Re: What's the secret to installing Java in a fat client image?
I've been able to install to my fat clients using the webupd8 ppas. (I actually have to install both java6 and java7 because of some software projects my students are working on.) There weren't any gotchas I came across when I did the install, but that may have just been dumb luck. I'll try to check this from school tomorrow and see if I can provide any help. Todd On Tue, Oct 8, 2013 at 7:59 PM, Jim Christiansen jim.c.christian...@gmail.com wrote: I'm at home writing this and the server is at school but I've been unsuccessful in getting java- any java- openjdk or webup8 to install. I get error messages that a dir isn't mounting and logs can't be written to or dependency troubles with ca-certificates. I'll post the actual errors tomorrow. Thanks. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: What's the secret to installing Java in a fat client image?
Oh! That could be it. I generally start my chroot with: $ sudo ltsp-chroot -m -p so that everything gets mounted and the server's package repo gets used. (Which means it's probably a good idea to install the version(s) of Java you want on the server first. Unless there's a 32-/64-bit issue.) On Tue, Oct 8, 2013 at 9:18 PM, theluketaylor ekul.tay...@gmail.com wrote: Did you mount items like /dev? Certain packages with post install scripts can need that. Most packages don't fail as a result but I wouldn't be surprised java would complain since it's likely trying to create some certs or something and can't read from /dev/random mount --bind /dev /opt/ltsp/i386/dev mount -t proc none /opt/ltsp/i386/proc mount -t sysfs none /opt/ltsp/i386/sys On Tue, Oct 8, 2013 at 9:05 PM, Todd O'Bryan toddobr...@gmail.com wrote: I've been able to install to my fat clients using the webupd8 ppas. (I actually have to install both java6 and java7 because of some software projects my students are working on.) There weren't any gotchas I came across when I did the install, but that may have just been dumb luck. I'll try to check this from school tomorrow and see if I can provide any help. Todd On Tue, Oct 8, 2013 at 7:59 PM, Jim Christiansen jim.c.christian...@gmail.com wrote: I'm at home writing this and the server is at school but I've been unsuccessful in getting java- any java- openjdk or webup8 to install. I get error messages that a dir isn't mounting and logs can't be written to or dependency troubles with ca-certificates. I'll post the actual errors tomorrow. Thanks. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Locked-down browser for online testing on Linux?
Sorry for cross-posting, but I know some people are only on one list... Does anyone know of a way to lock down a browser in Linux for online testing? Ideally, I'm imagining a plug-in or something that, when it accesses a testing site, would make the browser full screen, not allow the user to open new tabs or windows, and would keep the user from switching to other applications during the time that the test is going on. Once the test is submitted, the browser would return to normal. (There would probably also need to be a Cancel or Abort or Quit Now button, that would submit an incomplete test and return control to the user.) I realize you'd have to do some extra stuff outside the browser to prevent savvy users from disabling such a plug-in, but the last time I checked, the only Lockdown browser available was a commercial product for Windows. Given the proliferation of online courses, online tests, and the move by many states to do high-stakes testing online, I'm thinking there must be someone working in this area. In fact, creating a bootable CD or USB that had just the testing environment on it might be a good way to ensure that students can't use anything else while they're testing. Anybody know of any development in this direction? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Switching to Kubuntu; problems?
I hate Unity. Sorry, but there you have it. Having to dig around to find programs, not being able to put applets on panels...it's just too much change! :-) Anyway, I think I'm going to switch to Kubuntu for my lab. I should be completely to fat clients within a couple of months, but I was wondering if there are any gotchas I should be aware of. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Switching to Kubuntu; problems?
That's the problem. Fallback is clearly something that's trying to ease the transition to Unity, but I really, really, really don't want to transition to Unity. Rather than hoping that I get to keep falling back with each new upgrade, I figure I might as well bite the bullet and switch to a desktop manager that I'm tracking the newest version of, rather than staying with one that's moving away from me and hoping they don't take it away. Todd On Sun, Oct 23, 2011 at 12:32 PM, Robert Curriden rcurri...@gmail.com wrote: Let's all be honest. Fallback is not Classic; I'm hoping that 12.04 has more common sense, and maintains the Classic desktop. On Sun, 2011-10-23 at 19:11 +0300, Alkis Georgopoulos wrote: Στις 23-10-2011, ημέρα Κυρ, και ώρα 12:02 -0400, ο/η Todd O'Bryan έγραψε: I hate Unity. Sorry, but there you have it. Having to dig around to find programs, not being able to put applets on panels...it's just too much change! :-) Anyway, I think I'm going to switch to Kubuntu for my lab. I should be completely to fat clients within a couple of months, but I was wondering if there are any gotchas I should be aware of. Todd http://www.liberiangeek.net/2011/08/return-to-ubuntu-classic-desktop-in-ubuntu-11-10/ -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
checking out equipment
Hey all, The journalism department at my school needs a way to keep track of digital cameras, microphones, video cameras, etc., and asked if I had any ideas. A library circulation program is probably more than they need, but they would like to be able to barcode equipment and scan student ids when they check stuff out. Does anyone have a suggestion for a program that might be appropriate? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Sabayon errors when I try tweaking Google Chrome
I ended up setting up a new user, logging into that user, setting everything the way I wanted it to be, and then copying that home folder into /etc/skel. It seems to work okay, except that I have to figure out how to mount a Resources folder I set up on the server on the fat clients. Hopefully, I'll figure that out this weekend. It also seems that students can't change their passwords through LDAP, even though I think I activated pam_passwd and pam_ldap (or the actual packages those are close to the right names for). Again, a weekend project. Todd On Wed, Sep 7, 2011 at 12:18 PM, David Groos djgr...@gmail.com wrote: Hi Todd, sigh... Managing students' computer-choices on classroom computers is, I think, currently the biggest un-met need of teachers using Edubuntu. Back when Hardy/Jaunty was coming out, sbalneav and others worked very hard to bring sabayon up to working and it did work very well in Jaunty. It was GREAT! When I upgraded to Lucid I found that it didn't work and sbalneav was no longer working with Edubuntu so I stopped using it. As explained by Jordan M., the design of Sabayon is inherently complex and difficult to maintain. Then, Edubuntu Menu Editor came around thanks to many, especially Marc G. at Revolution Linux, effort. I wasn't able to get it to work but I think that I didn't try hard enough as Marc is right there to help as needed to make it work. I'm not sure of it's current status but I would recommend giving it a try especially because of Marc's support. Check here: https://wiki.ubuntu.com/Edubuntu/Documentation/Edubuntu-menueditor for more info. I always encourage people to join and post to all 3 lists because each list has specific and not always overlapping expertise, thus also include: edubuntu-de...@lists.ubuntu.com, ubuntu-educat...@lists.ubuntu.com. So, might want to post to more lists to get a wider audience. To manage classroom computers I tried iTALC for many many years (well, 2.5 years but it seems more) with little satisfaction and then sch-scripts, a series of scripts that do much of what iTALC does, reliably and more responsively. Sch-scripts is pretty much in beta mode if you aren't a Greek school for which they were designed, but they work well enough for me at this time. I'll be interested to hear how you end up addressing this need--please post your experiences to the list. I too will probably be trying to set up edubuntu menu editor soon, as well. Will share what I find out. David G On Mon, Sep 5, 2011 at 9:03 AM, Todd O'Bryan toddobr...@gmail.com wrote: When I try saving a profile after doing some tweaks to Google Chrome, I get the A fatal error has occurred. You can help us fix the problem by sending the log in /etc/sabayon/sabayon-debug-log.conf to http://bugzilla.gnome.org error message. Unfortunately, there is no such file. In fact, there's just a profiles directory in /etc/sabayon. Any ideas how I might debug this or anyone have suggestions about how to customize users' experiences without Sabayon? Thanks! Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Sabayon errors when I try tweaking Google Chrome
When I try saving a profile after doing some tweaks to Google Chrome, I get the A fatal error has occurred. You can help us fix the problem by sending the log in /etc/sabayon/sabayon-debug-log.conf to http://bugzilla.gnome.org error message. Unfortunately, there is no such file. In fact, there's just a profiles directory in /etc/sabayon. Any ideas how I might debug this or anyone have suggestions about how to customize users' experiences without Sabayon? Thanks! Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: how to set PATH in fat client?
Could any of the developers comment on this or is there a better place to ask? On Mon, Jul 11, 2011 at 10:38 AM, Todd O'Bryan toddobr...@gmail.com wrote: I've tried setting the PATH variable in my fat client chroot in both /etc/environment and /etc/profile, but neither of them seem to do anything. Because I teach programming, students need to run commands in the terminal. Any idea how to do this, or why the fat client doesn't pay attention to /etc/environment or /etc/profile when users log in? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
how to set PATH in fat client?
I've tried setting the PATH variable in my fat client chroot in both /etc/environment and /etc/profile, but neither of them seem to do anything. Because I teach programming, students need to run commands in the terminal. Any idea how to do this, or why the fat client doesn't pay attention to /etc/environment or /etc/profile when users log in? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Planning for summer work/next school year
I'm using fat clients with 10.04 and it's fairly painless, even with a lab that's split between fat and thin. I'm going to try upgrading to 11.04 after school gets out (on Thursday, yikes!), but I've been very pleased with how easy it is to add new packages, upgrade, etc. (I do wish there were fewer steps, but I suppose I could write a script to help with that.) I can't remember what I did to get LDAP to work on the fat clients--I think it was enough to get LDAP working on the server, because the fat clients log in through the server, then become independent machines, but I can't remember at this point. I'm going to be in and out of my lab working on a project all summer, so I'd be happy to help out. I actually use a vanilla Ubuntu distro with LTSP, rather than Edubuntu, but it feels as if Edubuntu has become more a theme and set of packages than a separate distro. Let me know what I can do to help! Todd On Mon, May 30, 2011 at 6:21 PM, David Groos djgr...@gmail.com wrote: Hi Edubuntistas, School year here in Minnesota is winding down, I'll take a bit of break, then will be back to preparing the technology for the next school year. I've had great success with 10.04 with localapps. Next year I want to move to Fat Clients. I'm guessing I'm not alone in this. My BIG QUESTION is, which Edubuntu should I use: 10.04, 10.10 or 11.4? I've seen some passing comments on irc about this and some mention in this list-serve, but nothing comprehensive. Some specific considerations include: LTSP 5/Fat Client ease of use/setup Compatibility with SmartBoard Effectiveness of Video Codecs LDAP integration User management (like, users and groups) Permissions management (like, Sabayon) Internet Proxy/Site white/black-listing Client management (like sch-scripts or iTALC) Jonathan--wouldn't a comparison table like they do on wikipedia, be useful for something like this? It would look nice on edubuntu.org ;) Actually, what I'll do is take notes from this discussion and put it on a public googledoc since, with its wysiwyg editing it's easy to make and share. David -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: configure some clients to boot from fat image
Modify /etc/ltsp/dhcpd.conf so that, based on the MAC addresses of the clients, they load the image at /opt/ltsp-fat rather than the one at /opt/ltsp. If you need more info, I can look at my settings file at school, but they've blocked my home email, so send me a reminder at Todd dot OBryan at jefferson dot kyschools dot us and I can tell you exactly what to put in there. Todd On Tue, Mar 22, 2011 at 1:45 PM, Lee Harr miss...@hotmail.com wrote: Hi; I have a lab of computers running plain LTSP with thin clients. Some of the clients are more powerful LTSP Term 1620s which I thought I would try out as fat clients. They work pretty well as thins. Would you expect them to work any better as fat clients? I built the fat client image with these instructions: https://help.ubuntu.com/community/UbuntuLTSP/FatClients But I'm not sure how to have just those more powerful systems boot from the new image. (I don't want to move the fat image to /opt/ltsp, I want to leave it at /opt/ltsp-fat) So, am I modifying /etc/ltsp/dhcpd.conf ? Or is it something in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/ ? Any hints appreciated. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: CUPS won't start on fat client
Well, I figured it out. Even though it's a fat client, it seems the way to make it work was to follow this how-to: https://help.ubuntu.com/community/UbuntuLTSP/LocalAppsLucidPrinting The fat client is connecting as a client to the server and printing from there, rather than printing on its own, but at least it can print. Todd On Thu, Mar 10, 2011 at 6:46 PM, Todd O'Bryan toddobr...@gmail.com wrote: I was able to get root access by doing $ sudo chroot /opt/ltsp/amd64 passwd -u root $ sudo chroot /opt/ltsp/amd64 passwd and setting the password. As I guessed, cups isn't starting. In fact, when I look in the rc.d directories, all mentions of cups are K50cups files, meaning that cups is getting killed, rather than started. Once I start cups manually, using the root account on the client, then login in as a normal user, everything works fine. There's something funky about trying to install cups in a chroot. Because the installation script tries to run the cups server as part of installing, and fails because it's in a chroot, the cups daemon doesn't get set up to start on boot. Any ideas? Todd On Fri, Mar 4, 2011 at 6:48 PM, David Groos djgr...@gmail.com wrote: Hey Todd, not sure if this will help, but if you go to the /var/lib/tftpboot/ltsp/your.fat.image/lts.conf file and type: SCREEN_02=shell SCREEN_07=ldm (without the bullets, and maybe with a restart of your client). Then, when you reboot and are sitting at a client you hit F2 and you will be brought into maybe it's called, console but I think of it as terminal but on the local client, not on the server. Of course you can do any change on the client, remove this and that or whatever, and upon reboot you get a fresh system without your modifications. Anyway, hope this works on fat clients, not just thin clients--I'm still trying to figure out fat clients. Anyone? David On Mar 4, 2011, at 12:16 PM, Todd O'Bryan wrote: I can't get CUPS to start on a fat client. This is more complicated, because I can't sudo to check anything, because once the user logs in on the fat client, it doesn't use the server's user database anymore. So, two questions: 1. Does anyone know if CUPS not starting on an AMD64 LTSP fat client running 10.04 is a known problem with a known solution. (This is regular Ubuntu LTSP, not Edubuntu, but the LTSP part makes this list a lot more useful, I think.) 2. How do I get sudo access on the client? Thanks muchly, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: HOW TO
You'll want to download the Ubuntu install CD and install it beside your Windows XP on the same hard drive. You will then be able to dual-boot. When you start the computer, it will let you choose either Ubuntu or Windows XP. http://www.ubuntu.com/desktop/get-ubuntu/download Welcome to the community! On Sat, Mar 12, 2011 at 8:28 PM, hutama dibya romo...@yahoo.com wrote: Dear all, I am new to Ubuntu. I want to use dual OS, Ubuntu and XP, with Ubuntu as the main OS and XP as the second. Could you tell me how to install these OS. What Program I need to down load and from where. I usually work with Ms Office like Word, excell, Power point and some video sound editting, which I used to teach the students. Thank you very much for your kind attention and help. Best Regards, Dibya Hutama -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: CUPS won't start on fat client
I was able to get root access by doing $ sudo chroot /opt/ltsp/amd64 passwd -u root $ sudo chroot /opt/ltsp/amd64 passwd and setting the password. As I guessed, cups isn't starting. In fact, when I look in the rc.d directories, all mentions of cups are K50cups files, meaning that cups is getting killed, rather than started. Once I start cups manually, using the root account on the client, then login in as a normal user, everything works fine. There's something funky about trying to install cups in a chroot. Because the installation script tries to run the cups server as part of installing, and fails because it's in a chroot, the cups daemon doesn't get set up to start on boot. Any ideas? Todd On Fri, Mar 4, 2011 at 6:48 PM, David Groos djgr...@gmail.com wrote: Hey Todd, not sure if this will help, but if you go to the /var/lib/tftpboot/ltsp/your.fat.image/lts.conf file and type: SCREEN_02=shell SCREEN_07=ldm (without the bullets, and maybe with a restart of your client). Then, when you reboot and are sitting at a client you hit F2 and you will be brought into maybe it's called, console but I think of it as terminal but on the local client, not on the server. Of course you can do any change on the client, remove this and that or whatever, and upon reboot you get a fresh system without your modifications. Anyway, hope this works on fat clients, not just thin clients--I'm still trying to figure out fat clients. Anyone? David On Mar 4, 2011, at 12:16 PM, Todd O'Bryan wrote: I can't get CUPS to start on a fat client. This is more complicated, because I can't sudo to check anything, because once the user logs in on the fat client, it doesn't use the server's user database anymore. So, two questions: 1. Does anyone know if CUPS not starting on an AMD64 LTSP fat client running 10.04 is a known problem with a known solution. (This is regular Ubuntu LTSP, not Edubuntu, but the LTSP part makes this list a lot more useful, I think.) 2. How do I get sudo access on the client? Thanks muchly, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
CUPS won't start on fat client
I can't get CUPS to start on a fat client. This is more complicated, because I can't sudo to check anything, because once the user logs in on the fat client, it doesn't use the server's user database anymore. So, two questions: 1. Does anyone know if CUPS not starting on an AMD64 LTSP fat client running 10.04 is a known problem with a known solution. (This is regular Ubuntu LTSP, not Edubuntu, but the LTSP part makes this list a lot more useful, I think.) 2. How do I get sudo access on the client? Thanks muchly, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Easy way to disable screen lock? (Was: Profile management (Edubuntu 10.10))
This worked like a charm. I've added it to the Community Docs page. On Sat, Feb 5, 2011 at 9:11 PM, Todd O'Bryan toddobr...@gmail.com wrote: Thanks very much! I'll run this first thing Monday morning. On Sat, Feb 5, 2011 at 8:32 PM, Marc Gariépy gariepy.m...@gmail.com wrote: Hello Todd, For thin client you can disable lock screen using the following command: sudo gconftool-2 --direct --config-source \ xml:readwrite:/etc/gconf/gconf.xml.mandatory --set --type \ boolean /desktop/gnome/lockdown/disable_lock_screen True \ /apps/panel/global/disable_lock_screen True This will disable the lock screen for every users as a mandatory setting so they won't be able to re-activate it. Marc On Sat, 2011-02-05 at 15:33 -0500, Todd O'Bryan wrote: My biggest grief is the number of times I have to slay student accounts when students have left the lab but forgotten to log out. Is there an easy way to turn that off for accounts that are logged on through thin clients, or do I have to go through the whole profile management system? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Easy way to disable screen lock? (Was: Profile management (Edubuntu 10.10))
My biggest grief is the number of times I have to slay student accounts when students have left the lab but forgotten to log out. Is there an easy way to turn that off for accounts that are logged on through thin clients, or do I have to go through the whole profile management system? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Easy way to disable screen lock? (Was: Profile management (Edubuntu 10.10))
Thanks very much! I'll run this first thing Monday morning. On Sat, Feb 5, 2011 at 8:32 PM, Marc Gariépy gariepy.m...@gmail.com wrote: Hello Todd, For thin client you can disable lock screen using the following command: sudo gconftool-2 --direct --config-source \ xml:readwrite:/etc/gconf/gconf.xml.mandatory --set --type \ boolean /desktop/gnome/lockdown/disable_lock_screen True \ /apps/panel/global/disable_lock_screen True This will disable the lock screen for every users as a mandatory setting so they won't be able to re-activate it. Marc On Sat, 2011-02-05 at 15:33 -0500, Todd O'Bryan wrote: My biggest grief is the number of times I have to slay student accounts when students have left the lab but forgotten to log out. Is there an easy way to turn that off for accounts that are logged on through thin clients, or do I have to go through the whole profile management system? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Nice case for building a fat client
So far one. I placed an order for 12 more back at the beginning of December, but my district didn't manage to get it to the vendor until after Christmas, at which point they were sold out of the motherboard and we had to start the process again. (sigh) I'm using the same server to support the fat client as my thirty thin clients, and everything seems to work fine. Todd On Tue, Jan 11, 2011 at 5:54 PM, David Van Assche dvanass...@gmail.com wrote: Yeah, the biggest cos these days seem to be monitors :-) which I suppose can be gotten second hand relatively easily. How's your setup holding up? How many fatclients are you running concurently? kind regards, David Van Assche On Tue, Dec 28, 2010 at 4:58 AM, Todd O'Bryan toddobr...@gmail.com wrote: I've actually had the thing running and my students can't wait until we get more. The difference in speed between this and a thin client is beyond noticeable. Here are the parts I used: Foxconn A74ML-K 3.0 Socket AM3/ AMD 740G/ AVGbE/ MATX Motherboard MB-A74MLK3 $43.99 Evercase E0526-S15 150W Mini-ITX Case (Black) CA-0526S15 $45.90 $45.90 AMD Athlon II X2 Processor 250 (3.0 GHz) AM3, Retail ADX250OCBX $62.99 $62.99 Super Talent DDR3-1333 2GB Original Memory D32G1333SP $18.98 $18.98 Sub Total $171.86 I ordered from SuperBiiz, but you could probably get similar pricing from NewEgg or TigerDirect. Last I checked, those two didn't carry the case, however, and the case is a really nice, small case for a client. With a micro-ATX mobo, there's only room for a slim optical drive and a 2.5 inch hard drive, so if you're not using either of those, you're not wasting a lot of room. Also, there's a vent just over the location of the CPU, so the CPU fan blows right out of the case. Since there's no case fan, that's a pretty good thing. There are still a couple of things I'm not sure about with using a fat client with Ubuntu LTSP. I changed /etc/environment, but it doesn't seem to show up when people log in, and I did have to create a way for network traffic to get forwarded, but other than that, the set-up is very nice. It's not super low power, but the CPU is about 65 watts and the motherboard doesn't use much more. Obviously, you could get a nice thin client that uses much less power, but I don't think it would be as fast, and it might not be much smaller. Todd On Tue, Nov 23, 2010 at 10:45 PM, Todd O'Bryan toddobr...@gmail.com wrote: I just got one of these cases. A MicroATX motherboard fits into it very snugly, but it's a very nice overall size: http://www.superbiiz.com/detail.php?name=CA-0526S15title=Evercase-E0526-S15-150W-Mini-ITX-Case-Black The power supply is above part of the motherboard, so you might want to try your parts before buying a bunch, but if you want something that's not much bigger than a typical thin client, I think this fits the bill. Add an inexpensive mobo, a CPU, and RAM, and it's all less than $200 for a pretty powerful machine. I've been creating my fat-client image to try to get it running and will report back once everything is installed and working. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Nice case for building a fat client
I've actually had the thing running and my students can't wait until we get more. The difference in speed between this and a thin client is beyond noticeable. Here are the parts I used: Foxconn A74ML-K 3.0 Socket AM3/ AMD 740G/ AVGbE/ MATX Motherboard MB-A74MLK3 $43.99 Evercase E0526-S15 150W Mini-ITX Case (Black) CA-0526S15 $45.90 $45.90 AMD Athlon II X2 Processor 250 (3.0 GHz) AM3, RetailADX250OCBX $62.99 $62.99 Super Talent DDR3-1333 2GB Original Memory D32G1333SP $18.98 $18.98 Sub Total $171.86 I ordered from SuperBiiz, but you could probably get similar pricing from NewEgg or TigerDirect. Last I checked, those two didn't carry the case, however, and the case is a really nice, small case for a client. With a micro-ATX mobo, there's only room for a slim optical drive and a 2.5 inch hard drive, so if you're not using either of those, you're not wasting a lot of room. Also, there's a vent just over the location of the CPU, so the CPU fan blows right out of the case. Since there's no case fan, that's a pretty good thing. There are still a couple of things I'm not sure about with using a fat client with Ubuntu LTSP. I changed /etc/environment, but it doesn't seem to show up when people log in, and I did have to create a way for network traffic to get forwarded, but other than that, the set-up is very nice. It's not super low power, but the CPU is about 65 watts and the motherboard doesn't use much more. Obviously, you could get a nice thin client that uses much less power, but I don't think it would be as fast, and it might not be much smaller. Todd On Tue, Nov 23, 2010 at 10:45 PM, Todd O'Bryan toddobr...@gmail.com wrote: I just got one of these cases. A MicroATX motherboard fits into it very snugly, but it's a very nice overall size: http://www.superbiiz.com/detail.php?name=CA-0526S15title=Evercase-E0526-S15-150W-Mini-ITX-Case-Black The power supply is above part of the motherboard, so you might want to try your parts before buying a bunch, but if you want something that's not much bigger than a typical thin client, I think this fits the bill. Add an inexpensive mobo, a CPU, and RAM, and it's all less than $200 for a pretty powerful machine. I've been creating my fat-client image to try to get it running and will report back once everything is installed and working. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
/etc/environment weirdness on fat client
I now have a fat client that cost $190 to build running on the same network as all my thin clients and it is blazingly fast. My students can't wait for more to come in. I teach computer programming, so I've had to install a couple of things that aren't in the package system, and it's a little tricky to get installed .desktop files to show up. (For example, if you install Chrome, it doesn't show up.) Running $ /usr/share/gnome-menus/update-gnome-menus-cache /usr/share/applications desktop.en_US.utf8.cache fixed the problem. Obviously, use a different locale if you don't speak US English. Anyway, on to the problem... I have set a couple of additions to the PATH variable in /opt/ltsp/amd64/etc/environment file, but when a user logs in, they don't show up when s/he does $ echo $PATH in the terminal. Any idea where the PATH might be getting overridden or why the system doesn't pick up the /etc/environment file from the client's image? Thanks, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: DRBL and Technology
OK, still trying to clarify this... I create a fat-client chroot that has a bunch of stuff in it. In particular, in my lab I teach programming, so I've got a few programming languages installed, Google Chrome, etc. Then I run ltsp-update-kernels, ltsp-update-image, and ltsp-update-sshkeys, just to make sure everything got updated. Now, does the fat-client download *everything* in the chroot into RAM, or does it mount the chroot remotely and only download what it needs to boot, loading the other stuff from (the server's) disk as it needs it? I guess what I'm asking is, is the part that the client gets over the network to boot considerably more for a fat-client than a thin-client, or is it about the same, with the fat-client then mounting the files it needs on the server? Todd On Mon, Nov 15, 2010 at 5:51 PM, Jonathan Carter (highvoltage) jonat...@ubuntu.com wrote: Hi Todd On 10-11-15 05:22 PM, Todd O'Bryan wrote: What if the thin clients are i386 and the fat clients are amd64? You'll have to have separate i386 and amd64 chroots. Typically though, i386 images are used for both. Also, I guess I'm not understanding something about how the chroot works. Do I not install the packages I want to run locally in the chroot for the fat clients? If so, does the fat client just know to download the binary the first time something is run so that it runs on the local machine instead of the server? Yep, you'll need to install them in the chroot. You could then run them by doing ltsp-localapps appname to run it locally. You can also specify which applications you want to run locally in lts.conf, and the user menus will then be modified to run those programs with ltsp-localapps. -Jonathan -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Nice case for building a fat client
I just got one of these cases. A MicroATX motherboard fits into it very snugly, but it's a very nice overall size: http://www.superbiiz.com/detail.php?name=CA-0526S15title=Evercase-E0526-S15-150W-Mini-ITX-Case-Black The power supply is above part of the motherboard, so you might want to try your parts before buying a bunch, but if you want something that's not much bigger than a typical thin client, I think this fits the bill. Add an inexpensive mobo, a CPU, and RAM, and it's all less than $200 for a pretty powerful machine. I've been creating my fat-client image to try to get it running and will report back once everything is installed and working. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Life after LTSP
fat-clients should work better with less network connectivity, once they've downloaded the image. They don't need to send video back and forth over the network constantly. (At least, I think that's right...) Todd On Tue, Nov 16, 2010 at 11:52 AM, Jim Christiansen jim.c.christian...@gmail.com wrote: Thanks Asmo, I'm not running ltsp-fat lients or local apps. We will be trying this out, too, very soon now. Thanks for the links you sent out about setting up fat clients and ltsp. We can't afford gig switches in our school. Do you know how well fat clients will work with 100 megabit switches? Jim -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: DRBL and Technology
I hadn't realized how nice the support for fat clients was in LTSP until I looked at the docs. Especially in a mixed thin/fat environment (where you're buying machines to replace thin clients over time), it seems like this might be the way to go. The one thing I didn't see right off was how to tell each client, based on MAC address I assume, which image to load--either thin or fat. I assume you do that in the lts.conf file. Todd On Mon, Nov 15, 2010 at 6:05 AM, Oliver Grawert o...@ubuntu.com wrote: hi, Am Sonntag, den 14.11.2010, 19:23 -0500 schrieb Jonathan Carter (highvoltage): I looked at the DRBL docs, and couldn't see anything it provides that ltsp fat clients doesn't already do. Could you elaborate on why you believe that it's a no-brainer? last time i looked at DRBL (which is admittedly several years ago) it was built in a way that massively modifies config files, adds scripts that unconditionally change system setup in a way that the package system isnt aware and broken existing setups without checks etc. in that state it wasnt integrateable at all in a distro. as i said, i dont know what changed within the last years, probably it got better nowadays but at my time as active LTSP developer it seemed more sane and less work to integrate fat clients in a sensible way than trying to make the DRBL scripts and setup work in an unintrusive way. ciao oli -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Advice needed re: Best Thin Client for local apps
I built a small PC, but it's powerful enough to use with DRBL, not just thin clients. Here were the parts: http://www.amazon.com/XION-Desktop-Card-reader-Power-Supply/dp/B003THQS20/ref=sr_1_10?s=electronicsie=UTF8qid=1288911806sr=1-10 http://www.amazon.com/AMD-Athlon-II-255-3-1GHz/dp/B0035JKNDM/ref=sr_1_2?s=electronicsie=UTF8qid=1288911909sr=1-2 http://www.newegg.com/Product/Product.aspx?Item=N82E16820148352 http://www.newegg.com/Product/Product.aspx?Item=N82E16813186201 It seems to be pretty darned speedy, doesn't use a lot of power, and the case fan is fairly quiet. Once you add shipping, it's right around $200, and you have to put it together, but buying parts means you can get a lot of computer power fairly cheaply. I mean, throw a hard drive and optical drive in this thing and it's more powerful than the model my district buys and considerably cheaper. I wish someone made a cheap little case for people who didn't intend to put in hard drives and optical drives, but once you get to MicroATX, they leave enough room for a whole computer. Todd On Wed, Nov 3, 2010 at 12:35 PM, john lists.j...@gmail.com wrote: Hi all, We're getting ready to move to Ubuntu Lucid LTS primarily for local apps. However we'll need to replace our current generation of thin clients (ntavo 6020's). We're in the market for the best performing TC's we can find ideally for under 300.00. I've tested the eeebox pc with 1.6 ghz atom processor and 1 ghz ram. It seems to work well, but we've had complaints from other testers that it freezes on them. It also doesn't obey our local shutdown scripts. Also I believe it uses the system ram to drive the video display and I'd prefer to have dedicated memory for that. In short I'd be interested in finding a compact 2 core TC with 2 gigs ram with a well supported video card that didn't cannibalize system ram to run. I see Asus makes a dual core version of the eeebox (ASUS Eee Box EB1501-W0167 Intel Atom ) but the price is nearly 500.00. At that point we sort of lost the whole pricing rational for using thin clients. Any advice folks could share would be appreciated! Thanks! -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Help! 10.04 LTSP becomes very slow to load and operate.
On 10.04 I've noticed that gnome-panel often eats up tons of CPU, especially for people who aren't actually logged in. Slaying those users solves the problem, but students have to let me know it's happening. I haven't seen it happening in the last week or two, so I don't know if an update fixed the problem. Todd On Wed, Oct 27, 2010 at 2:39 PM, john lists.j...@gmail.com wrote: Hi David, Can you describe how older clients (or possibly just compaq clients) make things worse? Do you know why this might be. I have a number of older clients on the network and would be very interested to know if they are actually degrading the LTSP experience for more modern clients in some way. One thing I've noticed on any client you care to name is that it will often become diconnected from nbd somehow, and although it will continue to run, it will chatter frantically over the network to the server. Thanks! John On Tue, Oct 26, 2010 at 11:12 AM, David Hopkins dahopkins...@gmail.com wrote: Jim, Sounds very familiar to what I was experiencing ... check via top if dbus is using 100% of cpu in which case this could be the issue I saw with nofile defaulting 1024. (ps -u messagebus for the PID, then cat /proc/PID/limits to see what the current limits are) .. the load averages were low but the system was almost non-responsive. Also, if you are nfs mounting home directories, check the settings for wsize and rsize. I've found that 8192 works well with Ubuntu but my prior setting of 32768 caused all kinds of random issues due to slow file access. I also found that with older hardware (specifically older Compaq systems and systems with less than 128Mb memory) I could get one misbehaving client which would slow everything down tremendously. There was also an issue with flash and needed to set a couple of flags for plugin-container: http://kb.mozillazine.org/Plugin-container_and_out-of-process_plugins ... I just made the changes directly in firefox.js as that was most expedient. And ... I found that I also needed to delete a lot of the old config files for users when I migrated from K12LTSP based on RHEL4 to Ubuntu. Just my guesses ... Sincerely, Dave Hopkins On Tue, Oct 26, 2010 at 1:53 PM, Jim Christiansen jim.c.christian...@gmail.com wrote: I've been fighting a huge slow-down of our current 10.04 ltsp 34 client system. I'm not running local apps, the server has 8 gigs of ram and a 6 core processor. The cpu load is rarely over 30 or 40 % and swap is never used. One nic on the server attached to a 100 megabit unmanaged switch. The slowness comes unexpectedly and a restart may not improve the situation. The wierd part is if I fire up our old K12LTSP server things work normally as ever... Does anyone know how to diagnose this problem? I don't know if our network is saturated/maxed out, if the wiring has gone downhill and become problematic again, or if I have an internal server setup mistake. I'm on an internal 192.168.1 subnet and think I've edited the system files properly. Thanks, Jim -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: lucid unown user id LTSP user cant loggin
I've been trying to set up LDAP in my lab and it's a huge mess. There are several currently open LDAP bugs on Ubuntu and the fact that the default install doesn't include a way to create a database except completely manually is a huge pain. If I get everything up and working and reasonably well scripted, I'll post a link. (A former student who worked as a sysadmin at her college has been a huge amount of help as I've worked through this, but I think this is completely beyond the capabilities of most teachers without a great deal of technical training. I teach computer science and consider myself a competent programmer and I've almost given up in frustration more than once.) Todd On Sat, Aug 21, 2010 at 12:55 AM, Michael Rickmann mric...@gwdg.de wrote: Hi, I had seemingly the same issue one week ago, when upgrading an LTSP server from Hardy to Lucid. This server has to query a different machine via ldaps:// when a user wishes to log in. During update I kept the old /etc/pam.d files. I managed to work around the issue by installing the Name Service Cache Daemon nscd on the LTSP server. It had helped me on some fat clients before. Michael Am 20.08.2010 08:22, schrieb Mattias Hemmingsson: Hi Yes i had everthing working fine in ubuntu 8.04 But when i installed the new ubuntu 10.04 i cant logg in. The user can loggin with ssh but not throw the gdm. I onlyt get the unnown user error id. And i have tiried almost everything. Are you using ubuntu 10.04 ? // Matte - Ursprungligt meddelande - Från: David Hopkinsdahopkins...@gmail.com Till: Mattias Hemmingssonma...@elino.se, edubuntu-de...@lists.ubuntu.com, Edubuntu Users Listedubuntu-users@lists.ubuntu.com Skickat: fredag, 20 aug 2010 1:18:41 Ämne: Re: lucid unown user id LTSP user cant loggin On Thu, Aug 19, 2010 at 9:15 AM, Mattias Hemmingssonma...@elino.se wrote: Hi I have 4 ltsp server running lucid staddning. But non of my ldap users can loggin to the servers. The servers dump and unown user id and then sends the user back to loggin. I have done som search and it seams to be cousing by somthing called DRI. And I also find a buf saying that its not possible to turn dri off on the lts.conf file on lucid. And that you have to set upp your own xorg.con file. So i tried all this but still my users can logged in. Is there any one using lucid with ltsp ans ldap and that has an working solution for this problem? Matte, I also use LDAP (Openldap). Scott Balneaves wrote up a tutorial on how to get authentication working a while back. It can be found here: https://wiki.edubuntu.org/Edubuntu/WikiSite/SimpleLDAPSetup Follow the section for Client: install client pieces. For my systems, I added just the ldap-auth-client. I answered the questions. I changed the ldapi:/// to ldap://IP.x.y.z:389/ ... I also entered the correct info for the realm. I answered yes to the question about having root be able to change passwords, and no for the authentication required to access the database. Next, I copied/pasted the example profile changing given on the above page, only I changed edubuntu to something appropriate for our school and saved it as ncs-ldap-config. I then invoked auth-client-config -a -p ncs Afterwards I was able to use ldap. I now have 7 servers all authenticating successfully following this approach. Many thanks to Scott for help with that wiki page. Sincerely, Dave Hopkins -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Cups 1.4.1.5 broken?
I've noticed CUPS recently not starting so that I have to $ sudo /etc/init.d/cups start to get printing to work, but that seems to be different from what you're experiencing. Todd On Thu, Jul 15, 2010 at 7:52 AM, David Hopkins dahopkins...@gmail.com wrote: I have the latest version of cups installed on Karmic 9.10. However, while cups shows all printers available, I cannot print from anywhere except the console (localhost). There is mention of a bug where adding ServerAlias * will correct the issue, but it does not work for me. I would appreciate any help in getting cups to work again. Sincerely, Dave Hopkins -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
How to fix RAID1 array
I have my student home folders on a RAID1 array. One of the hard drives seems to have become corrupted--I'm getting Buffer IO errors. Is the hard drive definitely bad so I should get a new one, or should I try reformatting it and seeing if it works again? Either way, how do I do that? Is there a way to run the partitioner part of the alternate install CD without running the whole installer? Will the RAID array automatically pick up the reformat of the current drive or a new drive if I have to get one? Anyone got a link to TFM that I should R before I attempt this? Thanks, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
still slow Java on thin clients
This is on Karmic... I had a single student working in my lab during my planning period and the Java program he was working on was unbearably slow on his single client. He moved to the server and it was plenty fast. Have we reintroduced the bug that got fixed in Jaunty with Java on remote X or is this a new one? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: How/why does network-manager interfere with /etc/resolve.conf
I think (and I may be completely wrong) that if you include the interface info in /etc/network/interfaces then network-manager leaves it alone and expects you to take care of it. Todd On Thu, Dec 3, 2009 at 7:52 PM, john lists.j...@gmail.com wrote: Hi all, One of my gripes over the last year or so is the increasing complexity and abstraction of Ubuntu as regards networking management. I used to be to be confident that I could control mac to logical interface mapping with iftab, or name resolution with /etc/resolv.conf, or assignments with /etc/network/interfaces. Lately it seems like everything is controlled by network-manager or dbus or some arcane mapping file that lives in some far-flung sub-directory. My current problem is trying to stop network-manager from over-writing my /etc/resolv.conf file when I start the server using bonding. I guess I don't understand how network-manager, dbus-subsystem, etc, etc, work with regards to networking. I feel like it's getting harder and harder to figure out who's in charge Can anyone point me in the right direction to learn more? Thanks! John -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
evince error with ltsp on Karmic
Anyone else having a problem using evince on Karmic thin clients? I didn't have time to get an error printout, but I had to install Xpdf to get students access to PDFs. Just wondered if it was only me. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenLDAP authentication
On Fri, Oct 30, 2009 at 3:57 AM, Asmo Koskinen asmo.koski...@arkki.info wrote: Todd O'Bryan kirjoitti: Finally, today, I was able to id and su to a user in the LDAP database who wasn't on the local machine. I'll write up my long, painful saga and post it somewhere. Apparently, 9.10 doesn't bother to install any kind of basic LDAP database when you install the packages, so someone will have to add new code to get what I did on 9.04 to work on 9.10. Well, I'll try fresh/latest/greatest stable one source package tonight. Official guide is for same version (20091028). ftp://ftp.openldap.org/pub/OpenLDAP/openldap-stable/openldap-stable-20091028.tgz OpenLDAP Software 2.4 Administrator's Guide The OpenLDAP Project http://www.openldap.org/ 28 October 2009 http://www.openldap.org/doc/admin24/ There is too much problems with Ubuntu's own package - an example: https://bugs.launchpad.net/ubuntu/+source/openldap/+bug/364531/comments/12 Best Regards Asmo Koskinen. I agree. It seems whoever is maintaining the slapd package has dropped the ball pretty spectacularly, both with documentation and install configuration. I tried last summer to learn enough about packaging that I could be helpful in situations like this, but I didn't get very far. And with school in session and me teaching six classes, I won't have time to learn something new until winter break. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
OpenLDAP authentication
Hey all,
I'm trying to set up LDAP authentication and I think I'm almost there.
Here's what I get querying for testuser
sysad...@server3:~$ ldapsearch -x uid=testuser
# extended LDIF
#
# LDAPv3
# base dc=dupontmanual,dc=org (default) with scope subtree
# filter: uid=testuser
# requesting: ALL
#
# testuser, Users, dupontmanual.org
dn: uid=testuser,ou=Users,dc=dupontmanual,dc=org
objectClass: account
objectClass: posixAccount
cn: testuser
uid: testuser
uidNumber: 10001
gidNumber: 10001
homeDirectory: /home/testuser
loginShell: /bin/sh
gecos: testuser
description: User account
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
As you can see, the user's password hash isn't visible. If I bind as
the ldap admin, I can see it:
sysad...@server3:~$ ldapsearch -x -D cn=admin,dc=dupontmanual,dc=org
-W uid=testuser
Enter LDAP Password:
# extended LDIF
#
# LDAPv3
# base dc=dupontmanual,dc=org (default) with scope subtree
# filter: uid=testuser
# requesting: ALL
#
# testuser, Users, dupontmanual.org
dn: uid=testuser,ou=Users,dc=dupontmanual,dc=org
objectClass: account
objectClass: posixAccount
cn: testuser
uid: testuser
uidNumber: 10001
gidNumber: 10001
homeDirectory: /home/testuser
loginShell: /bin/sh
gecos: testuser
description: User account
userPassword:: e1NTSEF9K1I4UmowRkRvVjFreXE5cDlLM1R3aTdtVEpPOWlodFk=
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
I've set up ldap-auth-config and libpam-ldap correctly, I think, so
that it queries the LDAP server when I ask for a user (it takes long
enough that I think it's contacting the server), but it can't find the
user.
sysad...@server3:~$ id testuser
id: testuser: No such user
I suspect my ACLs are wrong, but I think anonymous users should be
able to authenticate users. Here's the ACL stuff:
sysad...@server3:~$ ldapsearch -x -D cn=admin,cn=config -W -b
cn=config olcDatabase={1}hdb olcAccess
Enter LDAP Password:
# extended LDIF
#
# LDAPv3
# base cn=config with scope subtree
# filter: olcDatabase={1}hdb
# requesting: olcAccess
#
# {1}hdb, config
dn: olcDatabase={1}hdb,cn=config
olcAccess: {0}to attrs=userPassword,shadowLastChange by dn=cn=admin,dc=dupont
manual,dc=org write by anonymous auth by self write by * none
olcAccess: {1}to dn.base= by * read
olcAccess: {2}to * by dn=cn=admin,dc=dupontmanual,dc=org write by * read
# search result
search: 2
result: 0 Success
# numResponses: 2
# numEntries: 1
Can anyone see what's going wrong? Or does anyone know what command
PAM is running to try to id/auth the user so that I could run that
command myself and see what's going wrong?
Todd
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Re: OpenLDAP authentication
I looked through this, but it had some problems: 1. It doesn't use the cn=config style configuration within the LDAP database itself that they're pushing with OpenLDAP 2.4. 2. It says to use openssl to create the certificates, which I have been unable to get working with the latest version of openldap. I had to use GnuTLS's certtool instead. 3. It depends on webmin, which I'd prefer to avoid, if I can. I will happily write all this up when I get it working and can replicate it. (I need to use it on three servers, so I'll have to have instructions that work.) Todd On Thu, Oct 29, 2009 at 9:52 AM, Asmo Koskinen asmo.koski...@arkki.info wrote: Todd O'Bryan kirjoitti: I'm trying to set up LDAP authentication and I think I'm almost there. Can anyone see what's going wrong? Or does anyone know what command PAM is running to try to id/auth the user so that I could run that command myself and see what's going wrong? Have you seen this one? https://help.ubuntu.com/community/UbuntuLTSP/OpenLDAP_NFS_SSL I do not use this setup in any real server in production, but I know this howto works. Hope you find something useful. Best Regards Asmo Koskinen. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenLDAP authentication
Finally, today, I was able to id and su to a user in the LDAP database who wasn't on the local machine. I'll write up my long, painful saga and post it somewhere. Apparently, 9.10 doesn't bother to install any kind of basic LDAP database when you install the packages, so someone will have to add new code to get what I did on 9.04 to work on 9.10. Todd On Thu, Oct 29, 2009 at 4:16 PM, Asmo Koskinen asmo.koski...@arkki.info wrote: Todd O'Bryan kirjoitti: 1. It doesn't use the cn=config style configuration within the LDAP database itself that they're pushing with OpenLDAP 2.4. Yes, this is really changed from 8.04 to 9.10. http://doc.ubuntu.com/ubuntu/serverguide/C/openldap-server.html I'll try to figure out this new way. The old style slapd.conf(5) file is still supported, but must be converted to the new slapd-config(5) format to allow runtime changes to be saved. http://www.openldap.org/doc/admin24/slapdconf2.html Best Regards Asmo Koskinen. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Kerberos/LDAP Howto
Thanks. I'll try to go through it. I hadn't found your tutorial through the normal Googling. I guess the one issue with not using Kerberos is that you can query LDAP for the password hashes, which should ideally not be available to anybody. On the other hand, as you said, if I can get LDAP working for authorization and authentication, then I should be able to substitute Kerberos for the authentication part fairly easily. Todd On Fri, Sep 18, 2009 at 1:00 AM, Asmo Koskinen asmo.koski...@arkki.info wrote: Todd O'Bryan kirjoitti: Does anyone have a very step-by-step how-to that they can suggest that will get me from point A to point B with the least amount of pain? Have you seen this: https://help.ubuntu.com/community/UbuntuLTSP/OpenLDAP_NFS_SSL It uses SSL, not Kerberos. If you get openLDAP to work with that howto (SSL), you can turn Kerberos on later, I guess. Never try Kerberos by myself. Be very careful when dealing with PAM. ps. I wrote that, so I'm glad to hear how easy that howto is as a step-by-step howto. Best Regards Asmo Koskinen. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Help--update killed everything
SOLVED! It turns out my problem was already reported, but since I didn't know which video chipset my clients have, I didn't know what to search for. https://bugs.launchpad.net/ubuntu/+source/module-init-tools/+bug/208137 So, if your thin clients have VIA CLE266 chipsets--like the Devon IT NTAVO 6020P's--add vt8623fb to the blacklist as explained in the bug report. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Help--update killed everything
Well, before I do that, I got remote logging working and here's what I got: Dec 18 13:03:16 host12 kernel: [ 38.797326] scsi0 : pata_via Dec 18 13:03:16 host12 kernel: [ 38.809632] scsi1 : pata_via Dec 18 13:03:16 host12 kernel: [ 38.818906] ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xe000 irq 14 Dec 18 13:03:16 host12 kernel: [ 38.818927] ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xe008 irq 15 Dec 18 13:03:16 host12 kernel: [ 43.792574] VIA 82xx Audio :00:11.5: PCI INT C - Link[LNKC] - GSI 11 (level, low) - IRQ 11 Dec 18 13:03:16 host12 kernel: [ 43.792763] VIA 82xx Audio :00:11.5: setting latency timer to 64 Dec 18 13:03:16 host12 kernel: [ 50.118473] lp0: using parport0 (interrupt-driven). Dec 18 13:03:16 host12 kernel: [ 51.214019] nbd0: NBD_DISCONNECT Dec 18 13:03:16 host12 kernel: [ 51.215184] nbd0: Receive control failed (result -32) Dec 18 13:03:16 host12 kernel: [ 51.215341] nbd0: queue cleared Dec 18 13:03:21 200-202-server-1 ldminfod[27426]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:03:22 host12 kernel: [ 60.362721] NET: Registered protocol family 10 Dec 18 13:03:22 host12 kernel: [ 60.403926] lo: Disabled Privacy Extensions Dec 18 13:03:24 200-202-server-1 ldminfod[27441]: connect from 192.168.202.112 (192.168.202.112) The last line repeats, seemingly ad infinitum. Dec 18 13:11:35 200-202-server-1 ldminfod[470]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:35 200-202-server-1 ldminfod[473]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:35 200-202-server-1 ldminfod[478]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:36 200-202-server-1 ldminfod[482]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:36 200-202-server-1 ldminfod[485]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:37 200-202-server-1 ldminfod[488]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:37 200-202-server-1 ldminfod[493]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:38 200-202-server-1 ldminfod[503]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:38 200-202-server-1 ldminfod[507]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:38 200-202-server-1 ldminfod[510]: connect from 192.168.202.112 (192.168.202.112) Dec 18 13:11:39 200-202-server-1 ldminfod[516]: connect from 192.168.202.112 (192.168.202.112) Any ideas? Todd On Thu, Dec 18, 2008 at 9:16 AM, Todd O'Bryan toddobr...@gmail.com wrote: OK. Still not working. I think I'm going to try a fresh install of 8.10. My big hesitation in doing that is that I have LDAP and Kerberos authentication set up and restoring them scares me. I'll let you know how it goes. Todd On Wed, Dec 17, 2008 at 2:07 PM, Scott Balneaves sbaln...@legalaid.mb.cawrote: On Wed, Dec 17, 2008 at 12:46:17PM -0500, Todd O'Bryan wrote: OK. I just noticed something strange. When I try to update the chroot area, if I leave it with the default repos enabled, I get no updates. If I add deb http://us.archive.ubuntu.com/ubuntu intrepid-updates main restricted to get backports, it wants to install lilo and mbr, but I'm pretty sure I don't want those in a thin-client image. Is there something weird going on? Do I really want lilo and mbr? Should I remove them manually after they're installed? They don't hurt anything, and are just part of a standard install, so you can just ignore them. Scott -- Scott L. Balneaves | Life may have no meaning... or even worse, Systems Department | it may have a meaning of which I disapprove. Legal Aid Manitoba | -- Ashleigh Brilliant -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Help--update killed everything
Scratch that. I had ssh'ed to the wrong server. Which could explain why none of the changes I made did anything. :-/ On Wed, Dec 17, 2008 at 8:04 AM, Todd O'Bryan toddobr...@gmail.com wrote: Another piece of information. For some reason the update from 8.04 to 8.10 just deleted--completely--my lts.conf file in /var/lib/tftpboot/ltsp/i386. In fact, the tftpboot directory and everything below it got wiped out from /var/lib. I guess I'd call that a bug in the upgrade process. On Wed, Dec 17, 2008 at 7:33 AM, Todd O'Bryan toddobr...@gmail.comwrote: Sorry for the cross-post, but students are arriving in 15 mins and I'm desperate. I updated my two Ubuntu 8.04 servers with LTSP to 8.10 last night. Once they finished, I copied over my old LTSP images to /opt/ltsp-8.04 and ran ltsp-build-client from scratch to create a new image. Now, when I boot the clients, something very strange happens. I use Ctrl+Alt+F1 to follow the boot progress in the terminal. After displaying the Loading hardward drivers (which takes a while) message, the background flashes green. It gets to the Creating authfile...(something) message and then the monitor goes black. Not only that, whatever signal the client is sending to the monitor is so offensive that at this point, not even the monitor menu button on the front works. The clients are NTAVO 6020P's and the monitors are HP 1706's. Any ideas what could be going on? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Help--update killed everything
Sorry for the cross-post, but students are arriving in 15 mins and I'm desperate. I updated my two Ubuntu 8.04 servers with LTSP to 8.10 last night. Once they finished, I copied over my old LTSP images to /opt/ltsp-8.04 and ran ltsp-build-client from scratch to create a new image. Now, when I boot the clients, something very strange happens. I use Ctrl+Alt+F1 to follow the boot progress in the terminal. After displaying the Loading hardward drivers (which takes a while) message, the background flashes green. It gets to the Creating authfile...(something) message and then the monitor goes black. Not only that, whatever signal the client is sending to the monitor is so offensive that at this point, not even the monitor menu button on the front works. The clients are NTAVO 6020P's and the monitors are HP 1706's. Any ideas what could be going on? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Help--update killed everything
Another piece of information. For some reason the update from 8.04 to 8.10 just deleted--completely--my lts.conf file in /var/lib/tftpboot/ltsp/i386. In fact, the tftpboot directory and everything below it got wiped out from /var/lib. I guess I'd call that a bug in the upgrade process. On Wed, Dec 17, 2008 at 7:33 AM, Todd O'Bryan toddobr...@gmail.com wrote: Sorry for the cross-post, but students are arriving in 15 mins and I'm desperate. I updated my two Ubuntu 8.04 servers with LTSP to 8.10 last night. Once they finished, I copied over my old LTSP images to /opt/ltsp-8.04 and ran ltsp-build-client from scratch to create a new image. Now, when I boot the clients, something very strange happens. I use Ctrl+Alt+F1 to follow the boot progress in the terminal. After displaying the Loading hardward drivers (which takes a while) message, the background flashes green. It gets to the Creating authfile...(something) message and then the monitor goes black. Not only that, whatever signal the client is sending to the monitor is so offensive that at this point, not even the monitor menu button on the front works. The clients are NTAVO 6020P's and the monitors are HP 1706's. Any ideas what could be going on? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Java performance awful, any ideas?
OK. I tried the workaround and it did indeed fix my Java problems. Hopefully a fix will appear soon in the real update channel. On Fri, Nov 14, 2008 at 6:40 PM, Todd O'Bryan [EMAIL PROTECTED] wrote: Yeah. I just wondered if anyone knew what the XCB bug might be or whether the XCB devs were working on it. :-) On Fri, Nov 14, 2008 at 6:17 PM, Jordan Erickson [EMAIL PROTECTED] wrote: The main difference between these versions appears to be that the Hardy version links to /usr/lib/libxcb-xlib.so.0 and /usr/lib/libxcb.so.1, and the older version does not. I'm guessing it has to do with that. I *just* did the Gutsy file copy today at one school, and it seemed to fix the problem all together with no ill effects (knocks on wood). Cheers, Jordan/Lns Todd O'Bryan wrote: Does anyone have any idea what the bug might be and if it's still present in intrepid? I'll try the fix on Monday and see what happens... On Fri, Nov 14, 2008 at 10:05 AM, Kai Wollweber [EMAIL PROTECTED] wrote: Am Freitag, den 14.11.2008, 09:44 -0500 schrieb Todd O'Bryan: I'm trying to run BlueJ (http://www.bluej.org), a fairly modest Java IDE for students. It runs fine on the servers, on my Ubuntu laptop and desktop, but on the clients it's as slow as molasses. Rhere is already a bug report at launchpad about this issue: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/277069 I asked Juha in ltsp-discuss mailing-list and his answer gives us a workaround: - Kai Wollweber [EMAIL PROTECTED] kirjoitti: yesterday I recognized the problem of slow java applications on our ltsp clients. In our case the java program geonext is unuseable but importand for our school. I found your solution posted some weeks ago: The sluggishness of some Java applications can be solved in Ubuntu Hardy by replacing the /usr/lib32/libX11.so.6.2.0 file in Hardy with the version in Gutsy (presuming Firefox and Java are 32-bit versions, so they use 32-bit libraries). The main difference between these versions appears to be that the Hardy version links to /usr/lib/libxcb-xlib.so.0 and /usr/lib/libxcb.so.1, and the older version does not. Similar change may work as well with other LTSP distributions that are affected by this. 1.) How can a single file be replaced between different Ubuntu versions? Simply replacing the file (with cp) should be enough, but in case updates should happen to ia32-libs package that contains the /usr/lib32/libX11.so.6.2.0 file, those updates will overwrite the changed file. dpkg-divert can be used to solve this problem, it can be used to divert file updates to another place (in this case, because the file is a shared library, it should not be in the same directory, otherwise ldconfig will link to the wrong file). You might want to test by simply installing the gutsy version of ia32-libs package, it should work, but I don't recommend that as a permanent solution (it will change many other libraries as well). 2.) Where can I get the file from Gutsy? http://packages.ubuntu.com/gutsy-updates/amd64/ia32-libs/download You can unpack deb-archives with (IIRC): (mkdir tmp cd tmp ar x ../ia32-libs_2.1ubuntu4_amd64.deb \ tar -zxf data.tar.gz) You'll find the file there. 3.) Are there side effects that probably can affect the system? Perhaps, but I'm not aware of any. 4.) Am I right that the file needs to be replaced in the ltsp chroot? No, X-clients use this library, so it needs to be replaced in the ltsp server environment, NOT in the image that is served to terminals. I hope this helps. Juha -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- Jordan Erickson Owner, Logical Networking Solutions http://www.logicalnetworking.net 707-636-5678 Latest LNS Blogs - http://blogs.logicalnetworking.net Intel and HP team up to roll out Green PCs for the enterprise Mozilla Thunderbird Add-on Signature Switch Will Windows 7 be another Mojave Experiment? -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Java performance awful, any ideas?
Yeah. I just wondered if anyone knew what the XCB bug might be or whether the XCB devs were working on it. :-) On Fri, Nov 14, 2008 at 6:17 PM, Jordan Erickson [EMAIL PROTECTED] wrote: The main difference between these versions appears to be that the Hardy version links to /usr/lib/libxcb-xlib.so.0 and /usr/lib/libxcb.so.1, and the older version does not. I'm guessing it has to do with that. I *just* did the Gutsy file copy today at one school, and it seemed to fix the problem all together with no ill effects (knocks on wood). Cheers, Jordan/Lns Todd O'Bryan wrote: Does anyone have any idea what the bug might be and if it's still present in intrepid? I'll try the fix on Monday and see what happens... On Fri, Nov 14, 2008 at 10:05 AM, Kai Wollweber [EMAIL PROTECTED] wrote: Am Freitag, den 14.11.2008, 09:44 -0500 schrieb Todd O'Bryan: I'm trying to run BlueJ (http://www.bluej.org), a fairly modest Java IDE for students. It runs fine on the servers, on my Ubuntu laptop and desktop, but on the clients it's as slow as molasses. Rhere is already a bug report at launchpad about this issue: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/277069 I asked Juha in ltsp-discuss mailing-list and his answer gives us a workaround: - Kai Wollweber [EMAIL PROTECTED] kirjoitti: yesterday I recognized the problem of slow java applications on our ltsp clients. In our case the java program geonext is unuseable but importand for our school. I found your solution posted some weeks ago: The sluggishness of some Java applications can be solved in Ubuntu Hardy by replacing the /usr/lib32/libX11.so.6.2.0 file in Hardy with the version in Gutsy (presuming Firefox and Java are 32-bit versions, so they use 32-bit libraries). The main difference between these versions appears to be that the Hardy version links to /usr/lib/libxcb-xlib.so.0 and /usr/lib/libxcb.so.1, and the older version does not. Similar change may work as well with other LTSP distributions that are affected by this. 1.) How can a single file be replaced between different Ubuntu versions? Simply replacing the file (with cp) should be enough, but in case updates should happen to ia32-libs package that contains the /usr/lib32/libX11.so.6.2.0 file, those updates will overwrite the changed file. dpkg-divert can be used to solve this problem, it can be used to divert file updates to another place (in this case, because the file is a shared library, it should not be in the same directory, otherwise ldconfig will link to the wrong file). You might want to test by simply installing the gutsy version of ia32-libs package, it should work, but I don't recommend that as a permanent solution (it will change many other libraries as well). 2.) Where can I get the file from Gutsy? http://packages.ubuntu.com/gutsy-updates/amd64/ia32-libs/download You can unpack deb-archives with (IIRC): (mkdir tmp cd tmp ar x ../ia32-libs_2.1ubuntu4_amd64.deb \ tar -zxf data.tar.gz) You'll find the file there. 3.) Are there side effects that probably can affect the system? Perhaps, but I'm not aware of any. 4.) Am I right that the file needs to be replaced in the ltsp chroot? No, X-clients use this library, so it needs to be replaced in the ltsp server environment, NOT in the image that is served to terminals. I hope this helps. Juha -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- Jordan Erickson Owner, Logical Networking Solutions http://www.logicalnetworking.net 707-636-5678 Latest LNS Blogs - http://blogs.logicalnetworking.net Intel and HP team up to roll out Green PCs for the enterprise Mozilla Thunderbird Add-on Signature Switch Will Windows 7 be another Mojave Experiment? -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Set default session for thin clients on LTSP
I'm running Ubuntu 8.04 with the LTSP packages and would like to set Xfce as the default window manager. If my students click on Preferences-Select session-startxfce4, they can get Xfce, so all the packages are there and work, but I've been unsuccessful at making it the default session. Here's the information I've amassed thus far: 1. The correct lts.conf file I should be using is /var/lib/tftpboot/ltsp/i386/lts.conf (This doesn't actually exist on my server, so do I just create it from scratch?) 2. Setting [default] LDM_REMOTECMD = /usr/bin/startxfce4 should do what I want. Unfortunately, it doesn't. The tricky bit is that this information is cobbled together from multiple sources, so I'm not sure if I'm trying to use environment variables from one version with the lts.conf location of another version. I found the LTSP Documentation at http://www.ltsp.org/~sbalneav/LTSPManual.pdf but can't find LDM_REMOTECMD or anything else about setting a default session. Am I just missing it? Thanks, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: About Adding Amharic Phonts to edubuntu
You don't say which version of Linux you're using. (Ed)Ubuntu 8.04 (as well as previous versions, I imagine) has support for Amharic. Go to System-Administration-Language Support and click on Amharic. That will download the necessary fonts, dictionaries, etc. You'll need to be connected to the internet for that to work. I'm not sure how you enter Amharic, but there are probably help files available once you get the language support installed. If you need more help, feel free to write back. I have a Gurage friend who's a computer programmer who might be able to provide more insight. Hope that helps, Todd On Fri, Oct 24, 2008 at 1:32 AM, EYOB GIRMA [EMAIL PROTECTED] wrote: Dear sirs, I have come to understand that Edbuntu 6.10 supported an amharic phonetic(Ethiopian fonts) under its graphics application-Diagram Editor-input methods menu. I can clearly write amharic(Ethiopian Phonts) using this option. But i couldn't do that in the open office word processor or other open office applications. I was wondering if there is also any way to incorporate(associate) what EDBUNTU 6.10 supported in the graphics application(Amharic fonts) to open office applications.(I think it may be possible as it is already supported in the graphics part) Thanks Eyob -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: [K12OSN] devon IT 6020 ntavo
I think this happens occasionally with me, too. The client starts to boot and then stalls. Restarting solves the problem, so I think it's just a hiccup, but I haven't investigated to see what exactly is happening or why. Todd On Fri, Sep 19, 2008 at 11:50 AM, Luis Montes [EMAIL PROTECTED] wrote: I have 70 thin clients mostly disklessworkstation.com T150s, but a good 25 or so ntavo 6020s. Recently the 6020s decided to that they could get an IP address from the dhcp server but then timeout when trying to contact the tftp server. All of the T150s are booting fine. This is on a fully updated edubuntu 8.04 Any ideas? Thanks, Luis ___ K12OSN mailing list [EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/k12osn For more info see http://www.k12os.org -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: How to activate gnome-watchdog
They're Devon ITs, 6020P's, I think. With 512MB of memory, they seem to be doing great. Todd On Wed, Sep 17, 2008 at 2:53 PM, john [EMAIL PROTECTED] wrote: On Mon, Sep 15, 2008 at 2:13 PM, Todd O'Bryan [EMAIL PROTECTED] wrote: Thanks. I downloaded version 0.9.2 from Jordan's site and it seems to work with Hardy. 0.9 wasn't, but I didn't investigate exactly why. I'm just happy I don't have to slay students when their clients lock up anymore. I also relented and ordered 30 512MB chips and now students aren't getting lock-ups anymore. On the one hand, it's a shame I couldn't figure out how to get the 128MB clients working. On the other hand, I got them for about $16/client including shipping, so it didn't increase the cost of the clients by too much. Hey Todd, I was wondering what you were using for thin clients. We had the same issue with Devon IT 6030's and started ordering them with 512 MB ram installed instead of 128mb. The issue for us was that the thin clients use system ram to do video as well so you were really looking at 128 mb minus about 30 megs or so for X. With 512 MB they run pretty well, at least on 7.04 We do successfully run LTSP on clients with 128 mb ram, but those clients have video cards with some ram on-board. John -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Minimum client expectations, LTSP Triage
On Wed, Sep 10, 2008 at 1:22 PM, Scott Balneaves [EMAIL PROTECTED]wrote: However, I have a proposition. I have a whole whack of different thin clients at home, most I've bought, some I've had donated to me. I *don't* however, have a DevonIT unit, which seems to be a common sore point with people here. If someone would like to ship me one, I'd be happy to do some testing, and possible tweaking with it. Scott, Thanks for the offer! I only have 30 clients, but I don't have any classes with 30 kids this year, so I could send you one of my clients for you to play with for a while. I'd need to get it back after a few weeks--the school board gets annoyed if we try to give away stuff we've bought with public funds--but I'd be happy to pay for shipping there and back. Email me off-list with address info and I can probably stick it in the mail today or tomorrow. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Is it just me, or is LTSP a mess?
On Thu, Sep 11, 2008 at 6:37 AM, Oliver Grawert [EMAIL PROTECTED] wrote: hi, On Mi, 2008-09-10 at 09:37 -0700, Jordan Mantha wrote: The reality is that there has only ever been 1 person paid to work on Edubuntu/LTSP, and in fact that person has been moved to another project for his paid time and is now volunteering like the rest of us to work on Edubuntu. another thing i asked for as well in the 7.10 cycle (where i still could invest worktime into edubuntu) various times was to help testing *during the development cycle* at a time where i can fix bugs, my last request got me two new testers, mainly David van Asche and Asmo Koskinen ... you will notice that these two are the guys who apparently dont have any problems at all, both deploying huge setups of edubuntu with ltsp. with hardy our policies changed and i will be able to apply fixes even to the released version, that will give you the opportunity to help improving the LTS release to your requirement, all this needs is that developers get clear bugs, i will do what i can to help out here but please note that my time is very limted, beyond me there is Jordan Mantha around to help with educational apps and Scott Balneaves can help with the ltsp side of things, but what we need for that is a set of clear bugs to work on, ranting or blaming anyone for anything wont get us anywhere. That's great news. The big problem with LTSP is that many of us who use it do so precisely because we have no money, no dedicated tech staff, etc. I only have one setup and in addition to acting as a sysadmin for that lab of thirty clients, I'm supposed to be a full-time teacher of 150 students. I still have assignments from the second week of school, two weeks ago, that I haven't been able to return to students. I simply can't run stable releases and try out development versions as well. One of the things that I've noticed is that Asmo and David seem to have a number of custom fixes they've applied--for example, the environment variable fix that Asmo mentioned for Firefox 3 to avoid the pixmap issue. Clearly, if these are necessary, those changes need to be made available somehow, preferably in some kind of package that updates things that most LTSP users need. Otherwise the rest of us have problems because we don't have those fixes. I very much appreciate all the work that has gone into LTSP and Edubuntu. It has huge promise, but I have students who've spent the last four weeks using Linux, most for the first time, and they're all asking me why Linux sucks so much. That's not the way to convert students for a lifetime. I just have to hope that I can fix the problems and they'll forget how big a mess things were at the beginning of the year. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Is it just me, or is LTSP a mess?
On Wed, Sep 10, 2008 at 5:05 AM, David Van Assche [EMAIL PROTECTED]wrote: I've taken a look into the email in question, and can answer some questions. I in no way am affiliated with canonical, though I do work within the ed/ubuntu community. Firstly, Scott mentions not using 8.04, clearly you should upgrade as that will solve 50% of your issues... the other issues are all valid, and I guess the problem is one of communication between developers and end users. Lets address the issues seperately: - The gnome lingering process problem Agreed.. this is a heavy issue that is a pain in the behind, but it is not LTSP centric... the fault lies with gnome. Right now the workaround is a watchdog script, which seems to work ok, but is by no means a fix... This needs to be tackled from the gnome side... Right now the solution is in monitoring and ending misbehaving processes through the script or by hand via pkill -u or killall. It makes sense to clean all processes at least 1 time per day... consider it maintenance. I'm actually running the gnome-watchdog package that Philipp Hanselmann wrote. It's not working, he's never tested it on 8.04, so it's hardly his fault. I sent an email asking if I had to do something extra to make it start working and got no answer. Also, note that, useful as gnome-watchdog is, it's not in any of the official repos. Given that it's essential, someone official should have adopted it and pulled it into the repos. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Is it just me, or is LTSP a mess?
Because when students log back in after a freeze, their desktop appears without the top and bottom panels and they can't do anything until I slay them. On Wed, Sep 10, 2008 at 9:03 AM, David Van Assche [EMAIL PROTECTED]wrote: How do u know it is not working? can u paste some data? David Van Assche On Wed, Sep 10, 2008 at 1:26 PM, Todd O'Bryan [EMAIL PROTECTED] wrote: On Wed, Sep 10, 2008 at 5:05 AM, David Van Assche [EMAIL PROTECTED] wrote: I've taken a look into the email in question, and can answer some questions. I in no way am affiliated with canonical, though I do work within the ed/ubuntu community. Firstly, Scott mentions not using 8.04, clearly you should upgrade as that will solve 50% of your issues... the other issues are all valid, and I guess the problem is one of communication between developers and end users. Lets address the issues seperately: - The gnome lingering process problem Agreed.. this is a heavy issue that is a pain in the behind, but it is not LTSP centric... the fault lies with gnome. Right now the workaround is a watchdog script, which seems to work ok, but is by no means a fix... This needs to be tackled from the gnome side... Right now the solution is in monitoring and ending misbehaving processes through the script or by hand via pkill -u or killall. It makes sense to clean all processes at least 1 time per day... consider it maintenance. I'm actually running the gnome-watchdog package that Philipp Hanselmann wrote. It's not working, he's never tested it on 8.04, so it's hardly his fault. I sent an email asking if I had to do something extra to make it start working and got no answer. Also, note that, useful as gnome-watchdog is, it's not in any of the official repos. Given that it's essential, someone official should have adopted it and pulled it into the repos. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Is it just me, or is LTSP a mess?
OK, first let me say that I'm using the LTSP package on Ubuntu Hardy, not an Edubuntu install, so if that's the source of my problems, let me know and I'll install whatever I need to to get the Edubuntu goodies that I'm missing. My clients are Devon IT 6020P's--128 MB of RAM. Here's a recap of my last several classes. Students log in, try to work, and have hard freezes of the clients. I presume these freezes are the result of the pixmap caching problem that people have mentioned, and setting X_RAMPERC (or XRAMPERC, I've seen both spellings online) doesn't help at all. What's more, the problem occurs with OpenOffice and a programming environment I use, not just Firefox, so the Firefox 3 environment setting trick only solves some of my problems. What's more, whenever the client freezes, students can't log back in, so I spend a great deal of my time running sudo slay studentlogin instead of teaching. Am I doing something wrong, or are things far less stable than they should be? Todd O'Bryan duPont Manual High School Louisville, Kentucky P.S. I'm considering switching back to the K12LTSP package, just because it's so rock-solid, but I'd hate to give up the Ubuntu/Debian goodness I've come to rely on. The thing Eric Harrison managed to do is create all the settings and extra files to make LTSP work out of the box. The cool thing about Debian's packaging system is that you can change settings, add packages, and do all the other cool stuff that he does as part of installing a package. So if we can figure out how to get everything working, creating something that works out of the box should be doable. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: how do you kill a user's old processes when they try to log back on
Actually, Firefox v3 has been pretty wonky for other reasons. It's really slow and does weird things, even on my desktop machine, so I had considered uninstalling it and going back to v2. On the other hand, it looks like from Asmo's email that the change to avoid stressing thin clients isn't on by default, so I'll try setting that and see if it helps any. That doesn't solve the problem with OpenOffice, though, which does the same kind of pixmap caching, with the same disastrous results, so XRAMPERC is kind of necessary until we get OO worked out, too. Todd On Mon, Sep 1, 2008 at 6:09 AM, Gavin McCullagh [EMAIL PROTECTED]wrote: On Fri, 29 Aug 2008, Todd O'Bryan wrote: As a follow-on to this question, is the XRAMPERC variable that was available in Gutsy still available in Hardy? I added a setting to /var/lib/tftpboot/ltsp/i386/lts.conf, but users could still crash their terminals by going to a particularly graphics heavy website in Firefox. I'm not sure about XRAMPERC to be honest, but it's disappointing to hear firefox crashed a client as, if that's firefox v3, it should have the new code in it to reduce the stress it puts on the X server (which caused it to crash). Are you using firefox v3, yeah? Gavin -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: how do you kill a user's old processes when they try to log back on
As a follow-on to this question, is the XRAMPERC variable that was available in Gutsy still available in Hardy? I added a setting to /var/lib/tftpboot/ltsp/i386/lts.conf, but users could still crash their terminals by going to a particularly graphics heavy website in Firefox. Do I need to do anything special to make that setting take, other than rebooting the terminal? Thanks! Todd On Thu, Aug 28, 2008 at 12:30 PM, Todd O'Bryan [EMAIL PROTECTED] wrote: My students often manage to lock up the terminal, usually as a result of the pixmap bug in Firefox and OpenOffice that has been much discussed. When that happens, they have to power down and restart the client. But when they try to log back in, their login stalls, because their old processes are hanging around. Last year I stuck some command somewhere to automatically kill all running processes when a user logs on, but I can't remember what it was, where I put it, and I stupidly reinstalled over the old system without making a backup. Can anyone enlighten me? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
how do you kill a user's old processes when they try to log back on
My students often manage to lock up the terminal, usually as a result of the pixmap bug in Firefox and OpenOffice that has been much discussed. When that happens, they have to power down and restart the client. But when they try to log back in, their login stalls, because their old processes are hanging around. Last year I stuck some command somewhere to automatically kill all running processes when a user logs on, but I can't remember what it was, where I put it, and I stupidly reinstalled over the old system without making a backup. Can anyone enlighten me? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
LDAP/Kerberos help
Here's the setup I'm trying for. 2 servers for running applications a third server for home folders (mounted over NFS) and LDAP so the login information is centralized We've turned off ssh encryption in the lab and noticed a speed increase when the clients don't have to encrypt/decrypt traffic, but that makes us nervous about just using LDAP for authentication. Has anyone succeeded in setting up LDAP/Kerberos for a thin-client lab? If so, do you have a link to a good how-to or any gotchas we should be aware of? Thanks, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Consensus seems to be building Hardy Heron slow as molasses
My guess is that most of us don't have extra systems to run the beta releases on and can't afford to take the chance of having a system go down when there are 6 or 10 or 30 schoolchildren depending on it. If I could figure out a way to install a beta on my server and then reboot if there's a show-stopper bug, I'd do it, but my primary job isn't technical support--I'm a CS teacher using a self-contained lab and the lab administration happens during the free time I can find when I'm not planning for the six sections (three different classes, about 150 students) of classes I have to teach. Don't get me wrong, I'm more than happy to help out by trying pre-releases, but to make it more likely for that to happen, it has to be easier to run them on production systems. Maybe a good investment of time would be to create a simple way for people to create a dual-boot system that uses the current settings so that, for example, I could turn on the beta for a class or two to develop bug reports and then switch back. BTW, I haven't noticed that Hardy is slow at all on the two stand-alone machines I've installed it on. I'm hoping to put it on my system at school early next week. My only complaint is that Firefox 3 doesn't seem to be quite ready for prime-time, yet--the lack of some of my favorite extensions has made me downgrade to Firefox 2 on both machines I'm using. Todd On Sat, May 3, 2008 at 6:57 AM, Oliver Grawert [EMAIL PROTECTED] wrote: hi, Am Samstag, den 03.05.2008, 12:51 +0200 schrieb Oliver Grawert: so no, we wont go back, if theer are issues in ltsp5 lets fix them instead of going back to stoneage ;) indeed that needs testers to communicate to developers *before* a release. just to extend that sentence, there is a planned 8.04.1 release [1], we can do fixes for that if people report them in the bugtracker now ... ciao oli [1] https://wiki.ubuntu.com/HardyReleaseSchedule -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Stupid video question
If the video card in a thin-client could handle OpenGL or MPEG, would the server send video to the client in a way that would rely on the client's video card to render it, or would all the video still be figured out by the server and sent raw to the client? One of my students pointed out that he could build a machine from parts with a Quad Core CPU, 2GB of RAM, and a TB of hard drive space for under $800, and I just started looking. It's now possible to build a pretty cool thin client from parts for very little money. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Local devices vs. Gutsy
On Jan 8, 2008 5:41 PM, Richard Doyle [EMAIL PROTECTED] wrote: No replies, so I'll simplify my question: Has anyone gotten local devices to work on more than one client under 7.10? I'm using Ubuntu Desktop with the ltsp-server-standalone package installed and I sadly can't get them to work either. I thought maybe the problem was that I needed to update the ltsp image, but apparently I don't. If someone could please put a HowTo with very specific instructions somewhere for how to get this to work, I'm sure lots of us would appreciate it. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: ltsp-update-image
On Jan 8, 2008 4:14 AM, Oliver Grawert [EMAIL PROTECTED] wrote: hi, On Mo, 2008-01-07 at 20:19 -0500, Todd O'Bryan wrote: I'm getting an error about port 2000 already being set when I try to ltsp-update-image. My server is AMD64, but the clients are i386, so I ran does it actually say Error: ? Actually, it says Info:, so I guess it's not an error. My local devices aren't working and it seemed that updating to the latest packages would fix the problem, so when it said it wasn't doing anything, I assumed there was something wrong. Apparently, I'm already as updated as I can be, but local devices still aren't working. sigh Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Making Firefox safe for tests
Does anyone know how to make Firefox safe for giving online tests? I'd like to prevent students from navigating to different sites, going to different programs, and even from using Copy/Paste while they're taking a test. I realize this is pretty difficult, because you also have to prevent the OS from letting them close the browser or using any of the OS-level keyboard shortcuts, but surely this is a problem someone has solved before? Thanks, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
XServer out of memory issues
Does anyone have contacts at OO.o they could mention this to? If we just had a way to prevent applications from trying to cache stuff in video RAM that they don't need to, about 80% of my thin client crashing problems would be solved. Todd On Wed, 12 Dec 2007 18:57:35 -0500, Todd O'Bryan wrote Any progress on the issue of Firefox and OpenOffice trying to cache images in the thin client memory and then dying that Jim Kronebusch identified a while ago? I'm still seeing an awful lot of terminal crashes. During my planning period today, a student was working on an Impress presentation and, after the third crash, finally complained about it. I sent him to work on the monitor connected to the server and his problems, as expected, went away. Fixing this would make my students' complaints about Why don't we have Windows machines? go down considerably. Todd Firefox, yes, but you won't see that until FF3 is released. OpenOffice, no. The only fix right now is the XRAMPERC hack which I think is included in Gutsy, which only fixes the client from crashing, but you still loose the offending application data. I never did get to filing a bug with OpenOffice, if you wanted to do that it would be a good start. Xorg still thinks this is an impossible problem to solve, somehow making it not their problem. And unfortunately all these issues are only seen with thin clients, making the focus less a priority. Not that they aren't there in fat clients, just not noticed since the machine doesn't lock up. I think the OLPC guys were hammering on Xorg for this as well. I was hoping since they are a fairly large project they might have better luck. Ubuntu is large as well, but thin clients aren't the focus. Where OLPC only runs in a low resource environment, so it is there complete focus. Jim -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Edubuntu 7.10 - A Released Debacle and a Practice in Failure - Response
The Ubuntu release cycle is April October So which release is a good month for schools in both groups ? * Comments welcome on this one. * Let me suggest some slight out of the box thinking... What if Edubuntu came out just after Ubuntu? If the Edubuntu release happened at the beginning of June and December and included bug fixes discovered from the Ubuntu release just preceding, it would have the potential to be fairly solid, have some testing time before the next school term in both hemispheres, and would have its own deadline far enough away from the main release that developer resources could be re-deployed if necessary to finish work that was needed. I would emphasize that the Edubuntu release should include no features not present in the preceding Ubuntu release. It would just be an opportunity for thin client issues to be dealt with and some spit and polish to be put on the educational aspects. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
XServer out of memory issues
Any progress on the issue of Firefox and OpenOffice trying to cache images in the thin client memory and then dying that Jim Kronebusch identified a while ago? I'm still seeing an awful lot of terminal crashes. During my planning period today, a student was working on an Impress presentation and, after the third crash, finally complained about it. I sent him to work on the monitor connected to the server and his problems, as expected, went away. Fixing this would make my students' complaints about Why don't we have Windows machines? go down considerably. Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Firefox Granparadiso + Patch and tweak
I guess the thing we really need to do is push for some kind of standard way of saying how aggressive you want applications to be when they store pixmaps. Ideally, there should be some way to just tell applications not to store pixmaps at all, but to just display the pixels. I had a whole classroom freeze when students tried to create OO presentations. They could paste an image onto a slide, but as soon as they tried to crop it, the client died a pretty spectacular death. Any possibility that we could push for a --nopixmaps or --limitpixmaps option for most programs? Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: tips for Opera users
I just found a site tonight which suggests that OpenOffice, like Firefox, tries to cache pixmaps in the XServer. http://mille-xterm.org/en/TerminalMemoryUsage I wish there were one global place where we could turn this off for all applications. On Mon, 2007-09-17 at 21:57 -0500, Jim Kronebusch wrote: On Mon, 17 Sep 2007 19:39:06 -0600, Daniel J. Summers wrote Bryan Quigley wrote: What web browser do you use with that website (http://www.carteretcountyschools.org/bms/teacherwebs/sdavenport/artgallery6.htm http://www.carteretcountyschools.org/bms/teacherwebs/sdavenport/artgallery6.htm) normally? It performs very badly in both Firefox and IE on Windows 2000. For me both become very very slow to respond. IE handles it slighly better than Firefox, but not by much. Perhaps the website itself deserves some blame? (not making it any less of a Firefox/XOrg bug) I'll say - that design is terrible! The images should have their quality reduced at least 60%, if not more - at that resolution, you simply don't get any additional benefit from the larger file sizes. Yep, but that's not really the point. -- This message has been scanned for viruses and dangerous content by the Cotter Technology Department, and is believed to be clean. -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenOffice insert graphics, print and sometimes save=frozen client
But that doesn't explain the hard freezes a few of us reported when students pasted several images into Impress even without printing. On Sun, 2007-09-16 at 22:34 -0500, Jim Kronebusch wrote: On Sat, 15 Sep 2007 22:48:56 -0400, Todd O'Bryan wrote Can you try it in Feisty to see if it's a problem that's been fixed in Gutsy? I doubt Scott's results are the result of a fix in Gutsy. David Trask also reported he can print my test documents without a hitch other than mouse movements getting a little choppy and the client running somewhat sluggish until the job is dispatched to the printer (5-10 seconds worse case?). I can also reproduce Scott and David's success with higher memory printers (HP4550N and a Ricoh CL2000, I think both are 4MB-8MB as compared to a HP4000N's 2MB). At this point I am leaning towards low memory networked printers being the problem and the freeze resulting when printer memory is exceeded. I will also try attaching a HP4000 directly to a machine and sharing it, then printing from a client. My guess is that the machine acting as a print server will be able to cache the print job for the printer and the client will be able to go on its merry way.we'll see :-) I have an issue with jumbled graphics when printing images on the 6020p, but I think that is related to a separate issue affecting just the 6020p. Jim -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenOffice insert graphics, print and sometimes save=frozen client
Can you try it in Feisty to see if it's a problem that's been fixed in Gutsy? On Sat, 2007-09-15 at 20:16 -0500, Scott Balneaves wrote: On Thu, Sep 13, 2007 at 03:21:22PM -0500, Jim Kronebusch wrote: Well here I have been trying to figure out how to keep Firefox from freezing clients, and now I see OpenOffice is a major culprit as well. The best I can do to repeat the problem for troubleshooting is to create a new Writer document, insert a few graphics from openclipart (5 seems to be plenty), then try printing to one of our HP LaserJet 4000 printers, mouse gets a little jerky, sometimes graphics pop up all over the top of the screen, then before anything prints the client locks up. I've been trying to make this fail. Can't The document you sent me works just fine. Here's my setup: Server: cpu: model name : Intel(R) Core(TM)2 CPU 4400 @ 2.00GHz mobo: Asus P5K-VM Memory: 2 Gig Network card: onboard, intel E1000 Operating system: Edubuntu Gutsy, current to date of this email Chroot rebuilt as of this morning /var/lib/tftpboot/ltsp/lts.conf: [default] SOUND=True LOCALDEV=True LDM_SERVER=192.168.0.254 LDM_DIRECTX=True X_RAMPERC=80 Swap on server: standard 32 megs allocated to clients. Network: 100 MPBS switched, unmanged, generic Dlink 24 port switch Client: HP Compaq T5000 cpu: Transmeta Crusoe T5800 731 MHZ 1519 Bogomips Video: ATI Rage XL, using xorg's ati driver, autodetected. Network: Via Rhine II Memory: 128 Megs ram Printer: Brother HL-1060 laser printer, setup in cups, using cups supplied driver. Connected initially to server, via usb to parallel adapter Also tested with being plugged into thin client, and remote print queue set up via jetpipe. Testing methodology: Booted client as normal Logged on per normal. Launched OpenOffice.org from the applications menu Loaded testdocument.odt Document appears to have a graphic of a seagull, a boobie, and an owl. Could not tell if boobie was blue footed variety or not. Printed document. Loaded document again. Printed again. Repeated test 10-15 times. Observations: Mouse does become slightly jerky, probably from printing querying fonts on client, however, no crash observed. No errors in .xsession-errors of note related to OO.o, nothing observed in /var/log during the time period when test was conducted. Conclusion: Could not reproduce. -- Scott L. Balneaves | Eternity is a very long time, Systems Department | especially towards the end. Legal Aid Manitoba |-- Woody Allen -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenOffice insert graphics, print and sometimes save=frozen client
On Thu, 2007-09-13 at 23:03 -0500, Scott Balneaves wrote: On Thu, Sep 13, 2007 at 10:11:10PM -0400, Todd O'Bryan wrote: If developers want detailed information, they're going to have to tell us exactly what they want. :-) Seriously, though, I didn't really know what you'd need or where to send it. I'll pull together a profile of the lab and save it somewhere to send along with bug reports. If people want these problems fixed, they're going to have to start giving us DETAILED information. Here's what we need: a COMPLETE description of your server, including: Motherboard type/model number Amount of memory video card in server output of lspci -vv A COMPLETE description of your network, including: brands of switches used 10/100/1000? etc. a COMPLETE description of your thin clients, including: Motherboard type/model number Amount of memory video card in client output of lspci -vv listing of your lts.conf file, if any listing of your .xsession-errors any relevent output from dmesg, /var/log relevant is the hard question here. With 25 or so students working at once, is there an easy way to figure out what we should send and what we shouldn't? I mean, is it worth it to zip up the last hour or so of the log and tell you which client died? and, if a program crashes, locks up, etc: What steps you can take to make it fail if a document/website/email/attachment etc causes the failure, a copy of that sent to one of the developers. It seems to be fairly intermittent. My students were trying to use Impress yesterday and it would often freeze when they were trying to crop images, but not always at the same time or with the same image. Could it be that OO.org has adopted Firefox's strategy of trying to cache stuff in the XWindows memory? Lab details to follow soon... -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: OpenOffice insert graphics, print and sometimes save=frozen client
I'm seeing the same thing in my lab and it's getting downright annoying. I keep telling my students that the problem is my inability to correctly configure everything, but they're starting to think that Windows is less crash-prone than Linux and I don't want to be responsible for that perception. Todd On Thu, 2007-09-13 at 15:21 -0500, Jim Kronebusch wrote: Well here I have been trying to figure out how to keep Firefox from freezing clients, and now I see OpenOffice is a major culprit as well. The best I can do to repeat the problem for troubleshooting is to create a new Writer document, insert a few graphics from openclipart (5 seems to be plenty), then try printing to one of our HP LaserJet 4000 printers, mouse gets a little jerky, sometimes graphics pop up all over the top of the screen, then before anything prints the client locks up. I have monitored CPU/Memory usage with htop on the server, with htop in screen 1 on the client, with xrestop on the client from screen 7, memory usage with free on screen 1, and can not find a single spike in anything that seems to lead up to the freeze. However if I look at /home/username/.xsession-errors I do see some funky stuff that might start to tell a story. See below, I added some comments to help see a timeline: First cleared all stale processes for the user then boot client -- Log in as user, results below Xsession: X session started for jim at Thu Sep 13 14:58:58 CDT 2007 Setting IM through im-switch for locale=en_US. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. SESSION_MANAGER=local/ltsp:/tmp/.ICE-unix/9593 Initializing gnome-mount extension modinfo: could not find module fglrx modinfo: could not find module nvidia_legacy modinfo: could not find module nvidia_new modinfo: could not find module nvidia (gnome-panel:9651): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -1 and height 24 --Start OpenOffice no errors --Add in clipart, no errors --Print to LaserPrinter, errors below libGL error: open DRM failed (Operation not permitted) libGL error: reverting to (slow) indirect rendering Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x280005f (OpenOffice) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. --client now frozen The errors are not exactly the same every time. Sometimes the client freezes sooner than others. I can also reproduce some errors on saving a file or while simply making changes to a document with the graphics already inserted. But printing seems to be a sure fire way to freeze every time. I have un-installed xterminator, scim, and DIRECTX support thinking they may be a problem. No effect. I remember a couple of weeks ago David Trask reported similar problems when working in Writer and Impress. Below are some more errors I have seen, maybe some extra errors will give more clues: Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x260005d (OpenOffice) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x2600169 (german - O) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x280005d (OpenOffice) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x280005d (OpenOffice) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.** (gnome-printer-view:7072): CRITICAL **: gnome_cups_request_new_for_printer: assertion `gnome_cups_printer_get_attributes_initializ ed (printer)' failed ** (gnome-printer-view:7072): WARNING **: Neither request nor output_fd set Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x2a3 (CHS_Main_L) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x280005d (OpenOffice) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed. Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x280017a (german - O) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs
Re: Edubuntu server with one NIC
Javier, Where are you in Ecuador? If one of us were to send you a NIC: (a) How likely is it that it would get to you? (b) How much would you have to pay in taxes to accept it? I spent a semester during college in Quito--lived with a family a few blocks to the west of the airport just off Avenida 10 de Agosto and took classes at la Universidad Católica. My college still sends a group to Quito every year, I think. Todd On Mon, 2007-09-03 at 16:46 -0500, Javier Tibau wrote: On 9/3/07, David Trask [EMAIL PROTECTED] wrote: Javier Tibau [EMAIL PROTECTED] writes: I bought a HP ML150 G3 to install Edubuntu on it. After reading a bit, I decided on saving the $100 or so on the second Ethernet card. Now I'm stuck with either LTSP or Internet on my server. A $100! For a second NIC? You can buy your own Intel Pro 10/100/1000 gigabit adapter for $30 US on TigerDirect. I forgot to mention, I live in Ecuador, South America... So no TigerDirect for me :( and I think that's ($100) about what my provider offered me (not sure). But seriously thougha one NIC edubuntu server is a piece of cake. The easiest way is to let the Edubuntu server be the DHCP server for your LAN. All of my Edubuntu servers here at school are all single NIC machines. I eventually figured out what I was doing wrong... I was trying to get both the thin clients and other computers (my laptop) to use de same settings for internet. When I changed the dhcp.conf so it would work for the computers that connected to the network, LTSP stopped working and viceversa. I still don't know if I can actually have both regular PCs and thin clients in the same network both using the same DHCP, well I stopped trying. Anyway, I now have a working internet connection. And since the rest of the computers are laptops, they can use another wireless network to get online. Maybe I'll get back to this problem once I get the rest tested. David N. Trask Technology Teacher/Director Vassalboro Community School [EMAIL PROTECTED] (207)923-3100 -- Javier Tibau -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Turn off encryption from client to server?
Hey all! School starts next week for me and I'm wondering if there's an easy way to turn off the SSH encryption between the thin clients and the server. The whole lab is on a self-contained network behind the server and I just don't need the security. I'm hoping that not making the clients do the extra bit of work to decrypt the video from the server will speed things up a little. The lab works wonderfully, but, especially with video or animation (I teach programming.), a little extra speed would be a nice thing indeed. TAO -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: Your feedback is much appreciated
On Sat, 2007-06-16 at 16:38 -0700, [EMAIL PROTECTED] wrote: I could use more tutoring on the salient differences between a diskless thick client and diskless thin client. A thin client is basically a video device that allows you to see what is running on a server. With thin clients, all of the processing occurs on the server, the video is sent over the network and simply displayed by the client. Above a certain point, extra power in a thin client is just wasted. The nice thing about thin clients is that you can upgrade a whole lab just by upgrading the server. Also thin clients tend to have effective lifetimes of several years because they have few, if any, moving parts and don't need more processing power as applications become more intensive. A diskless thick client is a computer that downloads its operating system and applications from a central server, but runs the applications itself. The major advantage is that, because the applications are run locally, not on the server, one server can accommodate many more clients. Also, video doesn't need to be sent down to each client, so the network demands are considerably smaller than with thin clients. The major disadvantage is that the client must be powerful enough to run the applications--considerably more powerful than a typical thin client. Thick clients also tend to have shorter life expectancies than thin clients, because they must be upgraded to keep up with the increasing demands of more complicated software. On the other hand, having a really powerful server with thick clients isn't as important as long as it has relatively quick disk access. HTH, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Local Devices using 6.10 of Ubuntu
I'm cross-posting this both to the edubuntu-users and ubuntu-education list, because I'm not quite sure where it belongs. Apologies in advance, and if someone could tell me where it's most appropriate, I'll steer the threads to that list. I've just installed a thin client lab in my high school computer science classroom. I went with Ubuntu 6.10 rather than Edubuntu because it seem more appropriate for my age group and I didn't need GCompris and some of the other early learning programs. I downloaded and installed the ltsp package from the repositories and the clients are booting just fine, but USB drives don't show up. I've found lots of how-tos for LTSP 4.1 and 4.2, but none for Muekow. So, either the USB drives are working and I just don't know where to look for them, or I don't know how to get them working. Any help appreciated, Todd -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
