Re: Disable Module from xorg.conf via lts.conf
On Mon, 10 Mar 2008 10:01:08 -0500, Jim Kronebusch wrote Does anyone know if there is a way to disable a specific xorg module such as dri via lts.conf besides calling out a complete custom xorg.conf file? I need to disable dri on my DevonIT 6020p's because of a bug that doesn't allow Wine to run under the via driver with dri enabled. I just found this in the Edubuntu handbook: X_OPTION_01 through X_OPTION_12 This allows you to specify Option settings in the xorg.conf file, to add options to the video driver. A common use for this will be to test turning off accelleration in your driver, if you're having trouble. An example usage would be: X_OPTION_01 = \NoAccel\ X_OPTION_02 = \AnotherOption\ \True\ . You probably won't need these except in special circumstances. I'm going to give it a try now. Jim -- 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: Static IP for some of my thin clients
Nicolas Roussi kirjoitti: I need to now give static IPs to the clients. which dhcpd.conf do I edit and what do I write in it? Take a look at here. These all are for Ubuntu 6.06+LTSP 4.2 with static IP numbers. http://www.arkki.info/howto/Wiki/LTSP-Koti/dhcpd.conf.txt http://www.arkki.info/howto/Wiki/LTSP-Kokkola/dhcpd.conf.txt http://www.arkki.info/howto/Wiki/LTSP-Kaarlela/dhcpd.conf.txt http://www.arkki.info/howto/Wiki/LTSP-Mantykangas/dhcpd.conf-master.txt http://www.arkki.info/howto/Wiki/LTSP-Mantykangas/dhcpd.conf-slave.txt 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: terminals randomly disconnecting
On 12/01/2008, Krsnendu dasa [EMAIL PROTECTED] wrote: I have noticed a few other problems and narrowed down the problem (I think) to either os problem or motherboard problem. (Don't think it is the switch or the network card.) Read below for more details. Thanks for all tips. On 07/01/2008, Gavin McCullagh [EMAIL PROTECTED] wrote: Hi, On Mon, 07 Jan 2008, Krsnendu dasa wrote: I am experiencing an unusual problem. Occasionally (every 15 mins or so) all the terminals just disconnect. The terminals need restarting before they work again. What you say all, you mean every thin client connected to the server? Yes. Also windows computers that were connecting to the internet and using dns through the edubuntu server also had disconnection problems. I changed dhcpd.conf to get dns from another server and it seemed to fix the windows laptop to internet problem. I am having intermittent problems with samba also. One minute I can connect to the shares on edubuntu then the next minute I can't then I can again. It seems to take a long time for the server to register when new windows computers in the workgroup have connnected. At one point I noticed that nmbd wasn't running so I manually restarted it. This is after I had already restarted samba using init.d and webmin. Every 15 minutes is pretty nasty. I guess at least it's easy enough to repeat if you're testing. May not be exactly every 15 minutes, maybe closer to 30mins. You say the clients need restarting and I gather the server doesn't. Can you ping a thin client after this happens (ie without rebooting it)? If you press ctrlaltbackspace is that enough to restart the thin client? I haven't tried this as I haven't been at school much. I will try it next time I am at school when it freezes. In what I think may be a related issue, some times when someone is logged in their terminal freezes and the panel at the bottom of the screen which shows which windows are open just has three tabs that all say untitled window. Have you had opportunity to watch top for a few minutes and see does some process go wild around this point? I haven't noticed anything. I will look again and see if anything stands out. Background: I am using 32 Edubuntu 7.04 on Intel Quad Core. 4 Gb RAM. I am using directx ldm and smbldap. Would it be possible for you to try not using direct-x and go back to the default ssh method? I can also try this, but my instinct (and the dns /samba problems) seem to point to bigger connection problems than ldm. I also get disconnected when I log in from home using nx. I am using a 100/1000 unmanaged switch which feeds 10/100 switches in each class. Things I have already tried. At first I thought it could be the 1000 switch, so I swapped it for another one, but the problem remains. Was it another similar switch? Could it be a problem between the switches? The second time I used a different brand of switch and a 10/100 switch, so I don't think the switch is to blame. Possible solutions: Could upgrading to Gutsy help? It's hard to say without knowing what the cause of the problem is. If may be my old windows conditioning, but I feel like a reinstall might help... or not. Could it be the network card in the server? Sounds plausible. I tried another network card and the same problems are there. Can someone help me debug this? Are there any log files I can check to trace the origin of this problem? Yes: /var/log/syslog /var/log/messages /var/log/kern.log /var/log/daemon.log I had a look there and couldn't find anything that stood out for me. A few times I saw something that said disconnected or something like that. Perhaps I will copy and paste a section around the time when a disconnect happens and post it for any experts to analyse. Thanks for any help. This is really frustrating, because I had a very stable system with K12LTSP 6, and now with Edubutnu 7.04 I have having quite a few problems. How long have you had this problem? You've been using 7.04 for a while, right? Has it always happened? Has anything changed to prompt this? We installed some time in October. This problem has been only since December. I can't think of anything that changed at that time. The last thing I remember that changed is... A course management software web-based application was installed and there were some changes to dns. Back to the drawing board... I have installed Hardy and the problem persists. I will have to investigate the network and system more thoroughly and document it robustly. Summary: Initial Problem: Feisty install of Edubuntu - One Network interface: Server randomly disconnects from the network about every 20-30 mins. Terminals left with 3 unusual untitled windows tabs at the bottom of the screen. ALT-Ctrl-backspace
Re: Disable Module from xorg.conf via lts.conf
On Mon, 10 Mar 2008 10:01:08 -0500, Jim Kronebusch wrote Does anyone know if there is a way to disable a specific xorg module such as dri via lts.conf besides calling out a complete custom xorg.conf file? I need to disable dri on my DevonIT 6020p's because of a bug that doesn't allow Wine to run under the via driver with dri enabled. I just found this in the Edubuntu handbook: X_OPTION_01 through X_OPTION_12 This allows you to specify Option settings in the xorg.conf file, to add options to the video driver. A common use for this will be to testturning off accelleration in your driver, if you're having trouble. An example usage would be: X_OPTION_01 = \NoAccel\ X_OPTION_02 = \AnotherOption\ \True\ . You probably won't need these except in special circumstances. I'm going to give it a try now. Didn't work under Feisty. For now I just pointed to a custom xorg.conf. Jim -- This message has been scanned for viruses and dangerous content by the Cotter Technology Department, and is believed to be clean. --- End of Forwarded Message --- Jim Kronebusch Cotter Tech Department 453-5188 -- 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: ``/boot/nbi.img-2.6.22-14-386'':File exists
Hi, 2008/3/10, Nicolas Roussi [EMAIL PROTECTED]: Thanks for the previous replies. I tried to install the x11vnc and tor in my chroot and I am getting these error message Unpacking replacement linux-image-2.6.22-14-386 ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/ltsp-update-kernels Cannot open ``/boot/nbi.img-2.6.22-14-386'':File exists run-parts: /etc/kernel/postrm.d/ltsp-update-kernels exited with return code 1 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.22-14-386.postrm line 320. dpkg: warning - old post-removal script returned error exit status 1 dpkg - trying script from the new package instead ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/ltsp-update-kernels Cannot open ``/boot/nbi.img-2.6.22-14-386'':File exists run-parts: /etc/kernel/postrm.d/ltsp-update-kernels exited with return code 1 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/tmp.ci/postrm line 320. dpkg: error processing /var/cache/apt/archives/linux-image-2.6.22-14-386_2.6.22-14.52_i386.deb (--unpack): subprocess new post-removal script returned error exit status 1 Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/ltsp-update-kernels Cannot open ``/boot/nbi.img-2.6.22-14-386'':File exists run-parts: /etc/kernel/postrm.d/ltsp-update-kernels exited with return code 1 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/tmp.ci/postrm line 320. dpkg: error while cleaning up: subprocess post-removal script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/linux-image-2.6.22-14-386_2.6.22-14.52_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Anyone has a fix for this? I read through the mailing list but there does not seem to be a solution It's this bug https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/190419 rename or delete the nbi.img-2.6.22-14-386 and in the chroot use apt-get -f install for finish the configuration. Bye Manu -- Emmanuel Le Normand Ubuntu-fr / Edubuntu-fr -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
Re: terminals randomly disconnecting
On Mon, Mar 10, 2008 at 1:59 PM, Krsnendu dasa [EMAIL PROTECTED] wrote: On 12/01/2008, Krsnendu dasa [EMAIL PROTECTED] wrote: I have noticed a few other problems and narrowed down the problem (I think) to either os problem or motherboard problem. (Don't think it is the switch or the network card.) Read below for more details. Thanks for all tips. On 07/01/2008, Gavin McCullagh [EMAIL PROTECTED] wrote: Hi, On Mon, 07 Jan 2008, Krsnendu dasa wrote: I am experiencing an unusual problem. Occasionally (every 15 mins or so) all the terminals just disconnect. The terminals need restarting before they work again. What you say all, you mean every thin client connected to the server? Yes. Also windows computers that were connecting to the internet and using dns through the edubuntu server also had disconnection problems. I changed dhcpd.conf to get dns from another server and it seemed to fix the windows laptop to internet problem. I am having intermittent problems with samba also. One minute I can connect to the shares on edubuntu then the next minute I can't then I can again. It seems to take a long time for the server to register when new windows computers in the workgroup have connnected. At one point I noticed that nmbd wasn't running so I manually restarted it. This is after I had already restarted samba using init.d and webmin. Every 15 minutes is pretty nasty. I guess at least it's easy enough to repeat if you're testing. May not be exactly every 15 minutes, maybe closer to 30mins. You say the clients need restarting and I gather the server doesn't. Can you ping a thin client after this happens (ie without rebooting it)? If you press ctrlaltbackspace is that enough to restart the thin client? I haven't tried this as I haven't been at school much. I will try it next time I am at school when it freezes. In what I think may be a related issue, some times when someone is logged in their terminal freezes and the panel at the bottom of the screen which shows which windows are open just has three tabs that all say untitled window. Have you had opportunity to watch top for a few minutes and see does some process go wild around this point? I haven't noticed anything. I will look again and see if anything stands out. Background: I am using 32 Edubuntu 7.04 on Intel Quad Core. 4 Gb RAM. I am using directx ldm and smbldap. Would it be possible for you to try not using direct-x and go back to the default ssh method? I can also try this, but my instinct (and the dns /samba problems) seem to point to bigger connection problems than ldm. I also get disconnected when I log in from home using nx. I am using a 100/1000 unmanaged switch which feeds 10/100 switches in each class. Things I have already tried. At first I thought it could be the 1000 switch, so I swapped it for another one, but the problem remains. Was it another similar switch? Could it be a problem between the switches? The second time I used a different brand of switch and a 10/100 switch, so I don't think the switch is to blame. Possible solutions: Could upgrading to Gutsy help? It's hard to say without knowing what the cause of the problem is. If may be my old windows conditioning, but I feel like a reinstall might help... or not. Could it be the network card in the server? Sounds plausible. I tried another network card and the same problems are there. Can someone help me debug this? Are there any log files I can check to trace the origin of this problem? Yes: /var/log/syslog /var/log/messages /var/log/kern.log /var/log/daemon.log I had a look there and couldn't find anything that stood out for me. A few times I saw something that said disconnected or something like that. Perhaps I will copy and paste a section around the time when a disconnect happens and post it for any experts to analyse. Thanks for any help. This is really frustrating, because I had a very stable system with K12LTSP 6, and now with Edubutnu 7.04 I have having quite a few problems. How long have you had this problem? You've been using 7.04 for a while, right? Has it always happened? Has anything changed to prompt this? We installed some time in October. This problem has been only since December. I can't think of anything that changed at that time. The last thing I remember that changed is... A course management software web-based application was installed and there were some changes to dns. Also, keep in mind that seemingly innocent physical changes can impact your network. Was there any maintenance done on the building in the December timeframe? Any new items (non computer) added to the electrical system in the building?
Re: terminals randomly disconnecting
I had a problem recently that was similar to yours where one particular unit would log out spontaneously at a random time, usually within 30 minutes. Sometimes when the user using that unit would log on they would get someone else's wallpaper or even home desktop. I couldn't figure out what was causing it, until I finally saw that one of the computers in a totally different part of the building had a shoddy job done on the patching of the ethernet end. The 2 computers were somehow conflicting with each other, logging themselves out and generally behaving very unstably. I re-grimped the cable really carefully and the problems subsided. Since then, no such problems have come back to haunt me. The moral of the story is that, especially on gigabit networks, even a single badly grimped cable (not shielded, badly plugged in or whatever else) will cause your network to do strange things like what you are describing. It almost certainly sounds to me like a physical problem, as Charles suggested. At least for me, every time that kind of behaviour happens, and it has happened many times, it has been because of a switch, a network cable, a network card or something else physical. Good luck, David On Mon, Mar 10, 2008 at 9:24 PM, Charles Austin [EMAIL PROTECTED] wrote: On Mon, Mar 10, 2008 at 1:59 PM, Krsnendu dasa [EMAIL PROTECTED] wrote: On 12/01/2008, Krsnendu dasa [EMAIL PROTECTED] wrote: I have noticed a few other problems and narrowed down the problem (I think) to either os problem or motherboard problem. (Don't think it is the switch or the network card.) Read below for more details. Thanks for all tips. On 07/01/2008, Gavin McCullagh [EMAIL PROTECTED] wrote: Hi, On Mon, 07 Jan 2008, Krsnendu dasa wrote: I am experiencing an unusual problem. Occasionally (every 15 mins or so) all the terminals just disconnect. The terminals need restarting before they work again. What you say all, you mean every thin client connected to the server? Yes. Also windows computers that were connecting to the internet and using dns through the edubuntu server also had disconnection problems. I changed dhcpd.conf to get dns from another server and it seemed to fix the windows laptop to internet problem. I am having intermittent problems with samba also. One minute I can connect to the shares on edubuntu then the next minute I can't then I can again. It seems to take a long time for the server to register when new windows computers in the workgroup have connnected. At one point I noticed that nmbd wasn't running so I manually restarted it. This is after I had already restarted samba using init.d and webmin. Every 15 minutes is pretty nasty. I guess at least it's easy enough to repeat if you're testing. May not be exactly every 15 minutes, maybe closer to 30mins. You say the clients need restarting and I gather the server doesn't. Can you ping a thin client after this happens (ie without rebooting it)? If you press ctrlaltbackspace is that enough to restart the thin client? I haven't tried this as I haven't been at school much. I will try it next time I am at school when it freezes. In what I think may be a related issue, some times when someone is logged in their terminal freezes and the panel at the bottom of the screen which shows which windows are open just has three tabs that all say untitled window. Have you had opportunity to watch top for a few minutes and see does some process go wild around this point? I haven't noticed anything. I will look again and see if anything stands out. Background: I am using 32 Edubuntu 7.04 on Intel Quad Core. 4 Gb RAM. I am using directx ldm and smbldap. Would it be possible for you to try not using direct-x and go back to the default ssh method? I can also try this, but my instinct (and the dns /samba problems) seem to point to bigger connection problems than ldm. I also get disconnected when I log in from home using nx. I am using a 100/1000 unmanaged switch which feeds 10/100 switches in each class. Things I have already tried. At first I thought it could be the 1000 switch, so I swapped it for another one, but the problem remains. Was it another similar switch? Could it be a problem between the switches? The second time I used a different brand of switch and a 10/100 switch, so I don't think the switch is to blame. Possible solutions: Could upgrading to Gutsy help? It's hard to say without knowing what the cause of the problem is. If may be my old windows conditioning, but I feel like a reinstall might help... or not. Could it be the network card in the server? Sounds plausible. I tried another network
low fat clients - 2 issues
I've finally had some time to test my low fat clients to see what else can be done to get them working better, and for now I have managed to get all the software I needed to install within the chroot without problems (usually mounting proc and sys fix most installation issues.) Both Gnome and XFCE have been tested, though I'm pretty sure kde and kde4 should work too. I'm mounting via nfs, which seems to work fine, although logout takes about a minute (before the screen comes up with logout options.) I finally got sound and flash to work by installing libflashsupport from the hardy rep (on gutsy), and compiling flash from source. Java also installed fine and now works in all the cases I've tested. I've stress tested this on 10 clients at once and got great results for flash. Of course can't see what's happening from the server on a process level, but doesn't matter, at least my network isn't crawling to a halt because of gone crazy processes in firefox, and I know flash is the culprit here. I use gnash on the server side thin client (for sound support on youtube which some teachers use.) My server is 64bit so the low fat client environment also solved the otherwise not working java and flash (in some cases.) And I want to take advantage of the xeon processors so I dont want to resort to using nspluginwrapper. So... everything seems to be working great except usb or local devices. I've tried quite a lot of stuff, even various automounting scripts and tools floating around the internet without success. I can mount the devices manually without issues. Groups are all correct, but perhaps this is automounting at the root user level which is what's stopping it, or interference from the ltsp init scripts, though I doubt it since the RCFILE= are executed after all of that. Finally I have another logical issue, which is that dansguardian and squid don't relay traffic on the local interfaces, because I was using a simple iptables rule to direct all traffic in a particular group to dans and all other traffic to squid. Now because on the local level it can't read the LDAP groups from the server (I guess) iptables doesn't know what to do with the traffic. Maybe someone can give me some hints. If I can solve these 2 issues then the low fat clients can finally be useful in my environment. Many thanks, David -- edubuntu-users mailing list edubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
