Re: [Ltsp-discuss] Only some users can log in?
Good day Alkis, I hope you are doing very well today. With regards to the situation where users can log into the main server but cannot log into a thin client, I wanted to follow-up with what you did. After you had logged into the server and created the user LTSP using the command line (instead of Webmin) I went to the school and tested logging in as the user at a client. The user could not log in. The same issue arises -- the system seems to be loading the desktop, then it flashes back to the login screen. I was also able to activate the VT-x in the BIOS and using Virtual box, the same problem occurred. I looked in the directory of the LTSP user that you had created and I can see, after the failed login attempt the following new item: Directories: Desktop Documents Downloads Music Pictures Public Templates Videos Files: .cache .dbus .Xauthority .bash_history .bash_logout .bashrc .profile .xsession-errors The only one that seemed relevant was .xsession-errors. The contents of that file are: Xsession: X session started for ltsp at Fri May 19 16:50:14 EST 2017 localuser:ltsp being added to access control list openConnection: connect: No such file or directory cannot connect to brltty at :0 /etc/X11/Xsession: 3: [: x: unexpected operator Xsession: X session started for ltsp at Fri May 19 16:58:28 EST 2017 localuser:ltsp being added to access control list openConnection: connect: No such file or directory cannot connect to brltty at :0 /etc/X11/Xsession: 3: [: x: unexpected operator Searching through the logs is throwing up a lot of things because the username is LTSP! I can create a new user with a more unique name and try to search the logs again. What else could I do? Thank you! Joseph On Fri, May 19, 2017 at 1:36 AM, Alkis Georgopouloswrote: > Hi Joseph, > > it sounds like a problem specific to your setup, caused by some > administrative actions. Its troubleshooting may require some time, so > it'd be best if you came to IRC some weekday morning (Greek timezone) > for remote support. > > http://ltsp.org/irc > > Cheers, > Alkis Georgopoulos > Professional LTSP support: alk...@gmail.com > > > On 18/05/2017 11:31 μμ, Joseph Bishay wrote: >> Hello Alkis, >> >> I went to the school and followed your recommendation to test changing >> the session to xterm fallback and then launching the desktop from >> there so I can see the errors. I tried that but the xterm doesn't >> launch. Exactly the same error occurs -- it appears to be loading >> but then the screen blanks out and then reloads the login screen. >> >> I also wondered if it was an issue with the users and how they were >> rsynced. So I used Webmin to delete the users and all their files, >> their group, home folders and files. I then imported into webmin a >> clean list of users with the correct UID and hashed passwords. The >> system correctly created their home directories with the right UID >> permissions. I didn't move into it any of their old files. At the >> server console I can log into the graphical interface as the user no >> problem, but at a fat client I cannot - same issue that it appears to >> load, then refreshes and brings up the login screen. >> >> What do you think? >> >> Thank you >> Joseph > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
Re: [Ltsp-discuss] Only some users can log in?
Hi Joseph, it sounds like a problem specific to your setup, caused by some administrative actions. Its troubleshooting may require some time, so it'd be best if you came to IRC some weekday morning (Greek timezone) for remote support. http://ltsp.org/irc Cheers, Alkis Georgopoulos Professional LTSP support: alk...@gmail.com On 18/05/2017 11:31 μμ, Joseph Bishay wrote: > Hello Alkis, > > I went to the school and followed your recommendation to test changing > the session to xterm fallback and then launching the desktop from > there so I can see the errors. I tried that but the xterm doesn't > launch. Exactly the same error occurs -- it appears to be loading > but then the screen blanks out and then reloads the login screen. > > I also wondered if it was an issue with the users and how they were > rsynced. So I used Webmin to delete the users and all their files, > their group, home folders and files. I then imported into webmin a > clean list of users with the correct UID and hashed passwords. The > system correctly created their home directories with the right UID > permissions. I didn't move into it any of their old files. At the > server console I can log into the graphical interface as the user no > problem, but at a fat client I cannot - same issue that it appears to > load, then refreshes and brings up the login screen. > > What do you think? > > Thank you > Joseph -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
Re: [Ltsp-discuss] Only some users can log in?
Hello Alkis, I went to the school and followed your recommendation to test changing the session to xterm fallback and then launching the desktop from there so I can see the errors. I tried that but the xterm doesn't launch. Exactly the same error occurs -- it appears to be loading but then the screen blanks out and then reloads the login screen. I also wondered if it was an issue with the users and how they were rsynced. So I used Webmin to delete the users and all their files, their group, home folders and files. I then imported into webmin a clean list of users with the correct UID and hashed passwords. The system correctly created their home directories with the right UID permissions. I didn't move into it any of their old files. At the server console I can log into the graphical interface as the user no problem, but at a fat client I cannot - same issue that it appears to load, then refreshes and brings up the login screen. What do you think? Thank you Joseph On Mon, May 15, 2017 at 2:09 AM, Alkis Georgopouloswrote: > Check if those users have a ~/.dmrc file from which they select e.g. the > gnome-flashback session, which doesn't exist in mate. > > If so, delete those files. > > On 15/05/2017 06:24 πμ, Joseph Bishay wrote: >> Hello everyone, >> >> I hope you are all doing very well today. >> >> We have a new LTSP server for our school. It is a base OS of >> Ubuntu-Mate that then has LTSP installed on top of it in 2-NIC >> configuration. We've been running such a system for over a decade >> with lots of success. >> >> When we were copying over our users /home folders, we came across a >> strange problem -- some users are able to log on from the fat clients, >> but some users cannot. All users can log into the server directly if >> they are standing at the server, but not all those same users can log >> in from a fat client! I am unable to determine what is the difference >> between those who are able to log in and those who cannot. >> >> We have tried to update the SSH keys and the ltsp-image, but no >> effect. Some users can log in, some cannot. >> >> For those who cannot, what happens is they log in, put the correct >> password, and they see the login screen go away as if it is loading >> their desktop, the mouse turns into the loading cursor, and then it >> just loads up the login screen again. It is definitely not the same >> thing that happens if they were to put a wrong password. >> >> Where should we look for clues? How could we fix this please? >> >> Thank you! >> Joseph >> >> -- >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _ >> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: >> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss >> For additional LTSP help, try #ltsp channel on irc.freenode.net >> > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
Re: [Ltsp-discuss] Only some users can log in?
Hello Alkis, Thank you for your reply. We wrote a little script to delete all the configuration files from the users when we migrated their files. All the .something files and folders were deleted before they logged in. All that is in their directories are their documents. I double-checked and there is no ~/.dmrc file. I tried to log in as a user and found after the failed log in attempt there is a newly-created file called .xsession-errors. Inside that file is the following: Xsession: X session started for jbishay at Mon May 15 10:34:32 EST 2017 localuser:jbishay being added to access control list openConnection: connect: No such file or directory cannot connect to brltty at :0 /etc/X11/Xsession: 3: [: x: unexpected operator Searching online for the openConnection shows me some postings about Nvidia cards and driver errors, but we are using clients with ATI cards. I also tried a different thin client and the same issue arose. What else could it be? A permission's issue? A different UID or GID between the old and new machines? To transfer the files over we used rsync on /home from the old server to the new one. The new server actually had an old backup of /home so rsync was a faster way of updating everyone's files rather than trying to move over 600 GB of users from scratch. I appreciate the help! Joseph On Mon, May 15, 2017 at 2:09 AM, Alkis Georgopouloswrote: > Check if those users have a ~/.dmrc file from which they select e.g. the > gnome-flashback session, which doesn't exist in mate. > > If so, delete those files. > > On 15/05/2017 06:24 πμ, Joseph Bishay wrote: >> Hello everyone, >> >> I hope you are all doing very well today. >> >> We have a new LTSP server for our school. It is a base OS of >> Ubuntu-Mate that then has LTSP installed on top of it in 2-NIC >> configuration. We've been running such a system for over a decade >> with lots of success. >> >> When we were copying over our users /home folders, we came across a >> strange problem -- some users are able to log on from the fat clients, >> but some users cannot. All users can log into the server directly if >> they are standing at the server, but not all those same users can log >> in from a fat client! I am unable to determine what is the difference >> between those who are able to log in and those who cannot. >> >> We have tried to update the SSH keys and the ltsp-image, but no >> effect. Some users can log in, some cannot. >> >> For those who cannot, what happens is they log in, put the correct >> password, and they see the login screen go away as if it is loading >> their desktop, the mouse turns into the loading cursor, and then it >> just loads up the login screen again. It is definitely not the same >> thing that happens if they were to put a wrong password. >> >> Where should we look for clues? How could we fix this please? >> >> Thank you! >> Joseph >> >> -- >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _ >> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: >> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss >> For additional LTSP help, try #ltsp channel on irc.freenode.net >> > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
Re: [Ltsp-discuss] Only some users can log in?
Check if those users have a ~/.dmrc file from which they select e.g. the gnome-flashback session, which doesn't exist in mate. If so, delete those files. On 15/05/2017 06:24 πμ, Joseph Bishay wrote: > Hello everyone, > > I hope you are all doing very well today. > > We have a new LTSP server for our school. It is a base OS of > Ubuntu-Mate that then has LTSP installed on top of it in 2-NIC > configuration. We've been running such a system for over a decade > with lots of success. > > When we were copying over our users /home folders, we came across a > strange problem -- some users are able to log on from the fat clients, > but some users cannot. All users can log into the server directly if > they are standing at the server, but not all those same users can log > in from a fat client! I am unable to determine what is the difference > between those who are able to log in and those who cannot. > > We have tried to update the SSH keys and the ltsp-image, but no > effect. Some users can log in, some cannot. > > For those who cannot, what happens is they log in, put the correct > password, and they see the login screen go away as if it is loading > their desktop, the mouse turns into the loading cursor, and then it > just loads up the login screen again. It is definitely not the same > thing that happens if they were to put a wrong password. > > Where should we look for clues? How could we fix this please? > > Thank you! > Joseph > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net > -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net