Ubuntu :: Logout Causes Screen To Scramble?
Mar 12, 2011
Dell Latitude D610 Laptop on a docking station running Ubuntu 10.04 Have 2 monitors, monitor 1 using DVI, monitor 2 using VGA. Extended desktop working as intended out of the box...was not successful getting the ATI Catalyst Control Center to work, but no big deal.The big deal is, when I log out, my screen on the DVI monitor scrambles, and you cannot see the login prompt at all. I get the little drumbeat SFX, and attempt to press enter and blindly enter password, but no login. The VGA monitor remains blank
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May 9, 2011
Started with Lucid where my file system would go corrupt every week or so. Now I'm on Natty and it's 10x worse..
What happens:Either full computer lockup; screen is froze but mouse still moves, can not click anything. Keyboard LED's are also frozen. I have to use SysRq+REISUB to reboot at this point.OR: Screen graphics scramble, programs won't load their GUI's but are still functional.
File system sometimes becomes read only and corrupt too when this happens.
Hardware:
Computer Processor: 2x Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz
Memory 3086MB: (443MB used)
VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
OS/Kernel
code....
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Jan 12, 2011
If I try to logout or switch user, I end up with a black screen and a blinking cursor. I can type and the letters show up on the screen but don't do anything. I can do Ctrl-Alt-F1 and then "sudo service kdm restart", but I'd rather fix the underlying problem..Google gives several pages with similar problems but they all seem pretty old (2007), and they don't seem to apply to 10.10.
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Sep 8, 2010
Every time me or another user uses the "log out" option were faced with a black screen that does not go away, unless the computer is restarted. i've left it for an hour thinking it might have just slowed down or something but that was a no go, and it happens each time you try to use it. the strange thing is if the black screen is up programs still run. i have a media server running most of the time and i have no problem accessing it while the black screen is showing.
Another problem im having is that sometimes when a user logs in they have no sound. the sound icon is showing that no sound is installed, but when another user logs in there is no problem and sound works fine.
Lastly i dont know if this is a feature or a problem. the first user to log in will always have control over the network connection. for example if my mother logs in first the icon to switch connections will show up on the top of her screen and she has full access to what connections she wants to use, also her account is just a basic user account. now when i log in i wont have the network icon on the top of my screen, and my account is the main admin account.
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Sep 14, 2010
So I have Ubuntu Lucid machines about 20 of them. Configured via ldap authentication. I seem to be running into a rather strange logout problem. Whenever users click logout they're logged out, however after that all i get is the background screen with the cursor. The cursor is able to move, but no login screen.If i go to a terminal window alt+f1 and do a service gdm restart, then the login screen goes back to normal.
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Apr 30, 2011
However, there are one or two stability issues. In particular, over the last couple of days, I have seen two occasions where my screen suddenly goes blank, and after about 3 seconds I am presented with the login manager. I can then log in, and the desktop works fine again. Of course, everything I was doing is gone... So, where do I look to find what is causing the problem? I'd like to find out and either fix this here or submit a useful bug.
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Jul 27, 2010
I just installed F13 on my netbook (Toshiba NB205). Whenever the screensaver locks the screen (manually or due to a timeout), the unlocking of the screensaver causes my account to logout and I'm left at the GDM login screen. I've been seeing that the "work around" is to turn off the screensaver lock.
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Jun 24, 2011
If I logout on terminal, old contents are still possible to be read. I was trying to get it to work using pam_exec, by adding
Code:
Code:
This however didn't do antyhing. How to make it work using pam? I know that i can simply add some control codes to /etc/issue to get basically the same effect, but i wanted to do it using pam.
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Jan 7, 2010
After updating my Slackware-Current (there was kernel and glibc package updates), I just get a black screen with a blinking "_" in the top-left corner when I logout.
I checked /var/log/kdm.log and found these errors:
Code:
I've found a workaround: uncommenting "TerminateServer=true" in kdmrc.
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May 12, 2010
I see I'm finally posting an AWK question rather than an answer for a change I wanted to make an AWK script that would scramble all the characters in each field, but leave the first and last characters where they were.
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Oct 17, 2010
As a normal user I have activated the functions of the Quit applet, i.e. Logout, Shutdown and Restart are active buttons. I am able to restart or shutdown, no problems. But when I use the Logout button I don't get logged out, just returned to the login shell & I am still logged in as my user. I don't have a display manager installed and I do NOT want to use a display manager such as XDM or GDM. How do I get the Logout button to actually logout the user? It appears I am only getting logged out of the x-session, but I want complete logout.
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Jan 12, 2010
i installed Xubuntu desktop and decided i didn't like and uninstalled it.. but it hijacked my boot screen and login/logout screen. i restored the boot screen but i can't find out how to restore the login/logout screen.
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Aug 26, 2010
I have Lucid setup for multi user. Whenever 2 users are logged in and one logs off, it freezes on a black screen. It looks like it logs off OK and is on its way to the main login screen but never gets there. I found some older posts describing this problem but no solution. I tried to post to that thread but got a message saying I was not permitted. I am new to Linux and am struggling to figure out how to problem solve issues in Ubuntu.
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Jan 22, 2011
I am using KDE4 on 10.10 64-bit.
Only ever use the KDE desktop so completely removed XFE and the rudimentary Gnome left behind on the install.
Not a desperate problem just an annoyance.
Everything works fine, except if I logout the next login screen is using a really tiny font and I can't seem to find anywhere to change it.
The DPI must be about 10, as I can't even read it when blown up on my projector.
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May 3, 2011
I'm trying to run Slackware 13.37 64-bit in a VirtualBox virtual machine. My VirtualBox version is 3.2.12. I had to disable compositing to keep the X-Server from reporting a segfault.Now the problem is that on logout from KDE I get a completely black screen. I can switch to a console session and type commands to get the login screen again.
telinit 3
telinit 4
I tried editing "kdmrc" to add the line "TerminateServer=true" but it had no effect on the problem.I had this working with Slackware 13.1 at one time, but I can't seem to get it working properly now even without desktop effects.I'm trying to avoid changing my VirtualBox software since each version seems to just introduce new and different bugs. The 4.X versions are not yet very stable.
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Mar 30, 2010
Recently I've been having an issue where every now and then, all of a sudden fedora logs me out and takes me to the login screen.
All my unsaved work is lost and I have to log back in again.
Is there any way to diagnose this problem and figure out how to solve it?
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Jan 17, 2011
I'm using Slackware 13.1.
Whenever I logout of KDE and go back into console mode, the characters at the console screen become unreadable gibberish. Is anyone else having this problem?
I can ctl+alt+F? to work at another console screen, but the ctl+alt+F1 screen remains unreadable until I reboot.
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Jul 13, 2011
I have a problem with garbled graphics after resuming from hibernate or logging out (when the screen blinks and goes back to the display manager). It only occurs when I do either, about half the time. What happens is the edges of everything "bleed" horizontally (left to right) in red and green colors and black text on a white background becomes entirely unreadable (but white text on a black background is readable and just looks a little bolder). If I shut down or restart the computer (softly) when the screen has garbled, then it will freeze and not even the SysRq keys work (I have enabled it in /etc/sysctl.conf). Then the only thing left is to do a hard restart (in which case there's a voice saying "System failed VGA test" before BIOS/GRUB loads) or poweroff. Powering it off and then starting it again works fine. I did a google image search and this is sort of how it looks when it freezes: link
Once the screen has garbled (but only if it hasn't frozen) I can use SysRq to issue S E S I S U O to shut it off and then power it on, and that works: then I get a non-garbled command line after sigterm and it shuts off and starts up properly. If I issue B instead of O (to restart) I get the "System failed VGA test" on boot (but it doesn't freeze when shutting down). Hibernation is easy enough to fix by just turning it off (it's not a laptop so I don't need it anyway), but it still happens sometimes when I log out. So as long as I never change users the system works perfectly and this never happens. I've tried GNOME, Xfce4, OpenBox without any DE, gdm3 and SLiM and the problem persists in all of them.
Some system details:
Debian Squeeze i386 (using only software from the stable main repository)
Kernel: 2.6.32-5-686
Video card: ATI Radeon 9600SE (using the preinstalled open source drivers)
Motherboard: ASUS P4P 800-E
By the way: sometimes when it's in the process of shutting off (when the display hasn't been corrupted), after it kills all graphical applications, I can see that the CLI text gets the garbled look, but at that point the poweroff works without freezing. This is the most similar sounding bug that I could find: [URL]. Unfortunately I can't find a solution to it, and most people who have similar problems seem to get either the garbled graphics or the freezes, but not both. Also: how safe is it to keep shutting off with SysRq to recover from this? Can I get disk errors?
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Mar 28, 2011
When trying to "Leave" the system (either via the small button on the lower right of the taskbar or by right clicking on the Desktop and selecting "Leave") the logout / shutdown / restart screen comes up. I have the "Logout" desktop effect activated, which is supposed to desaturated the background when the Leave screen appears. However, instead of simply greying out the background, the image on the desktop and the rest of the screen also gets slightly distorted, with seemingly random distortion effects cropping up all over the place (e.g. horizontal lines or large blurs).
These distortions are different every time the Leave screen comes up. The Leave screen itself is displayed fine, and apart from the dodgy background I have no other issues with the whole process (the system shuts down or restarts properly according to my choice). I am using the Radeon drivers, and all other desktop effects I have on (Magic lamb, cover switch, present windows, etc) work fine and without a hitch. It's only the Logout effect that seems to glitch. Are the distortions intentionally created by the effect in order to emphasize the focus on the Leave screen?
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Jun 2, 2010
When there is one user, and that person "Logs Out" instead of going to a screen where another user can choose to Log In - the computer goes to a blank screen; No mouse movements, mouse clicks or keys will reactivate. I have to reboot the whole computer.
Is there a way to get the computer to go to a 'switch user screen' when one user chooses to log out?
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Jul 23, 2011
I want to use a script to "scramble" a text file's content using a "algorithm" file with sed. But I can t figure out how to swap characters instead of words within the file. I want to do this for example:
Code:
Algorithm:
a > b
c > e
t > z
Input:
Cat C A T Cats
Output:
ebz e b z ebzs
I can swap out entire words, but this is not practical for my usage. How can the SED syntax be formatted to do this? The commands will be in a text file called by sed with the -f flag.
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Jun 23, 2010
Since the OpenOffice quickstarter effectively disables the shutdown and hibernate buttons under Lucid, I put a command into my .logout to kill the quickstarter:
Code:
kill `ps aux | awk '/soffice.bin/ && (/quickstart/ || /splash-pipe/) {print $2}'`
This works fine if I execute it manually, but in the .logout file it seems to have no effect.
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Mar 9, 2010
Soon after I installed synergy and set up conky and devilspie, I started having problems with the machine loging out automatically.
As soon as I turn the computer on, it auto-logs in, and when I press enter (it seems it works for anything) the machine logs out. After logging back in it's fine however.
/var/log/syslog output:
Code:
(Of course there was log more output, but this is the only thing that seems related. Everything else is about "named" and "dnsmasq")
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May 12, 2010
I am using Lucid and am having a problem logging out of a ssh -X connection after I had forwarded an X window during it. I don't know if this is the proper place to be posting such a problem but I can think of nowhere else. Please feel free to redirect me elsewhere.At google's suggestion, I tried redirecting the pipes but that didn't help. I am not sure this helps but I did a verbose output of an example ssh session. I login, open a window, close it without doing anything, and then attempt to logout. It hangs which forces me to use ^c on it.
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May 28, 2010
My partner and I share the computer, so we are normally both logged in.
When we come to turn the computer off, one of us will log out then the other shuts down (to have a clean shutdown), but when either one of us uses 'Logout' the system just freezes, no response, nothing, have to turn the machine off via power button.
We can 'switch user' fine, and everything else appears ok but log out fails, I did try reporting a bug on this, but seems to have got taken over with people with dual screens / SLI cards, taking it over and its not the same thing.
I get the 'impression' its a graphics driver issue, I'm using the 'recommended' Nvidia driver (am at work and can't remember which version sorry).
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Jan 20, 2011
How do I prevent ubuntu from killing my server daemons on user logout. I have the user irc which I run Unrealircd on but unfortunately I have to be logged into that user in terminal to keep it running, the moment i exit it loses connection in xchat.
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Feb 10, 2011
I'm trying to get a script that will auto logout user at a certain time of day.I have look all over the web. All I have found in my hunting is a script that will auto logout user after "x" amount of idle time.
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Mar 15, 2011
I am logged in as a new user and the desktop is logging out.So how do I keep it up all the time?
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Jul 21, 2011
I'm trying to make a sh script that will kill a program on logout. The issue is, all I know how to do with launching an sh file is making it run on login.
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Jan 19, 2010
I have a fresh install of kubuntu 9.10 which only seems to play the start up and shut down noise. Audio from games, flash videos, and other sources do not appear to work.
I've been searching around, and while there seem to be a few threads on this topic, none have solutions. Where should I begin?
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