Ubuntu :: Multi User Logout Freezes With Black Screen
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.
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.
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.
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.
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.
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?
i recently installed 10.04 after hearing from a colleague that it was highly recommended, however after install, all i get is a black screen with various colors pixels at the tope of the screen. I've been trying to find a resolution, but have nevertheless come up empty, i really need to info that is/was on my desktop (passwords & such).
I'm using ubuntu 10.04 and it worked fine but recently I'm getting the following message - (process:343) GLib_Warning** : getpwuid_r(): failed due to unknown user id(0).
This message comes with a black screen and then no key stroke works and everything totally freezes. then I've to force restart using power switch. This message appears when I'm using internet. I'm using pppoe broadband connection. Without internet it works fine. I'm getting the same prob in Linux Mint 9. I've googled for this problem and almost everywhere it is said that this message appears in booting time and after a few moments everything becomes quite ok but my problem doesn't match with them. I don't get this message in booting time. I get this message when I'm on internet.
I installed Slackware 13.1 a little bit ago, played around with it, performed an upgrade with Slackpkg, messed around with some settings, and chose a new theme. I had set the runlevel to 4 and when I rebooted after choosing a new login theme the screen just went black at the point where the login prompt should have appeared. I couldn't even get into the CLI. Using a LiveCD, I set the run level to 3 again and was able to log in, but when I try to start X the screen goes black and freezes again, so I believe my new login theme is the culprit. Is there a way to change to the default login theme from the CLI?
Tried the DVD install for 10. Install went fine other than it take for freakin ever, but after an 1 hour install, the update wanted to install 1675 or so updates. I let those updates install. 5 hours later the updates were done. Rebooted and now it freezes at a blank screen right after the 3 scrolling bars. System is older AMD 3000+, 1 GIG RAM with NVidia 5700 video card.
I did try and search some. But the only thing I could find was something about editing my grub file for a scan=sync setting (the information was basically gibberish to me. No clue what it was talking about or how I would edit a file on a system that won't boot). I tried to recover mode off the live CD. It had some options that said you could type Linux command line arguments, but whenever it got to the sysimage it says Linux isn't a command.
The screen of my years-old HP laptop (running Natty) freezes and eventually turns black. Ctrl-Alt-F# works to switch to the terminals. My fan is even louder than usual. I spend some time fooling around with ps and kill and shut down some of the most resource-consuming processes, which quiets the fan a bit, but tty7 still shows a black screen except for my mouse pointer.
I finally decide to shut it down altogether, but then I think to myself, "Self, you've used the power switch to shut down before in this situation, but shouldn't there be a more proper way to do it in the terminal?" So I try shutdown, I have trouble with it, it proceeds to get hopelessly tangled up, and it looks like it's frozen up in mid-restart when I throw up my hands and decide to go for the old power-switch-for-five-seconds method after all. Now when I start the computer and select Ubuntu from GRUB, I get this:
I burnt the Ubuntu 9.10 ISO to CD and installed on a freshly nuked Dell 2350. It is pentium 4 at 1.8 MHZ with 512 RAM. Just a spare machine I have sitting there. Install went fine, restarted box, boot from hard drive. I get the little white Ubuntu symbol on a black screen and then a black screen with un-occupied white tool bars at top and bottom of screen and a functional mouse pointer, then nothing. It freezes there.
If I restart by holding the power switch in it occasionally shows multiple CPU overtemp messages and freezes with totally black screen. I can run the CD live and everything works like a champ. I'm going to like Ubuntu once I have this sorted out. If I boot from CD and choose the run from first hard drive option, everything loads and works fine. I was able to remove CD, update and save preferences, etc..
On one occasion, I was able to restart and boot from hard drive and it worked fine but usually it freezes at previously mentioned black screen with white bars top and bottom with mouse pointer. Please excuse my ignorance as I have very little knowledge of the inside workings of computers. I didn't even know about burning ISO's or changing boot orders until reading online. For what it's worth, the computer worked fine with no known hardware problems when it was running XP. It also is completely stock with no mods or added/replaced hardware.
I keep starting up the computer and I'm not able to get far (although it's not always at the same time) before my screen will go black, except it shows the mouse/cursor - but it's frozen, and then the caps-lock light starts blinking and I can't do anything or get it to recover. It ONLY occurs after I log in to wireless network. Using a wired connection, this problem never occurs.How do I stop this and diagnose this?I've tried, in the boot-startup to choose an older kernel version, but the same thing occurs! And this was working for months and now is not.
Anyone successfully using VNC client on a Mac to control a Debian server?I have the vncserver setup on the Debian machine properly. But I'm having problems connecting to it from both a PowerMac running Tiger and a MacBookPro running leopard.I can connect no problem from a machine running Slack12.2, have not setup port forwarding on my router to connect remotely yet.My Debian machine is running the latest stable release of squeeze with KDE4.I originally tried this with RealVNC Enterprise for OSX but I'm not gonna buy it so I need another alternative after the 30 day trial ends as they have no free version for OSX. The situation is that I do freelance graphic design on the PowerMac with Cinema4D and Photoshop so I spend most of my time on that machine which is located in my home studio in my attic. Aside from the MacBook and a Dell desktop(family machine)all my other machines and network hardware are in the basement. So to go from the attic to the basement everytime I need to do something on another machine is not practical, and the only other machine I need to access on a regular basis is the Debian box in the basement, this makes the most sense.
I also have a 14 year old living in the house and he's fascinated by all this and will meddle in anything he gets the chance to so all the Linux machines and network hardware need to be behind lock and key.
I've searched the web and these forums and I don't seem be the only one with this problem yet I couldn't find a cure for it; 2 users are logged in, one of them logs out and the screen goes blank. Nothing works except shutting off the computer manually.Does anyone know if a cure has been found for this problem by now?
Login as myself, girlfriend wants to use her login to check something, all good.I switch back to myself, I get a black screen with just my cursor. Most annoying. I have to ctrl-alt-f1 to reboot. I've tried killing various process from the term, but nada. I've also tried uninstalling gnome-screensaver as was mentioned in another thread when I searched, but no joy there so far.
When I login to my machine I can see a BLACK screen and my mouse pointer. This is not happening with other users.Few days ago when I tried login to my machine I noticed this. I can access ssh session and do stuff there but some time I need GUI.I can login fine using other users. This is only happening with one specific user.I have just noticed that if I try loggin with the same user which have issues using NX client it shows us a BLACK screen, then if I open xwin then I can see three new windows top panel, bottom panel and Desktop.
When I click logout under the user menu (top right), the confirmation dialogue appears, and I can click Logout. the dialogue disappears and it starts to logout normally... then it just stops. it freezes once the top toolbar disappears. my tint2 bar stays visable, as well as my desktop background, and i can move my cursor around, but it wont respond to my keyboard. After just letting it stay like that for a few minutes, nothing changes, it doesn't even dim the screen or go to sleep, it just sits there.
I can shutdown and switch users just fine, just not logout.
Lenovo X200 notebook, 64bit maverick, external monitor connected through DisplayPort, fast SSD drive, encrypted homeI'm almost positive these issues were non existent after installing 10.10RC, but I'm not 100% sure. Maybe I will install it again to check it outAnyway, when I try to suspend/restart/shutdown/logout the system often freezes, showing the console with the similar output:I know this guy is running Ubuntu in VM, but I have very similar ouput, except the last usplash line.But the first line I always have in the output is the infamousQuote:GLIb-WARNING **: getpwid_r(): failed due to unknown user id (0)On a very rare occassion, the system hanged while booting (showing the above glib line as well. But that's quite rare, so I'm not that concerned.
Now, sometimes it does respond to ctrl+alt+delete after freezing, and after I hit this combination, another line appears (from memory):Quote:Init: rc main process killed by TERM signalChecking for running unattended-upgradesBut that's it, I cannot do anything else, only hard reset, which is especially painful when I suspend in the middle of work...There is no interesting information in the logs - a few messages in the kern.log, but nothing I think would show the culpritEDIT: other than that, the machine is very stable and I have no issues with it. It also worked perfectly on lucid 32bit.
I've read some past issues with this and was wondering if anyone else has issues with F12 / F13.
When I logout of gnome or kde on a fresh install of Fedora 13 the panels disapear but I never receive the log on window. I cannot switch to command either the screen is locked completely.
I havn't run updates or anything, the install is nearly out of box except for the installation of kde.. The issue existed before I installed kde, I was hoping it didn't have this issue lol. fat chance of that..
I can't log into my normal user account anymore, though I can log in with root without any problem. When I enter my normal user name and password, the screen blinks, a black page appears and after a couple of seconds I get the login screen again. I deleted /tmp files but no changes. I tried to login using command mode. So I hit Ctrl-Alt-F1 and log into root in command mode, then ran init3, then switched user to my normal user and ran startx. It worked and I logged into my normal account, but I can not do this process every time. So, what is the problem? How can I solve this problem? I used to work with my normal user flawlessly. I installed a bunch of software and also copied some folders to my home directory, but I don't know whether these activities caused the problem or not. I'm using KDE4 under openSUSE 11.2.
I was messing around with the screen orientation and thought it would be funny to orient it sideways. Big mistake The screen went black.I can force a shutdown, login and I get the same black screen. I tried hooking up an external monitor and the monitor showed no input so I'm guessing my laptop doesn't have that capability with Fedora.This is my main computer.
-memory usage (mb/user) -cpu usage -processes (amount and no same process multiply) -connections (amount of connections (to specific host)) -bandwidth (kbps/user and even owerall for regular users) -disk usage -available commands
My normal day to day user can't shutdown, restart, logout, etc...It just doesn't do anything at all when I try. This wasn't the case three days ago, just fresh installed and seeing the same problem (so it must be some setting saved in my home folder which wasn't wiped).
i have noticed that if vista is not the active partition, hybernate does not work. it just goes black and then back to the user icon screen to log back in. another "slight" problem was that i was not able to apply a service pack. after restoring vistas dominance i was able to install the pack. is there any other work arounds for hybernate? even though you might not be interested in cleaning up after microsoft.
If, as root, I 'Leave' --> 'Logout', I get the KDE login screen.If, as user rob, I 'Leave' --> 'Logout', I get a black screen from which I must power off to recover, and I use the term very loosely. User rob is a member of the 'power' group.
I have installed VirtualBox as per the instructions on this site, and the kernel module compiled without problem, however when I start it, it causes the user to logout!
I am using the nvidia module from the ATrpms repo if that has any bearing on the problem.
Has anyone else seen this issue?
Details: CentOS 5.5 x86_64 running on a Dell Studio XPS 435MT with i7 920 and 6GB of RAM VirtualBox 4.0.2 from virtualbox repo. nvidia driver 260.
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
I can't seem to get Ubuntu to run on my old Dell Dimension 2300. It boots to a purple screen then it goes to a black screen with a load of writing nothing else happens after this screen. [URL] Could someone advise how I can get it to work?
I downloaded the ADT bundle for android development and whenever I try to boot an Android Device Emulator either from the eclipse version included in the bundle or from the command line, everything freezes for 1 minute and then a logout from my current Debian user session occurs. In other words, the Debian login screen appears again and all my previously opened applications get lost.
Not even when I run from the command line I manage to fetch any error notification.
I use: - Debian Wheezy - kernel 3.2.0-4-686-pae - jdk1.7.0_09
I tried ./emulator @mydevname -no-boot-anim -show-kernel -shell but I get the same result: the debian user session restarts
