Ubuntu :: 11.04 Server - Screen Becomes Unreadable After Login
Jul 6, 2011
I've got a new installation of 11.04 server. Everything was apparently working just fine, and then the system hung. I rebooted, and everything looked good up to the login screen. After I typed my password, the screen started looking good, and then got all fuzzy and messed up (nothing was readable). The only way I could get anything back was to reboot. (I am able to work via ssh at the command line, though). As the graphics were fine before (using GDM), and since the GUI looks fine at the login screen, I know the system can do it.
I tried to find information on what might be going wrong, and haven't been able to find anything that fixes the issues. I thought there might besomething in my config, so I tried logging into another account on the system that doesn't have any user-level configuration, and got the same result (the machine's main purpose is to be a mail and file server). So it appears to me that something is happening to the graphics configuration after login when GDM loads. What I need to change?
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May 2, 2011
Just upgraded from Maverick 10.10 to Natty 11.04 and went smoothly even with the new Unity desktop. But when restarted from shutdown, the screen was jumbled and was only just able to restart (the screen jumbled but could just make out the dialog boxes. Then logged in in safe mode. Ever since, have only been able to run in the 'old' Ubuntu without features mode. I have an oldish HP/Compaq nc6000 with 20Gig disk and 675Meg memory. How or what went wrong since it seemed to run fine just after the install.
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Jun 18, 2010
I Installed Ubuntu x64 10.04 on an Hp HDX 16 with Nvidia 9600m video card. I am having an issue that the screen is very dim and it gives one a headache to read it for long periods of time, especially in a bright room. I can adjust the contrast and brightness from the nvidia control panel but I can never get it just right it will either look washed out or just muddy. Everything was fine in Windows 7 a day or so ago. Is this a backlight issue?
Any suggestions on how to proceed?
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Sep 7, 2011
Sometimes when I use aptitude to install or update packages I get an SSH screen such as the below that is mostly unreadable:
Package configuration:
When it happens it looks like there is a selection of options I cannot read, one of which is highlighted, for which I am expected to choose one of. In the above example "+ee-_c¦--e++" was the highlighted option in the list.
How is this fixed to be made readable every time?
When I invoke aptitude without any arguments the screen is readable and looks just like it should.
The SSH window is displayed by my local Windows XP. The remote OS is Debian 5.
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Sep 16, 2015
I'm trying to install Debian 8.2 on my laptop. The "GNU/Linux UEFI Install" screen is fine, but whatever option I choose the screen got stripe like this [URL] .....
I can still use my keyboard, but the screen is unreadable. I was trying install with DVD/Netinst ISO with USBWriter, but it still same. My laptop use ATI 8750M Graphic Card.
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May 2, 2011
Kernel 2.6.21.5, Slackware 12.0. I have a file named juan34. I was sure it was a plain text file so, instead of running first 'file juan34' I directly did 'cat juan34'. The result was everything echoed to the console are the ascii caracters greater than 127 decimal. In other words, the screen is unreadable.
I typed 'exit' but this did not remedy the situation. The login prompt was written with these strange chars. In another console I'm running a program which I estimate will terminate execution in 20 hours or more, so I do not want to reboot the machine.
When I worked in MS-DOS, I had (made) a program that reinitialized the 6845 CRT controller, fixing this problem (for this could also happen under that O.S.). But, if there is a solution for MS-DOS, all the more so there must be one under unix/linux.
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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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May 10, 2015
It started many months ago on wheezy. Occationally I got horizontal stripes on my screen when I used my system for many hours switching from one application to an other. Now, after I installed Jessie this problem hasn't gone away, but got worse. Now I don't need to use my system for hours before I encounter this effect. Different parts of my screen get unreadable without any predictable pattern.
Friens of mine argued this might happen because of a broken RAM chip. I bought my Acer Extensa 5220 in 2008. I'm not sure if it's worth to search for new RAM fitting into this old notebook.
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Apr 12, 2011
My last setup (years ago) ran fluxbox so because it was familiar I installed it as a secondary to xfce right off the bat. I download a lot of different stuff because I like to try out all the apps I can find but somewhere I broke something. I can still run fluxbox fine, but nither the Xubuntu nor Xfce sessions will run now. Last thing I remember changing was pulse audio(removed it for an experiment I was trying with jack audio), not sure if it is connected but when I try to login to xfce the screen goes black, flickers a few times then it brings me back to the login screen.
I tried failsafe but everytime I do my monitor gives me a "frequency out of range" error. I tried purging and reinstalling xubuntu desktop and xfce settings but I am thinking its my xorg config. My laptop is a Toshiba satellite M305D-s4830 with ATI Radeon 3100 mobile graphics card and I am running Xubuntu 10.10. Unfortunately I also broke the screen, so right now I am stuck with an external monitor till I get a new one.
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Apr 18, 2009
I just downloaded Fedora 10, burned the CD, installed the program, etc. Everything went just fine, but after rebooting the screen turns gibberish, totally unreadable. I now it's the video card, NVIDIA but how do I fix it? I installed Fedora 8 which worked just great, no issues. My machine is Intel Core 2 7300, Geforce 9600GT my other machine, is AMD-64 5000, Geforce 9500 GT, same problem happens when trying to install Centos 5.
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Jan 20, 2011
i just installed ubuntu server edition 10.10, install said it was successful, but instead of loading a normal login screen it takes me to a screen that says exactly this: Quote: Ubuntu 10.10 computer name ttyl computer name login: Im wondering if this is normal or did the install go wrong somewhere, and not report it and if there is a way to fix it.
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Feb 25, 2011
The problem come after i kill the Xorg using the kill command,and the screen turns to black without anything so that i can do nothing. The problem goes on after reboot
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Sep 17, 2010
I have installed VirtualBox and setup a Windows Vista host, initially with a .vdi of 10gb. That filled up quickly, so I added another 20gb secondary partition, after first trying to allocate a .vdi to a SCSI controller. Configured the drive in Windows (Computer Management), and all seemed ok. I shutdown VB, and rebooted my Linux host (openSuse 11.3). Now I keep bouncing back to the login screen, and can't login to Linux KDE, but can login to a console.I do have the following info:
/etc/fstab:
/dev/dis/by-id/ata-ST9250410ASG_5VG0B5VS-part5 swap swap defaults 0 0
/dev/dis/by-id/ata-ST9250410ASG_5VG0B5VS-part6 / ext4 acl,user_xattr 1 1
[code]....
I did see a message before, that I don't see anymore, that said it could not start NFS services due to missing entry in fstab. Another I'm seeing now is it couldn't start the avahi-daemon, no space left on device. This is odd, since I have a 200GB drive, with half of it left, only max 30GB set to VB. Here's my df -k output:
/dev/sda6 Use% is 100%
devtmpfs Use% is 1%
tmpfs Use% is 1%
/dev/sda7 Use% is 46%
So root "/" is mounted on /dev/sda6, which looks like it could be a problem, but why would this suddenly be a problem after working with VirtualBox? Could this be a matter of just freeing up space on /dev/sda6? Like the /tmp folder that's under "/"?
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Dec 22, 2008
I have a desktop running Hardy and till friday it was running good. Today is monday and I guess it has got monday blues like I get every monday at work.Today I tried to start it as usual but it just refused to go further than login screen. I just can not login. It just hangs it there. I do not know what has gone wrong. I did not change anything since friday and no one else uses it. Theres nothing in logs that could give any idea. It just hangs without any reason and is still on the login screen for ever. It does ask my username and password but then it does not go further.But to my surprise I tried logging in with root and it gave me expected error that system administrator is not allowed to login from gnome.
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Nov 3, 2010
I have x11vnc server set up on my desktop PC. I can boot the computer and connect at the login screen if I want to. I can login to my computer as usual. But after about 1 minute of logging in, the computer logs off as if pressing Ctrl+Alt+Backspace and returns me to the login screen. This cycle repeats when I login and I have to kill the x11vnc process or remove the command from /etc/gdm/Init/Default.Have tried so many things now but the end result is the same. I have Ubuntu 10.10 fully updated and x11vnc 9.10-1 from the default repos. I am using the following command in the /etc/gdm/Init/Default file:
Code:
/usr/bin/x11vnc -rfbauth ~/.vnc/passwd -rfbport 5901 -display :0 -forever -bg
I don't think it matters now whether I add KillInitClients=false into /etc/gdm/gdm.conf-custom or /etc/gdm/gdm.conf because of the x11vnc version I have. The manual says its not really needed. But I have tried this too with no better luck.The computer will still log me out after about a minute of logging in. It can be between 1 min to 1.5 mins.Running out of ideas and have tried the -noxfixes and -reopen commands.
Why does x11vnc crash out (or it may be gdm or x server?) after about a minute of logging in? If I am currently viewing my desktop through VNC viewer on another computer, it will still crash out after 1 min of log in, and lose the connection. I can reconnect through VNC again but I have to log back in to the remote computer and it will just log out after another minute.At last, in 2 days I have finally solved it. As simple as creating my own version. The x11vnc 9.10-1 version my default Ubuntu 10.10 repos is buggy. Here's my fix (I used this site):
1. Downloaded latest x11vnc dev build from above site (x11vnc-0.9.13-dev.tar.gz at time of posting)
2. Extract it
3. Open Terminal > sudo -s > enter admin password
4. cd LocationOfExtracted folder
[code]...
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Apr 29, 2011
i just tried to install Ubuntu 11.04 (x86) on my Dell Inspiron 1520 Laptop (with a Nvidia 8600M GT graphics card) with Wubi. A normal installation try resulted in an unreadable screen after boot (see attachment). I then managed to get the installation going by modifiing the boot options like shown in this HowTo: [URL] After the installation Wubi automatically rebooted the system without any prompt, so that i couldn't install the proper Nvidia drivers (is there a way to prevent wubi from doing that?) like described in the HowTo. After the reboot the graphics were messed up again.
Boot parameters like "text" "single" or vga=xxx didn't work, adding nomodest and nouveau.modset again didn't help either (I think "text" acutally brings up the console, but i just see an unreadable "blacker" screen than normal). Is there an boot option for grub to disable all nvidia related drivers and the graphical login manager and just show a text based console? Or force the gfx driver to be the same as in the installation process (which was perfect...native resolution, no graphical errors until the reboot) (i tried xforcevesa without any luck; nosplash and removing quiet/splash does work - the bootup process is readable, but as soon as the login manager starts its messed up again)
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Jun 9, 2011
Basically, this has required me to force restart my computer whenever something causes my computer to freeze: graphics driver or gnome, or the X server, I'm a newbie so I don't really know what the problem is.
I looked into the /dev folder today to find nvidia0 (I saw an error message once that said that it couldn't open it...), and there were TONS of files marked as unreadable/unknown file type. There were files called tty up to 63, ram up to 15, and vcsa up to vcsa7...etc. I saw this thread when I googled my problem, and I'm worried about the effect all these force restarts are having on my computer. I can't imagine this is a good thing, how do I stop/fix this?
Come to think of it, I didn't start seeing the 'blue mist' mentioned in my other thread until I force restarted the graphically demanding program that froze everything. Could this be the source of my problem?
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Jan 12, 2011
I am setting up a CentOS server that has no screen connected, and only has 2 Tesla cards. I have created a minimal xorg.conf and xinitrc file that doesn't load mouse or keyboard, and only creates two screens, one for each card at 320x200x24 bit. This is so I don't waste VRAM on a framebuffer I can't see.
I modified the xinitrc to just load tdm and nothing else as GNOME is a RAM hog. I am then using this setup to render stuff offscreen using OpenGL into FBOs which I read back to CPU and process. Currently for development I just run startx& when I login. I now want to know how to set x server to start automatically at boot. The CentOS docs say that it will try to load the GNOME login manager. The thing is that I don't want a login manager as it is useless as I login remotely via SSH.So:
1 - how to enable automatic x server in CentOS (im used to Ubuntu so not sure how to do this on Red Hat variants)
2 - leave x server running without starting login manager
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Aug 18, 2010
I have used Ubuntu since 7-4; I now have 10.4. However, in the last week I have been taken to the login screen three times. This could be potentially calamitous. Ctrl+Alt +Backspace have by default been disable since 9-4. There is no way I am pressing atl+Prtscr +K. I wonder if there is a new zap command in 10.4, and if so, how to disable it. I have never found the need to go back back to the login window. I am generally using the command line when doing this.
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Oct 10, 2010
I recently powered up my netbook... Selected my user log in, entered my password, and after a couple seconds I briefly see what looks to be the console and am returned to the login splash screen... I can Ctrl+Alt+F2 to get to the console and log in... but that is as far as I can get. This is the case for Gnome, Remix, and Remix 2D.
I can sudo apt-get (update, upgrade, etc) as well. It is the right password because if I type in a wrong one it presents an authentication failure dialog box.
How can I fix my log in screen and get to my desktop? I am Currently running 10.04.... waiting to get 10.10
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Aug 4, 2011
yesterday i installed slim login manager on my computer (eee pc 1018p, ubuntu 11.04), and now it cannot get passed the ubuntu loading screen (with orange dots underneath) when booting. i tried booting into recovery mode and that didn't work either. i also left the computer trying to boot overnight and that didn't work.
basically, during this loading screen that should eventually bring you to the login screen, i can alt+tab to see the progress of the load. the progress is stuck on
Is there anything I can do from grub to remove slim?or, is there any way I can access my ubuntu partition and save all my files?
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Apr 15, 2011
I just bought this desktop from my friend and it runs win 7 and ubuntu 10.04. it worked very well the first two days until I changed the hostname of the system.
I did like: hostname myNewName
And everything worked fine. The problem now is when I start ubuntu and and reach username and password screen , I enter my password to login the screen becomes black and return me again to the screen where I put my password again. If I entered wrong password , the system message stating wrong password. On the other hand, when I try to run ubuntu from live-cd I can login easily and access my account.
My friend told me he removed Naultius package and reinstall it for some reason before he gave it to me. Note windows 7 is working properly.
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Jun 5, 2010
I have just did an upgrade from 9.04 to 9.10. I am planning to go to 10.04 . After the upgrade everything was ok but I noticed the GRUB was still legacy. So I updated my GRUB to GRUB2. Now when I boot, after entering my logon-id and password, it just brings me back to the login-id screen (to logon on). Any indication of what is wrong and how I should fix this ?
I have no encryptions. [added comments] Currently reading thread about login loop bug with 9.10 Followed instructions about possible missing pre-release update but even if it did do updates, I am still login screen looping. Doing additional researches until someone answers with the fix.
did :
CTRL + ALT + F1 switch to one virtual console
sudo service gdm stop
[Code]...
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Sep 28, 2010
When I try to login with my username, the one I created when I installed the OS, it seems to try to login but almost immediately kicks back to the login screen. No authentication error it just seems to just logout? The only change I made since last successful login was to add ". .alias" to the .profile file - the only entries in the .alias file are comments and "alias" commands. I have one other username but it is not in the sudo's list of users so I can not change anything in the master login.
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Feb 22, 2010
I have program that work like Fedora Firstboot it's run only one time after finish installation. I have two questions to ask.
1. How can I start this application before gdm start (login screen or auto login)
2. How can I start this application in fix display resolution (800x600)
My method now is
(This is a part of script , this script execute from /etc/init.d/myfirstboot , I create symlink to /etc/rc2.d/S1myfirstboot for start it before anything)
gdm-stop # first time I use /etc/init.d/gdm stop
DISPLAY=:1
export DISPLAY
/usr/bin/Xorg :1 &
[Code]...
I don't understand why first time firstboot start the system will auto loging in but not complete yet and then my script is start and it's work does not fine I think that is another user is already login , but if I re run my firstboot again and again (by setting something that can revoke my firstboot and restart) it's work before auto login and every things is ok!
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Apr 9, 2011
I like the server login information that gets displayed when you login to a 10.04 server. It lists disk usage, CPU usage, Temperature etc...
Unfortunately I had problems installing 10.04 from a USB. At the end of the process the master boot record was stored on the USB and not the hard disk.
But now when I login to my server I don't get the server information.
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Nov 17, 2009
My OpenSUSE 11.2 is working fine as samba server, no problems, but I have a problem with KDM.My default init runlevel is set to 5 and every time I try to login at KDM (KDE4), the monitor goes black and returns to the login screen.If I hit Ctrl+Alt+F1 to go to console and start /usr/sbin/console-kit-daemon manually, press Ctrl+Alt+F7 to return to KDM login, everything is fine.What do I have to do to fix this issue?
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Jun 18, 2010
been using 11.2 with KDE on a Sony laptop since 11.2 was released always ran perfect suddenly I can't login, I get to the login screen type in password it begins to load my desktop, then fails and dumps me back to the login screen I can login as root, all my stuff is there (under /home/me) I tried changing my password, no luck I went to run level 3 and there I can login just fine seems to be something with my KDE profile
any ideas where I might find some error messages telling me what's going on?
this seemed to happen when I was running "blender" and making the machine do some heavy number crunching, it actually locked up.
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Jun 3, 2011
i am having a boot problem with opensuse.i installed a theme named suse-elegant under personal settings(configure desktop)-system administration-login screen.
i had also added vbox users(i ticked vboxusers) under yast-security and users-user and group management-edit-details to make virtual box work.
i want to check that installed theme so i restarted my laptop.after the restart opensuse taking too long time to boot
note:the login theme also not working.
after the boot i restored defaults in login screen themes.it is also not working.
i don't know which cause this problem(vboxusers or login theme).i am also seeing a root user has been added in my login area.i tried opensuse failsafe also.
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Dec 8, 2009
I want, when I boot up, to load and log-in automatically a default user. I get a login in screen with the option to login as root, I do not want this. How do disable the option to login to X as root and just load as me/default user?
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