Ubuntu
xserver-xorg-video-ati package

fglrx drivers do not work after upgrading to Ubuntu 10:10

Asked by Bryan Smith

I have a system using a Saphire HD5750 video card to drive twin monitors. After upgrading to Ubuntu 10.10 the monitors would only display a duplicate of each other and not a twin view. The system was giving an error like resolution not supported if I choose dual view and logged out and in again.

To resolve the problem I attempted to uninstalled the fglrx drivers in the belief that the default drivers would work in low resolution mode. (This seemed to work in earlier versions of Ubuntu) Unfortunately the system now wont now boot up normally. It just goes to a blank screen.

From the grub 1.98 menu I can choose recovery mode. From here "Run in failsafe graphic mode" takes me to a blank screen. I can choose "Drop to root shell prompt with networking" and get a root command prompt.

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actionparsnip (andrew-woodhead666) said : 		#1

www.ubuntugeek.com/how-to-fix-ubuntu-10-04-lts-lucid-blank-screen-at-startup.html

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Bryan Smith (bryan-smith) said : 		#2

I tried solution 1 - It took me to a linux command prompt not to the gui. Option 2 did not make sense. For option 3 there a file called /etc/X11/xorg.con on my hard disk, i renamed it and then booted from Ubuntu live cd. Bit could not find similar file on file system after booting up.

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Bryan Smith (bryan-smith) said : 		#3

I attempted to follow instructions on page: https://wiki.ubuntu.com/X/Troubleshooting/FglrxInteferesWithRadeonDriver

i was able to complete these instructions:

  sudo /usr/share/ati/fglrx-uninstall.sh # (if it exists)
  sudo apt-get remove --purge fglrx*
  sudo apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon
  sudo apt-get install xserver-xorg-video-ati

However when i tried the instruction:

  sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core

The system could not find: libgl1-mesa-glx libgl1-mesa-dri

The system now boots however when i choose System/Administration/Additional Drivers the system responds "No proprietry drivers are in use on this system".

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Bryan Smith (bryan-smith) said : 		#4

It would now seem that in version 10.10 of Ubuntu I don't need special video drivers to run twin monitors. When i chose System/Preferences/Monitors the "Monitor preferences" dialog "realized" that i had two "Samsung Electric Company 23" monitors. I was able to uncheck "Same image in all monitors" and i got the dual view. Seems like problem is solved.