Tuesday 17 June 2008

RHEL5/CentOS5 Graphics Problems on HP ML115/ML150

Well, thought I would note this here for others' use - steps required to get RHEL5/CentOS5 to give you a usable display (without the corruption on the bottom 1/10th of the screen).

  • At the gdm login prompt, drop to a console session: Ctrl-Alt-F1

  • log in and su to root: su -

  • stop the graphical login screen by switching to runlevel 3: telinit 3

  • take a backup of the xorg.conf file:
    cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup"

  • ask X to create a config for us: X -configure

  • copy this config to our live xorg.conf, but force the vesa driver:

    sed 's/mga/vesa/' /root/xorg.conf.new > /etc/X11/xorg.conf

  • edit the generated xorg.conf for keyboard settings etc with your favourite console editor

  • test the config: startx

  • assuming all is ok, System -> Log Out or: Ctrl-Alt-Backspace

  • return to runlevel 5: telinit 5

  • Don't forget to log out from VT1 Ctrl-Alt-F1


Hope this helps someone - its not a fix, but will at least give you a usable X session until a better solution presents itself.


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