Dual Screen, Debian Squeeze, ATI RV516 and Xrandr
From http://forums.debian.net/viewtopic.php?f=6&t=45273:
Hi all, I'm running debian Squeeze at my work. Yesterday debian updated the xserver packages. From this morning my ATI config won't work. aticonfig reports: No supported adapters. Is this a known problem? There's no such thing like roll-back, right? :( My card is: VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series] Hope someone knows a fix! Thanks! Regards, Maurice mauserrifleThe reply:
Re: Ati broken after xserver update Postby sickie » 2009-09-18 12:45 Aticonfig is a part of fglrx driver. Older versions of fglrx don't support the new xorg server while your card isn't supported in newer versions of fglrx (those that support newer X). My recommendation is to uninstall fglrx and use radoen driver which is built in xorg). Check http://en.wikipedia.org/wiki/Fglrx where you'll find versions of fglrx with brief changelogs.
I am in the same boat. And as a result I cannot get dual-screen to work.
So, revert from fglrx to radeon:
Section "Device" Identifier "ATI" Driver "radeon" EndSection Section "Screen" Identifier "Default Screen" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1280x1024" "1280x1024" Virtual 2560 1024 EndSubSection EndSectionand use xrandr:
xrandr -q Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2560 x 1024 DVI-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.0 60.0 800x600 75.0 60.3 640x480 75.0 59.9 720x400 70.1 DVI-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.0 60.0 800x600 75.0 60.3 640x480 75.0 59.9 720x400 70.1so
xrandr --auto --output DVI-0 --mode 1280x1024 --right-of DVI-1
Examples
Set up two monitors, same resolution:
xrandr --auto --output DVI-1 --mode 1280x1024 --right-of DVI-0
Set up two monitors, different resolution:
xrandr --auto --output DVI-0 --mode 1600x1200 xrandr --auto --output DVI-1 --mode 1280x1024 --right-of DVI-0