On Sat, May 22, 2010 at 4:45 PM, Vijay Sankar <vsan...@foretell.ca> wrote: > Jeremy Evans wrote: >> >> After I upgraded to OpenBSD 4.7, my dual head configuration stopped >> working on my Radeon HD 2600 PRO. This has been working for about a >> year and a half with no problems since I got the video card. >> >> I tried various xrandr incantations to get it to work, but no luck. If >> I get the left monitor to work, the right monitor turns off, and vice >> versa. By default, with the xorg.conf including below, the right >> monitor displays output. With the following commands, I can make the >> left monitor display output, but then the right monitor turns off: >> >> xrandr --output DVI-1 --mode 1600x1200 >> xrandr --output DVI-1 --auto >> >> Both commands are needed, as with just the second, there is no change. >> If I run a command such as: >> >> xrandr --output DVI-0 --mode 800x600 >> >> The left monitor stops displaying, and the right monitor starts >> displaying. In both cases, xrandr shows both monitors as displaying, >> and I can move the mouse off one monitor to where the other monitor >> would be. >> >>> From CVS, it looks like the reason is that OpenBSD 4.4-4.6 uses >> >> xf86-video-ati 6.9.0, and OpenBSD 4.7 uses 6.12.2. >> >> I know new video drivers are often tried in snapshots for a few weeks >> before being committed to CVS. Any chance that current snapshots >> contain an updated version of xf86-video-ati? >> >> Any other advice about things to try to get the dual head configuration >> working? >> >> Thanks, >> Jeremy > Hi, > > Not sure whether this is of any use because my hardware is > > vga1 at pci3 dev 0 function 0 "ATI Radeon X1600" rev 0x9e > > but FWIW I have the following: > > SubSection "Display" > Depth 24 > Modes "1920x1080" "1680x1050" "1600x1200" "1280x1024" "1024x768" > Virtual 3840 3840 > EndSubSection > > and that works here. I went through a similar situation when I upgraded and > it took me a while to figure out that 3840 x 3840 worked. > > Vijay
Thanks for the advice, but I get the same results with "Virtual 3840 3840". I also tried commenting out the "Viewport 0 0" line, with no effect. To give some more detail, I'm currently working in single monitor mode with the following lines in my .xinitrc: xrandr --output DVI-0 --off xrandr --output DVI-1 --mode 1600x1200 xrandr --output DVI-1 --mode 1920x1200 The first line turns off output the right monitor, as otherwise windows will still appear there. The second two lines are necessary to get the left monitor to work. With just the first line, nothing is output to either monitor. With just the last two lines, the left monitor works, the right monitor does not, but X11 still thinks the right monitor is connected. Jeremy
