On Thu, 9 May 2013 10:21:03 +1000, Dave Airlie <[email protected]> wrote: >> >> I have two 6450 cards in my Ubuntu 13.04 system with three monitors. This >> is >> a recent install with no binary drivers installed and no additional X >> ppa's >> installed. I can get X to display output on the primary monitor, and I >> can >> see all three in xrandr: >> >> Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384 >> HDMI-0 disconnected (normal left inverted right x axis y axis) >> DVI-0 connected 2560x1440+0+0 (normal left inverted right x axis y axis) >> 597mm x 336mm >> 2560x1440 60.0*+ >> VGA-0 disconnected (normal left inverted right x axis y axis) >> HDMI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) >> 475mm x 267mm >> 1920x1080 60.0*+ >> 1280x1024 75.0 60.0 >> 1152x864 75.0 >> 1024x768 75.1 60.0 >> 800x600 75.0 60.3 >> 640x480 75.0 60.0 >> 720x400 70.1 >> DVI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) >> 475mm x 267mm >> 1920x1080 60.0*+ >> 1280x1024 75.0 60.0 >> 1152x864 75.0 >> 1024x768 75.1 60.0 >> 800x600 75.0 60.3 >> 640x480 75.0 60.0 >> 720x400 70.1 >> VGA-1 disconnected (normal left inverted right x axis y axis) >> >> >> The second and third monitor are on (out of power save mode) but show no >> input. However, XFCE seems to detect them as I have two wallpapers >> stacked >> on top of each other, one at the main monitor's 2560x1440 resolution and >> one >> at a 1920x1080 resolution (see >> http://edolnx-public.objects.dreamhost.com/Screenshot%20-%2005072013%20-%2009_10_02%20AM.png >> ). Attempting to make any changes with xrandr causes X to crash with a >> SIGSEGV. Here's a log: http://paste.ubuntu.com/5640585/ Any ideas? > > You probably need to setup an xorg.conf like you always have before > for dual-card setups like that. > > It might be possible to make it work better if you plug two monitors > into the first card and one into second, > you'll be using GPU offload, so the second GPU won't be doing anything > more than displaying what the first > is showing. > > Dave.
I've tried creating a basic config for multiple monitors, and now X crashes on startup. The config: http://paste.ubuntu.com/5646972/ The log: http://paste.ubuntu.com/5646975/ I thought it may be GLX, so I tried disabling that but got the same error. I also tried two displays on the primary card. That created output on two displays, but using xrandr still caused a crash of X. The monitor on the second card still had no output. Any other thoughts? I've tried ATI and nVidia cards, and both yield similar results. I realize this is the ati driver list, but it may be an interesting data point. -Carl _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
