Greetings - 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? -Carl
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