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Message #139239
[Bug 1381013] Re: second monitor attached to second gpu fails to start
Sergey Schwartz, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect -p xorg 1381013
Please ensure you have the package xdiagnose installed, and that you
click the Yes button for attaching additional debugging information.
When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.
** Package changed: xserver-xorg-video-ati (Ubuntu) => xorg (Ubuntu)
** Changed in: xorg (Ubuntu)
Importance: Undecided => Low
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1381013
Title:
second monitor attached to second gpu fails to start
Status in xorg package in Ubuntu:
Incomplete
Bug description:
Gents,
I've got a dual gpu(amd r7 250x) rig with 4 monitors attached to the
first one and 2 monitors attached to the second gpu. All monitors have
the same resolution 1920x1080. I've installed Kubuntu 14.10 beta2 and
have 5 of the monitors working just fine under single Screen0, so I
can drag windows across monitors. All monitors were identified
correctly by xrandr, but for some reason the 6th monitor fails to
start.
I can see an error message in /var/log/Xorg.0.log
[ 295.327] Cannot do multiple crtcs without X server dirty tracking 2 interface
[ 295.327] (EE) RADEON(G0): failed to set mode: No space left on device(II) RADEON(0): EDID vendor "ACI", prod id 10228
Please check attached xrandr.out, lspci.out and Xorg.0.log.
Cheers,
Sergey
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References