Public bug reported:
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
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "xrandr"
https://bugs.launchpad.net/bugs/1381013/+attachment/4235554/+files/xrandr.out
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https://bugs.launchpad.net/bugs/1381013
Title:
second monitor attached to second gpu fails to start
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