I am experiencing the same issue, using a Thinkpad W520, on 16.04.
Two external monitors are connected via DVI.
On boot, all three monitors are mirrored, and correctly show the Ubuntu log.
After logging in, I get the same error messages:
The selected configuration for displays could not be applied
could not set the configuration for CRTC 64
and
GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gsd_2drr_2derror_2dquark.Code2: could not set the configuration for CRTC 64
One of the monitors is disabled. If I enable it using the Unity Settings app, the same error message show up. Tailing -f /var/log/Xorg.0.log while enabling the monitor reveals:
[ 451.532] (II) intel(0): resizing framebuffer to 5440x1672
[ 451.582] Cannot do multiple crtcs without X server dirty tracking 2 interface
[ 451.582] randr: failed to set shadow slave pixmap
[ 451.582] (EE) NOUVEAU(G0): failed to set mode: No space left on device
I am experiencing the same issue, using a Thinkpad W520, on 16.04.
Two external monitors are connected via DVI.
On boot, all three monitors are mirrored, and correctly show the Ubuntu log.
After logging in, I get the same error messages:
The selected configuration for displays could not be applied
could not set the configuration for CRTC 64
and
GDBus.Error: org.gtk. GDBus.UnmappedG Error.Quark. _gsd_2drr_ 2derror_ 2dquark. Code2: could not set the configuration for CRTC 64
One of the monitors is disabled. If I enable it using the Unity Settings app, the same error message show up. Tailing -f /var/log/Xorg.0.log while enabling the monitor reveals:
[ 451.532] (II) intel(0): resizing framebuffer to 5440x1672
[ 451.582] Cannot do multiple crtcs without X server dirty tracking 2 interface
[ 451.582] randr: failed to set shadow slave pixmap
[ 451.582] (EE) NOUVEAU(G0): failed to set mode: No space left on device
This appears to be the same bug as #1597437. It also seems to have been resolved in Fedora: https:/ /bugzilla. redhat. com/show_ bug.cgi? id=1307204.