Thank you for your response and helping to make Ubuntu better. This is
a new installation. VGA output to an external 1920x1200 display is
unusably slow (in comparison with 12.04), and so I wondered if the error
message was related to a problem with the i915 graphics subsystem. I
don't know what
Public bug reported:
dmesg reports this error:
Sep 17 16:13:00 onetwoeight kernel: [9.543858]
[drm:i915_stolen_to_physical] *ERROR* conflict detected with stolen
region: [0x7f80 - 0x7ffc]
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-35-generic 3.13.0-35.62
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