** Changed in: linux (Ubuntu Quantal)
Status: Fix Committed => In Progress
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https://bugs.launchpad.net/bugs/1138700
Title:
Using eDP leaves kernel log with "Timed out waiting for DP idle
patterns" messages
Status in HWE Next Project:
Fix Released
Status in The Linux Kernel:
Fix Released
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Quantal:
In Progress
Status in “linux” source package in Raring:
New
Bug description:
[Impact]
* This confuses end users. They think that this is a relevant message
instead of an
unimportant accident to the eDP
[Test Case]
* Use an eDP haswell system
* See this message in dmesg
[Regression Potential]
* Low. This patch just skips a port check on eDP machines
* It has already been tested on eDP machines
[Other Info]
* private bug 1097143
[Original message]
eDP on haswell graphics puts some stuff in dmsg that is scary to
users. Worse, these messages are displayed on suspend/resume, and
because we don't have vt-switchless resume support in ubuntu yet, when
the graphics don't work it seems like these messages are the culprit.
Dmesg:
[11577.928164] [drm:intel_dp_set_link_train] *ERROR* Timed out waiting for DP
idle patterns
[11577.928167] [drm:i915_write32] *ERROR* Unknown unclaimed register before
writing to 64040
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