Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Raring)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1138787
Title:
"Unknown unclaimed register" messages in haswell
Status in The Linux Kernel:
Fix Released
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Quantal:
Fix Released
Status in “linux” source package in Raring:
Confirmed
Bug description:
[Impact]
There are a number of troubling "Unknown unclaimed register" messages that
get put to dmesg with default log level on haswell machines. Some of these are
erroneous, for example indicative of untidy bios.
This bug is basically a tracker bug for
https://bugs.freedesktop.org/58897
first round of patches is here:
http://lists.freedesktop.org/archives/intel-
gfx/2013-February/thread.html#24866
..but instead of backporting those it makes more sense to just silence
the error messages, since they are harmless.
[Test case]
just use the machine for a while, these messages appear for instance when
suspending/resuming when the VT is shown for a while
[Regression potential]
none really, it just changes the severity of the messages so that they are
not shown by default
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