** Tags added: cscc
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https://bugs.launchpad.net/bugs/1523088
Title:
WARN_ON(!wm_changed) warning and stacktrace in kernel log
To manage notifications about this bug go to:
kamiccolo, a 4.2.x kernel is EOL, and not supported in Ubuntu. For more on
this, please see:
https://wiki.ubuntu.com/Kernel/LTSEnablementStack
https://wiki.ubuntu.com/Releases
However, if you have an issue booting a supported version of Ubuntu, please
file a new report via:
** No longer affects: linux (Ubuntu)
** Project changed: xorg-server => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: High => Undecided
** Changed in: linux (Ubuntu)
Status: Confirmed => New
** Changed in: linux (Ubuntu)
Remote watch: freedesktop.org Bugzilla #89055 =>
Following on 4.2.0-generic (16.04 does not boot at all. At least most of
the time):
[ 601.848346] WARNING: CPU: 0 PID: 50 at
/build/linux-lts-wily-Ejb_ce/linux-lts-wily-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404
skl_update_other_pipe_wm+0x205/0x210 [i915]()
[ 601.848349] WARN_ON(!wm_changed)
And that one goes for darn PICO500 machine >_<
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Title:
WARN_ON(!wm_changed) warning and stacktrace in kernel log
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This issue also affects ubuntu 16.04 as can be seen in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503
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Title:
WARN_ON(!wm_changed)
dan, to confirm, could you please test drm-intel-nightly via
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/ and
advise to the results?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1523088
Title:
WARN_ON(!wm_changed) warning and stacktrace in kernel log
To
I have got hit by this bug as well. It seams to be fixed upstream:
"The series that fixes this bug has now been merged to our drm-intel-nightly
branch. It should land upstream in kernel 4.8."
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** Changed in: xorg-server
Status: Fix Released => Confirmed
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https://bugs.launchpad.net/bugs/1523088
Title:
WARN_ON(!wm_changed) warning and stacktrace in kernel log
To manage
4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
I have the same issue and it comes every 2-5 minutes
Jan 23 11:56:59 zhakal kernel: [ 212.683811] WARNING: CPU: 6 PID: 1446 at
/build/linux-NgsOGa/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404
Lars Magnus Herland, it will help immensely if you filed a new report with the
Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux
Please feel free to subscribe me to it.
For more on why this is helpful, please see
https://wiki.ubuntu.com/ReportingBugs.
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dan, thank you for taking the time to report this bug and helping to make
Ubuntu better. Please execute the following command only once, as it will
automatically gather debugging information, in a terminal:
apport-collect 1523088
** Package changed: xorg-server (Ubuntu) => linux (Ubuntu)
**
** Changed in: xorg-server (Ubuntu)
Importance: Undecided => Medium
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Title:
WARN_ON(!wm_changed) warning and stacktrace in kernel log
To
** Bug watch added: freedesktop.org Bugzilla #89055
https://bugs.freedesktop.org/show_bug.cgi?id=89055
** Also affects: xorg-server via
https://bugs.freedesktop.org/show_bug.cgi?id=89055
Importance: Unknown
Status: Unknown
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Launchpad has imported 24 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=89055.
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will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg-server (Ubuntu)
Status: New => Confirmed
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Title:
Also with kernel 4.3 the problem persists.
[ cut here ]
[Sam Dez 5 23:23:25 2015] WARNING: CPU: 2 PID: 880 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3668
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
[Sam Dez 5 23:23:25 2015] WARN_ON(!wm_changed)
[Sam
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