Public bug reported:
System failed to shutdown or suspend correctly.
ProblemType: KernelOops
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-37-generic 3.16.0-37.51
ProcVersionSignature: Ubuntu 3.16.0-37.51-generic 3.16.7-ckt9
Uname: Linux 3.16.0-37-generic x86_64
Annotation: This
Public bug reported:
Was trying to play audio to my bluetooth headset when the OS locked up.
ProblemType: KernelOops
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-34-generic 3.16.0-34.47
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
I dont think this started happening after an update/upgrade. It was
there in Ubuntu 3.16.0-33.44-generic (3.16.7-ckt7) as well. This is a
new laptop I got less than a month back, as far as I can tell its always
been there.
Log from previous kernel version with error:
Public bug reported:
I periodically get these errors in the log:
[852303.850395] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared
fifo underrun on pipe B
[852303.850399] [drm:ivb_err_int_handler] *ERROR* Pipe B FIFO underrun
[854524.300634] [drm:cpt_set_fifo_underrun_reporting]
Public bug reported:
My graphics/desktop froze randomly. Below is a kernel trace at the time
of the hang:
pr 7 15:35:13 timesysab kernel: [360123.223545] [ cut here
]
Apr 7 15:35:13 timesysab kernel: [360123.223604] WARNING: CPU: 2 PID: 1552 at
I had a couple more instances of the bug. Ubuntu folks, let me know if
you guys care about finding the root cause of the issue. I am willing to
help debug.
Oct 13 20:01:15 Sweet kernel: [95880.715734] [drm:i915_hangcheck_elapsed]
*ERROR* Hangcheck timer elapsed... GPU hung
Oct 13 20:01:15 Sweet
Public bug reported:
Display freeze followed by unusable sluggish display performance.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-53.81-generic 3.2.50
Uname: Linux 3.2.0-53-generic x86_64
.tmp.unity.support.test.0:
Log corresponding to the crash attached.
** Attachment added: CrashLog.txt
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1230017/+attachment/3839243/+files/CrashLog.txt
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Public bug reported:
Issue has happened twice in the week now.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-48.74-generic 3.2.46
Uname: Linux 3.2.0-48-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu17.3
** Summary changed:
- Display freezes, restarts display subsystem and is unusable
+ [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
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Public bug reported:
In the dmesg log a bunch of MTRR related errors are reported:
[0.00] *BAD*gran_size: 64K chunk_size: 32M num_reg: 10
lose cover RAM: -16M
[0.00] *BAD*gran_size: 64K chunk_size: 64M num_reg: 10
lose cover RAM: -16M
[
Public bug reported:
Display freezes once or twice a day (have seen it mostly when using
chrome), mouse can be moved but not able click on anything. Further when
the issue occurs not able to switch to terminal (Ctrl + Alt + F1). Issue
started occurring only after a Ubuntu update (Kernel
This bug has re-appeared recently. Running Ubuntu 12.04.
Apr 7 17:05:23 Sweet kernel: [31293.206494] [drm:i915_hangcheck_elapsed]
*ERROR* Hangcheck timer elapsed... GPU hung
Apr 7 17:05:23 Sweet kernel: [31293.206504] [drm] capturing error event; look
for more information in
Problem is present in Ubuntu 12.04 release.
uname -a
Linux Sweet 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64
x86_64 x86_64 GNU/Linux
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Thanks for finding this Timo. I have 2 display cards on the laptop. I
have switchable setting in the BIOS disabled and have selected the Intel
graphics card under video. However to use the DVI port on the laptop I
need to use the ATI graphics card. So I reboot my laptop and select
video as ATI in
Public bug reported:
Unity used to work before. Not sure what changed (No new applications or
updates were installed) but it stopped working after a reboot. Gives the
below error in dmesg. Tried rebooting several times, always the same
failure. If you need more information please feel free to
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https://bugs.launchpad.net/bugs/822277
Title:
Unity fails to launch
To manage notifications about this bug go to:
Public bug reported:
Display does not update.
Prior to the problem:
1. Everything was working fine, then due to 15 minutes of inactivity display
was in sleep state (auto-Display shutoff).
2. Laptop was running on AC power, and no external peripherals were connected.
Laptop was running without
** Attachment added: dmesg log
https://bugs.launchpad.net/bugs/808441/+attachment/2201082/+files/dmesg.log
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https://bugs.launchpad.net/bugs/808441
Title:
Xorg freeze
To manage
** Attachment added: Xorg 0 log at the time of failure obtained via SSH
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/808441/+attachment/2201107/+files/Xorg.0.log
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** Attachment added: i915_error_state log at the time of failure obtained via
SSH
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/808441/+attachment/2201108/+files/i915_error_state
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Public bug reported:
Machine details:
Lenovo Thinkpad T400
Intel® CoreTM2 Duo processor P8400
Integrated Intel® GMA 4500M HD
Ubuntu 2.6.38-8-generic-pae (32bit)
uname -m i686
Symptoms when the problem occurs:
Display stops responding. There are 3 types of failures noticed:
- Display may randomly
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https://bugs.launchpad.net/bugs/805586
Title:
i915 Hangcheck timer elapsed... GPU hung
To manage notifications about this bug go to:
** Attachment added: i915_error_state log at the time of failure obtained via
SSH
https://bugs.launchpad.net/ubuntu/+bug/805586/+attachment/2190998/+files/i915_error_state
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** Attachment added: dmesg log at the time of failure obtained via SSH
https://bugs.launchpad.net/ubuntu/+bug/805586/+attachment/2191008/+files/dmesg.log
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** Attachment added: Xorg 0 log at the time of failure obtained via SSH
https://bugs.launchpad.net/ubuntu/+bug/805586/+attachment/2191009/+files/Xorg.0.log
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** Attachment added: lspci log
https://bugs.launchpad.net/ubuntu/+bug/805586/+attachment/2191010/+files/lspci.txt
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https://bugs.launchpad.net/bugs/805586
Title:
i915 Hangcheck
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