Yuri Ribeiro Sucupira, thank you for reporting this and helping make
Ubuntu better.
Please execute the following command only once, as it will automatically gather
debugging information, in a terminal:
apport-collect 1520040
** Package changed: linux-lts-vivid (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1520040
Title:
[drm:gen8_irq_handler [i915_bpo]] *ERROR* The master control interrupt
lied (SDE)!
Status in linux package in Ubuntu:
Incomplete
Bug description:
Device: notebook Dell Inspiron 5548
Operating system: 64-bit XUbuntu Linux 14.04 LTS
Processor: Intel Core i7-5500U
Kernel: 3.19.0-33-generic #38~14.04.1-Ubuntu SMP x86_64
Video: dual chip. These are the two display controllers:
- Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260] display
controller 33000000Hz (requires kernel module / device driver "fglrx"); and
- Intel Corporation Broadwell-U Integrated Graphics VGA compatible controller
33000000Hz (requires kernel module / device driver "i915").
Problem: my notebook's operating system is switching to runlevel 0
(power off) randomly, subtly and thus unexpectedly. And if I 'cat
/var/log/kern.log |grep -i i915' I get a lot of "[drm:gen8_irq_handler
[i915_bpo]] *ERROR* The master control interrupt lied (SDE)!"
messages. I'm under the impression that either the kernel or the
kernel module "i915_bpo" is buggy.
My notebook's problem can't be related to overheating, because it's a
brand-new notebook (less than 1 month old) and I've already monitored
its temperature parameters: nothing abnormal is happening. Also, I'm
using a cooling laptop base/pad.
Other kernels I've tested, with which the same issue happens:
- 3.19.0-18-generic (kernel module: i915_bpo)
- 3.19.0-23-generic (kernel module: i915_bpo)
- 3.19.0-28-generic (kernel module: i915_bpo)
- 4.2.0-18-generic (kernel module: i915)
Temporary workaround: I downgraded to kernel "3.13.0-36-generic",
which isn't buggy with its "i915_bdw.ko" (version 3.0) kernel object
(module). Full path for this module:
/lib/modules/3.13.0-36-generic/kernel/ubuntu/i915/i915_bdw.ko
Notes:
- "bdw" stands for "Broadwell"
- "bpo", I believe, stands for "backport"
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.19.0-33-generic 3.19.0-33.38~14.04.1
ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
NonfreeKernelModules: wl fglrx
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Nov 25 23:44:39 2015
InstallationDate: Installed on 2015-11-03 (22 days ago)
InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: linux-lts-vivid
UpgradeStatus: No upgrade log present (probably fresh install)
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