This issue affect lenovo t450s as well. As result when connected to docking
station with two monitors attached (vga and dvi) monitors are not recognized
and dmesg flooded with infamous error ([ 743.432704] [drm:gen8_irq_handler
[i915_bpo]] *ERROR* The master control interrupt lied (SDE)!). It doesn't crash
the computer but in some cases make displays unrecognizable when undock
|dock.
- device: lenovo t450s
- proc: i7-5600U
- OS: ubuntu 14.04.03
- kernel: 3.19.0-33-generic x86_64
- video:
*-display
description: VGA compatible controller
product: Broadwell-U Integrated Graphics
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915_bpo latency=0
resources: irq:45 memory:e0000000-e0ffffff
memory:d0000000-dfffffff ioport:3000(size=64)
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https://bugs.launchpad.net/bugs/1488719
Title:
dmesg shows "[drm:gen8_irq_handler [i915]] *ERROR* The master control
interrupt lied (SDE)!"
Status in Linux:
Fix Released
Status in linux package in Ubuntu:
Confirmed
Bug description:
On a recent intel NUC using i915 graphics, I get the following errors
in dmesg:
[drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt
lied (SDE)!
There are two monitors connected to this box, one with mini-
HDMI->HDMI, one with mini-DP->HDMI cable.
Maybe related:
https://bugs.freedesktop.org/show_bug.cgi?id=80896
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-generic 3.19.0.26.25
ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
Uname: Linux 3.19.0-26-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.3
Architecture: amd64
Date: Wed Aug 26 10:07:31 2015
InstallationDate: Installed on 2015-08-01 (24 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-26-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
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