SNA enabled causes random system freezes

Bug #1687069 reported by slumbergod on 2017-04-28
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xserver-xorg-video-intel (Ubuntu)
Undecided
Unassigned

Bug Description

Since clean installing 16.04 (also 16.04.1 and 16.04.2) my Samsung laptop has been freezing randomly. These are total system hangs. It is not possible to use the REISUB method to safely shutdown so I've been forced to have a hard power off. On two occasions this caused my file system to be corrupted and fsck wasn't able to fix the corruption, forcing a reinstall.

At first I thought it was the Bay Fail bug affecting me so I tried the intel_indle.cstate=1 method but it did not fix the problem. My CPU isn't listed as being affected by that bug (Intel Core i3-3110).

So far all that seems to stop it is adding the following to /usr/share/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Card0"
Driver "Intel"
Option "AccelMethod" "uxa"
EndSection

Warning: if you are one of those semi-autistic trolls that have infected the kernel forum DO NOT bother participating in my bug report. I have had enough of being flamed when all I am trying to do is find answers.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
Uname: Linux 4.4.64-040464-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Fri Apr 28 11:57:00 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-04-23 (5 days ago)
InstallationMedia: Xubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)

slumbergod (slumbergod) wrote :
Emily Ratliff (emilyr) on 2017-04-28
information type: Private Security → Public
slumbergod (slumbergod) wrote :

Just some further feedback on the random freezes. Since forcing uxa not a single system freeze.

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