Public bug reported:
Ever since updating to 15.10 my computer has been freezing every day.
Usually this happens after I've left work, and since I leave my computer
on, I manually start the screensaver (ctrl+alt+L), and when I come back
the next morning, the computer is completely unresponsive, even to
sysrq. Gnome screensaver itself doesn't appear to be the culprit since I
can turn it on, then log back into my system any time within perhaps 5
minutes. Looking at my root journalctrl output, yesterday, it appears to
have crashed 30 minutes after I logged out (I was zeroing a drive with
dd, and was issuing a kill -USR1 to track the progress every 30
seconds).
At first I thought it might be a botched upgrade from 15.04, so I tried
a clean reinstall last week, but it still freezes. There is also nothing
in the logs that would indicate an error/crash.
The only potentially related piece of information is that I use gnome-
shell, installed via ubuntu-gnome-desktop.
I'm not sure what package to file this under since I don't know how to
reproduce, or how to diagnose the issue. Any debugging advice will be
appreciated since this issue is really starting to annoy me.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: gnome-screensaver 3.6.1-7ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-27.32-generic 4.2.8-ckt1
Uname: Linux 4.2.0-27-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Feb 9 13:20:44 2016
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
org.gnome.desktop.session session-name 'gnome'
org.gnome.desktop.session idle-delay uint32 600
InstallationDate: Installed on 2016-02-04 (4 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: gnome-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-screensaver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug wily
** Attachment added: "journal.root.log"
https://bugs.launchpad.net/bugs/1543782/+attachment/4568103/+files/journal.root.log
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https://bugs.launchpad.net/bugs/1543782
Title:
Complete system freeze some time after screensaver starts.
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