Xorg freezes after a few hours running

[Lupe Christoph]

Apologies if I failed to find a variant of this type of bug that relates to my problem. There are too many hits to this Xorg error in Google.

Xorg sort of freezes after some time running, even when unused. The mouse cursor moves, but there is not reaction to clicking, or to the keyboard. This correlates with the error in the Xorg.0.log:

(EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed.
(Full log attached.)

No input events are processed.

The hardware has been running various Ubuntu releases without change, right now I'm very unsure when I last upgraded the box. The Trusty -> Utopic upgrade went awry, at least partly because it did not tell me in advance that my root filesystem was too small at 12 GB. (/var, /tmp etc are separate filesystems.)

So I did a fresh install and that is the one freezing. Note that it is only the Xorg server freezing, I can SSH in and reboot. Restarting lightdm does not cure the problem, so I believe something inside the kernel is stuck.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-core 2:1.16.0-1ubuntu1.2
ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Dec 26 20:17:27 2014
InstallationDate: Installed on 2014-12-22 (4 days ago)
InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

Ubuntu 14.10 (utopic) reached end-of-life on July 23, 2015.

I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this issue is still relevant when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time.

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]