Public bug reported:
I recently upgraded to the xenial LTS hardware enablement stack for
14.04. Wily was working like a charm. Now, periodically my system
freezes. My mouse stops working (doesn't even get power), keyboard is
unresponsive (though it is getting power, as indicated when I switch my
mouse to the keyboard usb slot, still mouse doesn't work). Ctrl-alt-F4
etc. do not switch me to an alternate terminal. I have to do a hard
shut down. Everything works fine after reboot, till the next system
freeze. I wonder if doing an upgrade to 16.04 will solve this issue or
make matters worse.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.4.0-34-generic 4.4.0-34.53~14.04.1
ProcVersionSignature: Ubuntu 4.4.0-34.53~14.04.1-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Aug 27 17:45:25 2016
InstallationDate: Installed on 2014-04-20 (860 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: linux-lts-xenial
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-lts-xenial (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty xenial
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https://bugs.launchpad.net/bugs/1617632
Title:
System entirely freezes--keyboard, mouse no use
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