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[Bug 1517950] Re: Kubuntu Freezes / Crashes on Suspend to RAM


Kai Petzke, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1517950

Please ensure you have the package xdiagnose installed, and that you
click the Yes button for attaching additional debugging information.

When reporting xorg related bugs in the future, please do so via the
above method. You can learn more about this functionality at

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

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  Kubuntu Freezes / Crashes on Suspend to RAM

Status in xorg package in Ubuntu:

Bug description:
  Hardware is Lenovo Yoga 2 13.3 convertible. Unfortunately, I have two
  problems with suspend-to-RAM on Kubuntu 15.10.

  * Problem one is already reported in bug report 1418295: Sometimes,
  the screen freezes on resume. This seems to happen more often, when I
  happen to touch the touchscreen in the seconds of resume. As this is
  already a confirmed bug, no more info to it here.

  * Problem two - and the more serious problem - is, that the whole
  system freezes at the time of suspend-to-RAM, when it has been running
  for more than two hours since boot or last resume. So, if I remember
  to interrupt my work at least every two hours, press the power button
  (which I have set to perform suspend-to-RAM), and then immediately
  wake up the system again, I am fine. But if the system has run for
  more than two hours, and I then do the suspend-to-RAM, it freezes
  before the suspend: The screen turns black as it ought to in suspend-
  to-RAM, but the power does not go off and the CPU fan keeps running.
  Input is no longer possible. In this state, the only thing, that I can
  do, is a hard power-off: Press the power-button for over 5 seconds.

  This problem is very annoying.

  I've had this problem since original install with Kubuntu 15.04. An
  install to Kubuntu 15.10 in the last weeks didn't solve it.

  I tried to report this bug also with ubuntu-bug, but it ended with a
  segfault, after it displayed the aggregated data.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
  Uname: Linux 4.2.0-18-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu Nov 19 16:04:34 2015
  InstallationDate: Installed on 2015-07-06 (135 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to wily on 2015-10-18 (31 days ago)

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