Computer hangs after suspend

[sriyan]

Expected:
Upon wake up from suspend, login screen is shown after which, normal operation is done.

Behaviour:
Upon wake up from suspend, the computer crashes/hangs. The 'Num Lock' and 'Caps Lock' don't work. I have to manually turn off power and turn it back on. Once that is done I get 'report bug' menu. I enter my password, then click report bug and then continue.

I'm using Ubuntu 14.04.02 LTS, before which I had Ubuntu 15.04. I formatted hdd for 14.04 installation.

lsb_release -rd:
Description: Ubuntu 14.04.2 LTS
Release: 14.04

apt-cache policy xfce4-power-manager:

xfce4-power-manager:
  Installed: (none)
  Candidate: 1.2.0-3ubuntu4.1
  Version table:
     1.2.0-3ubuntu4.1 0
        500 http://in.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages
     1.2.0-3ubuntu4 0
        500 http://in.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1471692

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.2 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc5-unstable/

[Launchpad Janitor (janitor)]

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