Login to Unity session fails with linux 4.4.0-22

[Gunnar Hjalmarsson]

My attempts to launch Unity sessions on an updated yakkety fails with linux 4.4.0-22 (both 4.4.0-22.39 and 4.4.0-22.40). Just some blinking on the screen, and I'm thrown back to the greeter. It happens when I try to launch a guest session too, so it shouldn't be anything in my $HOME.

linux 4.4.0-21.37 does not trigger this issue.

Attaching .xsession-errors.

[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 1584106

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)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 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/v4.6-yakkety

[Joseph Salisbury (jsalisbury)]

If the mainline kernel still has the bug, we can perform a bisect to find the commit that introduced the bug.

[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 1584106

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.

[Gunnar Hjalmarsson (gunnarhj)]

I installed linux 4.4.0-23.41 from yakkety-proposed, and that fixed the issue.

Fortunately I didn't meet the problem on xenial; the problem was linux 4.4.0-22 on Ubuntu 16.10, but since it's fixed in -proposed, it will soon be history, right?

(don't know how to use apport-collect in a situation like this)

[Joseph Salisbury (jsalisbury)]

Yes, if the bug is fixes in -proposed, it will soon be fixed in -updates.

[Gunnar Hjalmarsson (gunnarhj)]

4.4.0-23.41 is in -release - let's consider this fixed.