Lacking   resources  to do full kernel  commit bisect, I found "adjacent"
kernels
in  the order of  http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D

we  have last  good kernel
v3.19.8-ckt9-vivid/

first bad  kernel:
v4.0-rc1-vivid/


kernels   tested:
Good:
3.19.8ckt4
3.19.8ckt7
3.19.8ckt9

Bad:
4.0.5
4.0rc1
4.1.2
4.2.1
4.2.5
4.3rc7


On 31 October 2015 at 09:57, Riskable <[email protected]> wrote:

> I take it all back...  As I was working on my WebGL code just now it
> crashed again.  I've attached my Xorg.2.log which clearly shows a
> problem:
>
> [  1329.968] (WW) Falling back to old probe method for vesa
> [  1332.117] (EE) intel(0): [drm] failed to set drm interface version:
> Permission denied [13].
> [  1332.117] (EE) intel(0): Failed to claim DRM device.
> [  1332.117] (II) UnloadModule: "intel"
> [  1332.117] (EE) Screen(s) found, but none have a usable configuration.
> [  1332.117] (EE)
> Fatal server error:
> [  1332.117] (EE) no screens found(EE)
> [  1332.117] (EE)
> Please consult the The X.Org Foundation support
>          at http://wiki.x.org
>  for help.
> [  1332.117] (EE) Please also check the log file at "/var/log/Xorg.2.log"
> for additional information.
> [  1332.117] (EE)
> [  1332.142] (EE) Server terminated with error (1). Closing log file.
>
> What's up with that permissions error?  Also, why is it even getting
> such an error so late after running just fine for hours?
>
> ** Attachment added: "Xorg.2.log"
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509556/+attachment/4509620/+files/Xorg.2.log
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1509556
>
> Title:
>   Kubuntu Wily upgrade screen glitch with  4.2 kernel
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509556/+subscriptions
>

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https://bugs.launchpad.net/bugs/1509556

Title:
  Kubuntu Wily upgrade screen glitch with  4.2 kernel

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