ubuntu-x-swat team mailing list archive

[Chris Halse Rogers <raof@xxxxxxxxxx>]

Hm, ok.  Those logs indicate that the X server thinks it's successfully
changing the mode, and there are no error messages visible anywhere.

That would indicate that this is likely a kernel bug.  Could you please
run ‘sudo xdiagnose’, tick the “extra graphics debug messages” box, hit
‘apply’, and then reboot?  Once you've rebooted, could you reproduce the
bug again and attach the output of “dmesg” here.  That will have as much
debugging data as possible!

It would also be useful to try a newer kernel, as it's possible this has
already been fixed - http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-
next/current/ contains builds of newer kernels.  If this bug is fixed
there then we've got a much easier job - just hunting down what change
fixed it, rather than working out how to fix it :)

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https://bugs.launchpad.net/bugs/840865

Title:
  changing monitor resolution does not work

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