ubuntu-x-swat team mailing list archive

[Bryce Harrington <849782@xxxxxxxxxxxxxxxxxx>]

jml, yeah would be nice to have a clearer video, but I gather that it's
a momentary micro-second event?  I didn't see it move up and down but
there was a notable glitch around the 9-10 sec mark?

I notice your logs have a lot of data in it, and I wonder if any of it
correlates to the glitch.  Can you please try running 'tail -f
/var/log/Xorg.0.log' in one window, and in another window something like
"while : ; do clear; dmesg | tail -n 20 ; sleep 1 ; done", do whatever
is necessary to get the issue to reproduce, and see if anything prints
to either log simultaneous with the glitch.

If Chris is correct that it's output polling, you should also turn on
kms debugging.  Run 'sudo xdiagnose' and tick the first checkbox, then
apply and reboot.  Use the same while loop as above to monitor dmesg
output while reproducing the problem to confirm polling activity
associated with the glitch.

Let us know the result in any case.

I notice you have an unusual number xkb cache messages showing up, which
looks curious.  Probably unrelated though.

Also, can you estimate when you first noticed this behavior?  Was it not
happening on a prior ubuntu release, or earlier on in oneiric?

** Changed in: xserver-xorg-video-intel (Ubuntu)
   Importance: Undecided => Medium

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/849782

Title:
  Screen jitters every so often, especially when laptop under load

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