ubuntu-x-swat team mailing list archive

[Bryce Harrington <761236@xxxxxxxxxxxxxxxxxx>]

Hi Andres,

There have been a bunch of bugs filed about Arrandale with external
monitors causing trouble.  I've only seen one other bug where a
flickering screen resulted (lp #758785), although the symptoms differed.
I posted a few random ideas to that bug report to test out, I'm going to
post a couple other random ideas here for you to try:

a) I've prepared a PPA which adds a DPMS on to the X driver.  Please
install this and then see if you can reproduce the bug:

https://launchpad.net/~bryce/+archive/elderberry

b) Upstream is staging several patches including some Ironlake/Arrandale
fixes to one of their kernel drm branches.  It would probably help them
if you could test these before we forward this bug report to them.  If
you wish (and know how), you can build the kernel manually:
http://git.kernel.org/?p=linux/kernel/git/ickle/drm-intel.git (branch
drm-intel-next-proposed).   If you don't know or don't wish to manually
build the kernel, I'm asking the kernel team to start doing automatic
daily builds of this tree; stay tuned and there will be .debs available
of it probably within a day or two.

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https://bugs.launchpad.net/bugs/761236

Title:
  [Arrandale] unable to correctly enable monitors connected  to VGA -
  results in flickering screen (x86_64 )