ubuntu-x-swat team mailing list archive

[Bryce Harrington <749817@xxxxxxxxxxxxxxxxxx>]

Ah, the blank screen issues are apparently DPMS breakage in the kernel
specific to Arrandale graphics chips.  Arrandale gfx appears to be used
in many recent thinkpad models, but aside from that it seems not to be a
thinkpad-specific issue.

I did up an X driver patch to try and work around the kernel issue,
please give this a shot:

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

Testing feedback so far on this has shown that it makes things better
for some people, not so much for others.  But I haven't gotten enough
feedback accumulated yet to know if this fix is worth pursuing.

You can also try testing Intel's experimental kernel, which we now
provide daily builds for.  It's here:

http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next-proposed/

I've no particular reason to believe it will fix this issue, but it's
worth testing esp. if we decide to forward the bug report upstream.

-- 
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https://bugs.launchpad.net/bugs/749817

Title:
  natty regression: screen goes black when external monitor is connected