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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02"
href="https://bugs.freedesktop.org/show_bug.cgi?id=64332#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02"
href="https://bugs.freedesktop.org/show_bug.cgi?id=64332">bug 64332</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>
This is for Urs, murmlos, and cpcpcp:
(In reply to <a href="show_bug.cgi?id=64332#c0">comment #0</a>)
<span class="quote">> move with it or disappear. Strangely, if a line was present for long, it can
> "stay" on the screen across reboots, being even visible in BIOS and in
> Windows 8 if I reboot in the other OS. Turning the machine totally off and
> letting it like that for a long time makes the artifact disappear.</span >
Does booting to Windows ever cause the lines to appear if they were not
previously present? I.e. is it only the Linux driver that makes them show up,
or not?
<span class="quote">> Starting the machine with kernel option noreboot (and also noacpi) makes the
> bug disappear. (Xorg starts using the FBDEV vesa driver)</span >
Does using a lower resolution help?
Please try the drm-intel-nightly branch of
<a href="http://cgit.freedesktop.org/~danvet/drm-intel/">http://cgit.freedesktop.org/~danvet/drm-intel/</a> - specifically I'm wondering if
commit a65851af59387146a28a928c3e7bb17dabc5db72
Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Date: Tue Apr 23 15:03:34 2013 +0300
drm/i915: Make data/link N value power of two
might help this.</pre>
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