<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <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#c10">Comment # 10</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 <a class="email" href="mailto:murmlos@gmail.com" title="murmlos@gmail.com">murmlos@gmail.com</a> <pre> No, Windows does not generate these artifacts. So yes its only the linux driver that causes this. Lowering the resolution in general does not help. However when i tried 640x480 i waited almost 15 minutes and no artifact had appeared. When switching to something higher like 1024x768 the lines appeared almost instantly. I have tried the drm-nightly and it does not help :/ (In reply to <a href="show_bug.cgi?id=64332#c9">comment #9</a>) > This is for Urs, murmlos, and cpcpcp: > > (In reply to <a href="show_bug.cgi?id=64332#c0">comment #0</a>) > > 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. > > 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? > > > Starting the machine with kernel option noreboot (and also noacpi) makes the > > bug disappear. (Xorg starts using the FBDEV vesa driver) > > 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> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>