<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [sna suse] many black lines with latest ddx" href="https://bugs.freedesktop.org/show_bug.cgi?id=80948#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [sna suse] many black lines with latest ddx" href="https://bugs.freedesktop.org/show_bug.cgi?id=80948">bug 80948</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>My suspicion is that the corruption is dirty cache lines - a missing cache flush on the GPU, and the likely commit commit 2bf36d54ebdfa2a59bf7ef71134b953628ae5d50 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Wed Jul 2 11:31:54 2014 +0100 sna/gen6+: Tweak consideration of compositing on BLT Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> I think it is not the commit that is at fault here, but an underlying issue. I suspect I saw the corruption on first booting into master on this ivb, but haven't seen it again, nor reproduced it on another machine (snb/ivb). It is likely to depend critically on render path, GPU state and memory states.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>