<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - corruption after resuming from hibernation" href="https://bugs.freedesktop.org/show_bug.cgi?id=80773#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - corruption after resuming from hibernation" href="https://bugs.freedesktop.org/show_bug.cgi?id=80773">bug 80773</a> from <a class="email" href="mailto:h.judt@gmx.at" title="Harald Judt <h.judt@gmx.at>"> Harald Judt</a> <pre>Ok, issue solved. First, reverting "[PATCH] drm/i915: Undo gtt scratch pte unmapping again" got rid of the corruptions in 3.15.2. Turning off fbsplash seemed to make hibernation more stable, freezes did no longer occur. However, when hibernating on AC and then resuming on battery, hard disk errors would start to appear, and I found <a href="https://bugzilla.kernel.org/show_bug.cgi?id=72191">https://bugzilla.kernel.org/show_bug.cgi?id=72191</a>. The solution was to update the BIOS of T440s from 2.10 to 2.27. Now hibernation and resuming works without errors, currently counting 37 successful attempts. Probably that measure resolves other stability issues too. I'll try again without reverting the patch to see whether it is still required.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>