<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Backlight does not change when adjust it higher than 50% after S3" href="https://bugs.freedesktop.org/show_bug.cgi?id=97486#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Backlight does not change when adjust it higher than 50% after S3" href="https://bugs.freedesktop.org/show_bug.cgi?id=97486">bug 97486</a> from <a class="email" href="mailto:yuanchao@gmail.com" title="Yuan Chao <yuanchao@gmail.com>"> Yuan Chao</a> <pre>Regarding a long out-standing bug on Maabook Air 6,2 (2013), there is a similar behavior on back light after S3. [<a class="bz_bug_link bz_status_VERIFIED bz_closed" title="VERIFIED NOTOURBUG - After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2" href="show_bug.cgi?id=67454">Bug 67454</a>] With the suggested test on Comment 10 to 14 here, I found that instead of SOUTH_CHICKEN1 reg., SOUTH_CHICKEN2 reg. needs to be kept and restored. The output of 'lspci -nns 2' is 00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a26] (rev 09) Would the proposed patch be extended and cover the issue on MBA? Thanks!</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>