<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [LPT SPT KBP] Acer V3-772G screen brightness cannot be adjusted with i915.fastboot enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=108225#c46">Comment # 46</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [LPT SPT KBP] Acer V3-772G screen brightness cannot be adjusted with i915.fastboot enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=108225">bug 108225</a> from <a class="email" href="mailto:bugs@mblankhorst.nl" title="Maarten Lankhorst <bugs@mblankhorst.nl>"> Maarten Lankhorst</a> <pre>Backlight turning off during S4 hibernate is expected. The kernel performs all steps of suspend. A whole snapshot of the memory is made. It then performs a resume so all devices are accessible again, and then the memory snapshot is written to disk. After this the system really shuts down. This is probably what you're seeing when hibernating. In the first patch to fix backlight on resume, can you change in intel_panel.c: if (panel->backlight.enabled && conn_state->crtc) { to: if (panel->backlight.level && conn_state->crtc) { ?</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>