<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [4.18rc2] RX470 dGPU on hybrid laptop freezes screen after use" href="https://bugs.freedesktop.org/show_bug.cgi?id=107045#c21">Comment # 21</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [4.18rc2] RX470 dGPU on hybrid laptop freezes screen after use" href="https://bugs.freedesktop.org/show_bug.cgi?id=107045">bug 107045</a> from <a class="email" href="mailto:andrey.grodzovsky@amd.com" title="Andrey Grodzovsky <andrey.grodzovsky@amd.com>"> Andrey Grodzovsky</a> <pre>(In reply to taijian from <a href="show_bug.cgi?id=107045#c20">comment #20</a>) > OK, here is a new twist: upon further investigating this, I came across some > weird backlight behaviour that I originally reported here: > <a href="https://gitlab.gnome.org/GNOME/gnome-settings-daemon/issues/53">https://gitlab.gnome.org/GNOME/gnome-settings-daemon/issues/53</a>. However, as > it turns out, this is not a gnome issue but a kernel one. > > Namely, doing > > echo X > /sys/class/backlight/intel_backlight/brightness > > will wake my dGPU, even though it really shouldn't be involved at all (and > does not have a /sys/class/backlight device registered). Furthermore, > repeatedly invoking this command before the dGPU has had the chance to go > back to sleep will not do anything. Thirdly, this seems to be a very good > way to get the system to hard lock up. > > So, is this an amdgpu issue? A i915 issue? ACPI? where should I take this > bug report? What do you mean by 'wake' the dGPU? This should be a separate ticket which you can submit here + attach dmesg after this 'wake'.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>