On Mon, Mar 22, 2021 at 04:51:26PM +0100, Hans de Goede wrote: > Hi, > > On 3/22/21 3:53 PM, Ville Syrjälä wrote: > > On Mon, Mar 22, 2021 at 11:45:39AM +0100, Hans de Goede wrote: > >> Hi, > >> > >> On 3/14/21 11:30 AM, Mario Hüttel wrote: > >>> Hello, > >>> > >>> It seems, like the mailing list, didn't accept my email. So I'll send > >>> it again: > >>> > >>> I want to report a bug. I have a PC with Intel i7-6700K processor (with > >>> integrated graphics) and an AsRock Fatal1ty Z170 Gaming K6 mainboard. I > >>> use the CPU's integrated graphics. > >>> My system is Archlinux with Kernel v5.11.6. > >>> > >>> Using this setup, my PC works normally. However, when I shut it down, > >>> the power is not cut. Fans keep spinning and LEDs stay on. I couldn't > >>> detect any other problem when shutting down. Drives etc. stop as > >>> expected and the video is blank. Even after waiting several hours, the > >>> system doesn't power down. > >>> > >>> Restarts work normally. > >>> > >>> I haven't yet found any other people on the internet that have the same > >>> bug. > >>> > >>> I used git bisect to find the commit that causes this behavior on my > >>> machine. > >> > >> Thank you for doing a bisect that is always very helpful. > >> > >>> The result is: fe0f1e3bfdfeb53e18f1206aea4f40b9bd1f291c is the > >>> first bad commit. > >> > >> To save others the trouble of having to look up the hasj, that is: > >> > >> "drm/i915: Shut down displays gracefully on reboot" > >> > >> Which is the same commit as which I've reported is causing issues > >> with DSI panels not lighting up on reboots on some BYT/CHT devices. > >> > >> Since this seems to mostly be intended to fix issues surrounding > >> DP MST stuff, maybe the graceful shutdown should only be done when > >> MST is in use? > > > > No. It also fixes Windows, lols. > > Ok, can you at least take a look at my patch which fixes (works-around) > the issues for DSI panel on BYT/CHT DSI devices: > > https://patchwork.freedesktop.org/patch/422481/ > > ? Never reached my inbox. > > In that case the display stays black after reboot in the BIOS / in apps > using the EFI fb/console such as the grub menu and when using fastboot > it also stays black under Linux (I did not test Windows) only after forcing > a modeset under Linux the DSI LCD panel works again. > > As I mention in the commit msg given the age of the platforms involved > I think that a simple workaround as I suggest there is best. > > Regards, > > Hans -- Ville Syrjälä Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
