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/ ? 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 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
