On Sun, Jan 16, 2022 at 12:26 AM Alexander Sergeyev <sergeev917@xxxxxxxxx> wrote: > > On Sat, Jan 15, 2022 at 11:47:40PM +0800, Kai-Heng Feng wrote: > > > Note that the device can boot up with working speakers and micmute LED > > > without this patch, but the success rate would be quite low (order of > > > 16 working boots across 709 boots) at least for the built-in drivers > > > scenario. This also means that there are some timing issues during early > > > boot and this patch is a workaround. > > > > Does this issue happen to warm boot (reboot) or cold boot? > > The issue is definitely not limited to warm boots only. I can confirm cold > boots with no sound and also warm boots with functioning sound. With this in > mind, the provided numbers (16 good boots across 709 boots) are largely coming > from reboots since the testing was scripted and driven by SSH. If this issue also happens to cold boot it seems to be a BIOS issue. > > > If the issue only happen to warm boot, please try reverting commit > > 9d3fcb28f9b9 "Revert "PM: ACPI: reboot: Use S5 for reboot"". > > Many HP systems requires it to have a functional reboot. > > Interesting. I haven't noticed anything breaking with reboots on this > particular system (at least so far). If possible, please still give that commit a try. Kai-Heng
