On Sun, Jan 16, 2022 at 12:26 AM Alexander Sergeyev sergeev917@gmail.com 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