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Sleep problem on Redmibook Pro 14 2022 Intel (12650h)
Description:
On Redmibook 2022 intel edition (14 or 15 inch models, i5-12450h and i7-12650h models) there is a bug: after suspending and resuming there is no screen and keyboard backlight on linux. After resuming using flashlight I can see ssdm screen, fans are working, volume adjust is working too. There are no errors in dmesg
.
On windows everything is ok.
What I have already tried:
0) Different kernels (from 6.1 up to 6.5)
- Different kernel parameters(
osi=! osi=Linux
,osi=! osi=Windows 2015
,acpi_backlight=native\video\vendor
); - Trying to adjust brightness through
sysfs
after resume; - Tryint to adjust brighness through
acpi_exec
(calling_BCM
method); - Decompinling dsdt\ssdt files, but not errors found. One ssdt table doesn't dump because of wrong header, but I don't think it is the reason of broken sleep;
- Trying S3 sleep mode (it is avaliable by default on intel models), but after resume system hangs: black screen, althouth keyboard backlight is working.
- Googling everywhere :) Sometimes laptop resumes correctly (one time of 10-20). Do you have any ideas where the bug could be? I'm really in stuck.