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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.
The text was updated successfully, but these errors were encountered:
Nope. I think problem is somewhere deep in SSDT, maybe problems with backlight power supply initialization (due to race condition). So I set up hibernation on lid close event as a workaround, but it is not so comfortable as it could be...
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)
osi=! osi=Linux
,osi=! osi=Windows 2015
,acpi_backlight=native\video\vendor
);sysfs
after resume;acpi_exec
(calling_BCM
method);Sometimes laptop resumes correctly (one time of 10-20).
Do you have any ideas where the bug could be? I'm really in stuck.
The text was updated successfully, but these errors were encountered: