draskostar Posted September 16, 2021 Share Posted September 16, 2021 I am trying to figure it out but till now without success. When connected to power cord wake up from sleep works but when disconnected (battery only) then always ends with black screen with backlight. In this case I have to restart my pc. My system has igpu4600 and dgpu k4100m. Many thanks in advance! Link to comment Share on other sites More sharing options...
draskostar Posted September 25, 2021 Author Share Posted September 25, 2021 Ok, It looks like this is a permanent problem on Dell laptops with linux based os. I searched on the internet for some solution but wake up from s3 only works when AC is connected:( On Lenovo laptops this problem was solved with bios update. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted September 25, 2021 Administrators Share Posted September 25, 2021 OS X/macOS is not based on Linux and what you report is not a general issue affecting all Dell laptops. Did you try optional boot-args such as igfxonln=1 ? In all likelihood, this black screen on wake problem may be solved with some ACPI battery patch. Impossible to say more without any debugging info... Link to comment Share on other sites More sharing options...
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