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Precision M6800: black screen on wake when running on battery


draskostar

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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!

 

 

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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...

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