Back with some more info -- although I start to feel that this is
getting a bit futile. Hibernation appears to be working again if GuC
loading is disabled in i915, so that was probably a separate issue for
me. Currently, it seems the machine is fairly stable when running
applications with DRI_PRIME
Played around even more. If I set "su -c 'env DISPLAY=:0 DRI_PRIME=1
glxinfo' my_username >/dev/null" as a post-suspend hook in systemd, my
GPU returns to state 1 after resume. It would be better to set this hook
in KDE, so I don't have to jump through hooks to run in on the X server
/ with the cor
Played around a little bit more with suspend-resume cycles and HDMI
connection. It seems that after a suspend-resume-glxgears cycle, I can
connect and disconnect by external monitor reliably (no "Unsupported
output format" message), so that behavior seems to trigger either only
after boot, or rando
I am having similar issues on an ASUS GL504GM (Intel i7 8570H, Nvidia
GTX1060) on Linux 4.19.5. My system is stable with the nouveau driver if
I use acpi_osi=! acpi_osi="Windows 2009", or if I patch SSDT9 (it
appears to handle the dGPU power management) by removing any code
conditional on OSI > 200
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