https://bugzilla.kernel.org/show_bug.cgi?id=203035
--- Comment #19 from Derek J. Clark (derekjohn.cl...@gmail.com) --- (In reply to Dave from comment #18) > (In reply to Thanathan from comment #3) > > Additionally I lost gui/tui output shortly after the kernel was loaded, > > including ttys. Reverting to linux-firmware 20190424.4b and rebuilding > > initramfs fixed the issues. > > I have found that I get similar hangs when the GPU is in the lowest clock / > memory clock state, as well as the highest state. Disabling these two > states via: > > echo "manual" > /sys/class/drm/card0/device/power_dpm_force_performance_level > echo "2 3" > /sys/class/drm/card0/device/pp_dpm_mclk > echo "3 4 5 6" > /sys/class/drm/card0/device/pp_dpm_sclk > > Allows the laptop to avoid these hangs with the updated firmware (though at > a performance loss and higher idle power.) > > I also noticed that these hangs are a reliable way to trigger the power > issue, where the cord isn't recognized, as it persists after boot (sometimes > for two or three boots before it is recognized again.) > > Additionally, this problem only appears after boot - while waiting at the > dmcrypt prompt, for instance, power is always detected normally. Took your input and updated my workaround on github. Provides decent operation for now. https://github.com/pastaq/Acer-Ryzen-Helios-AC-Fix -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
