https://bugs.freedesktop.org/show_bug.cgi?id=110477

Bug ID: 110477 Summary: [5.0.7] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out! Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: taijian@posteo.de

Created attachment 144052 --> https://bugs.freedesktop.org/attachment.cgi?id=144052&action=edit relevant dmesg output

On an Alienware 15R3 with hybrid graphics (Intel/AMD RX470) I get the above error message (inter alia) in dmesg both during boot-up and whenever the dGPU gets woken from pm-suspend. This is not breaking, per se - the dGPU will perform it's duties normally when called upon, but takes a long time to 'go back to sleep' when no longer needed - see the bunch of

amdgpu: [powerplay] failed to send message 148 ret is 0

spam in dmesg. But maybe this has something to do with that?

dmesg attached.