https://bugs.freedesktop.org/show_bug.cgi?id=97460
Bug ID: 97460 Summary: [drm][amdgpu][CIK] drm_sysfs_connector - BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 Product: DRI Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: shawn.starr@rogers.com
Created attachment 125990 --> https://bugs.freedesktop.org/attachment.cgi?id=125990&action=edit Dmesg of kernel bootup - 4.7.0 kernel
When trying to enable Switchable Graphics, I am unable to bootup.
With 4.7.0 it booted but no X display could start With 4.8-rcX it deadlocks on bootup now.
1) If the LCD (LVDS) display lid is open, no such kernel panic message is displayed and deadlocks bootup. 2) It the lid is closed, a panic message is shown (and deadlocks bootup).
Trying to enable PRIME on AMDGPU with CIK experimental enabled fails. attached to this BZ is dmesg of oops from 4.7.0 kernel, the stack is the same for 4.8-rcX.
PRIME has never worked for me on AMDGPU it has worked on regular radeon however.