https://bugs.freedesktop.org/show_bug.cgi?id=101499
Bug ID: 101499 Summary: Black screen when detaching HDMI cable (AMD A10-9620P) 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: carlo@caione.org
Created attachment 132061 --> https://bugs.freedesktop.org/attachment.cgi?id=132061&action=edit journal_from_boot_to_HDMI_cable_detaching
We are working with new laptops that have the AMD Bristol Ridge chipset with this SoC:
AMD A10-9620P RADEON R5, 10 COMPUTE CORES 4C+6G
When the HDMI cable is attached and then detached, the internal panel goes black and the only way to have it back is switching to another TTY and then back to xorg or doing 'xset dpms force off; xset dpms force on'.
This is reproducible also on the ~agd5f/drm-next-4.13-wip branch.
In the attachment the whole journal when booting the kernel compiled from ~agd5f/drm-next-4.13-wip, landing in xorg and then attaching and detaching the HDMI cable.