https://bugzilla.kernel.org/show_bug.cgi?id=211997

Bug ID: 211997 Summary: sys-kernel/gentoo-sources-5.11.2 crash upon disconnect HDMI monitor AMDGPU Product: Drivers Version: 2.5 Kernel Version: 5.11.2-gentoo Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: stefan@konink.de Regression: No

Created attachment 295529 --> https://bugzilla.kernel.org/attachment.cgi?id=295529&action=edit dmesg

When disconnecting a second monitor on a AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx the system seems to hang. It is reachable over a wired connection, but the screen (other than a moving mouse) does not repond to any input. Connecting new devices such as an external mouse does not seem to influence the running session.

Connected over netconsole, and later direct via the wired connection the error presented in dmesg:

[drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]] *ERROR* [CRTC:70:crtc-1] flip_done timed out [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:70:crtc-1] flip_done timed out [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:50:plane-2] flip_done timed out