https://bugzilla.kernel.org/show_bug.cgi?id=216766 Mathias Nyman (mathias.nyman@xxxxxxxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mathias.nyman@linux.intel.c | |om --- Comment #5 from Mathias Nyman (mathias.nyman@xxxxxxxxxxxxxxx) --- This could also be related to USB Type-C port setting in resume. I'm guessing this dock uses DP Alt-mode, with both Display port and USB 3 over Type-C. In both resume cases there are some error related to the display: [drm:dm_late_init [amdgpu]] *ERROR* DM_MST: Failed to start MST [drm:amdgpu_device_ip_late_init [amdgpu]] *ERROR* late_init of IP block <dm> failed -5 After this all usb devices on usb4 and usb5 buses disconnect (xHCI 0000:06:00.3:) There are no xhci errors in the log, just disconnects, as if Type-C port was muxed away from xHCI. A bit later we see DP Alt mode entry after first resume, and usb devices are enumerated again. [ 136.881649] [drm] DP Alt mode state on HPD: 1 [ 137.153415] [drm] DM_MST: starting TM on aconnector: 00000000018c53ab [id: 89] After second resume we don't se this DP Alt mode entry in the log, and usb devices remain disconnected. Not that familiar with Type-C settings, could be AMD specific -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
