https://bugzilla.kernel.org/show_bug.cgi?id=216745 Bug ID: 216745 Summary: Kernel 6.1 breaks Thinkpad T14 Gen 2 AMD connection to USB-C dock Gen 2 with kernel Null pointer Product: Drivers Version: 2.5 Kernel Version: 6.1.0-rc6 Hardware: AMD OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: ezou@xxxxxxxxxxx Regression: No Created attachment 303299 --> https://bugzilla.kernel.org/attachment.cgi?id=303299&action=edit journal output with DRM debug set to 0xf Full description of the problem: Connecting T14 Gen 2 AMD to Thinkpad USB C Dock Gen 2 via USB-C on DP Alt mode. Since kernel 6.1.0-rc4 (and rc 5, rc 6), once the usb c cable is plug in, the dock and computer detected the connection by blinking on both power buttons (on laptop and dock), and then the laptop became completely unresponsive, has to be powered off by long press on power button. Based on the journal output it looks like something about DRM and AMDGPU, and Kernel null pointer (and oops message). Keywords: DRM, AMDGPU Most recent kernel version which did not have the bug: Tried 5.19.17, 6.0.10 and it's working. A journal output with DRM debug value set to 0xf is attached. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
