https://bugzilla.kernel.org/show_bug.cgi?id=211807 pavol.harar@xxxxxxxxx changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pavol.harar@xxxxxxxxx --- Comment #2 from pavol.harar@xxxxxxxxx --- I am experiencing the aforementioned error as well. [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 00000000f00db6df port 0: DPCD read on addr 0x4b0 for 1 bytes NAKed I have problems connecting my ThinkPad X1 Carbon 7gen to two external DP monitors via a ThinkPad USB-C gen2 docking station. Linux is not officially supported for this dock unfortunately. The problem is that the monitors work, but seemingly randomly they stop working, either I try to go to Ubuntu settings or try to open some program with a keyboard shortcut. The monitors flicker, then die and I have to reboot. Sometimes just reconnecting the cable works, but usually not. Sometimes when I connect my phone to the dock the monitors start working again, but most often not. There is a lot of people having these problems but I have not found any solution. In dmseg only this error appears. I am to the best of my knowledge up to date with everything, kernel, bios, firmware etc. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
