Hi Thorsten, On Sun, 31 Mar 2024, Linux regression tracking (Thorsten Leemhuis) wrote: > Does you laptop offer a HDMI or DP connector? Have you tried if that > that works any better? If it does not, then the DRM developers might be > willing to look into this. There are only USB-C port on this machine. However the external monitor still works if I use a small (passive?) HDMI-to-USB-C adapter instead of the dock. > Anyway: could you try to bisect the problem as described in > https://docs.kernel.org/admin-guide/verify-bugs-and-bisect-regressions.html Will do. Thank you for your reply! Andrei