I'm using Ubuntu 24.04 with Full Disk Encryption and TPM, running the Snap kernel: pc-kernel 6.8.0-48.48.
When I connect an external display via HDMI to my laptop, the entire system locks up for approximately 30 seconds, and the external display is never detected. However, if I boot the machine with the external HDMI display already connected, there are no issues, then the display works as expected. The system also locks up when i unplug the HDMI cable. kernel: i915 0000:00:02.0: [drm] *ERROR* flip_done timed out kernel: i915 0000:00:02.0: [drm] *ERROR* [CRTC:131:pipe B] commit wait timed out kernel: i915 0000:00:02.0: [drm] *ERROR* flip_done timed out kernel: i915 0000:00:02.0: [drm] *ERROR* [CONNECTOR:245:HDMI-A-1] commit wait timed out kernel: i915 0000:00:02.0: [drm] *ERROR* flip_done timed out kernel: i915 0000:00:02.0: [drm] *ERROR* [PLANE:82:plane 1B] commit wait timed out kernel: i915 0000:00:02.0: [drm] *ERROR* flip_done timed out kernel: i915 0000:00:02.0: [drm] *ERROR* [PLANE:127:cursor B] commit wait timed out I have attached the complete kernel logs from journald for further analysis. ** Attachment added: "kernel journald logs" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2080598/+attachment/5836688/+files/kernel-journald.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2080598 Title: linux-image-6.8.0-44-generic breaks HDMI output (-41 works) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2080598/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
