giddyhup

I am not the original reporter but I have the same issue: single monitor connected on HDMI1 shows no picture. Result after rpi-update + cold boot: short flash of boot...

dmesg shows several entires related to DRM, if that's related.

I can't use HDMI0, my adapter is too wide. HDMI1 worked when I booted the original buster image (slimmed desktop version). ```` pi@raspberrypi:~ $ vcgencmd version Jul 2 2019 15:12:05...

... (I removed the workaround. Now I have problems booting with a monitor attached.)

Without monitor or when plugging in monitor when the Pi is already running ``` tvservice -s state 0x120001 [TV is off] ``` With monitor after boot: ``` tvservice -s state...

I can't reproduce the stuck-at-boot situation reliably but I am SSHing all the time, I currently have neither keyboard nor mouse attached.

recent dmesg entries: ``` [ 17.751802] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]] *ERROR* [CRTC:43:crtc-0] flip_done timed out [ 27.991793] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:43:crtc-0] flip_done timed out [ 38.231799] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CONNECTOR:45:HDMI-A-1] flip_done timed...

Yes. Monitor was plugged in before boot. [Monitor does not appear to support 4k](https://www.philips.co.uk/c-p/243V7QJABF_00/full-hd-lcd-monitor).

Latest syslog output: ``` Jul 2 17:26:20 raspberrypi kernel: [ 908.008941] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CONNECTOR:45:HDMI-A-1] flip_done timed out Jul 2 17:26:20 raspberrypi kernel: [ 908.009049] ------------[ cut here ]------------ Jul...

OK, I will stick with core_freq_min=500.