The biggest change that I found between a Pi3 and a Pi4 was that the Pi4 would 100% reproduceably hang during booting if there was no monitor connected. Hence the line that I had to insert - it was a posting on this forum that gave me the clue, going back several years. Unfortunately the instant that I connected a monitor, the Pi booted - there was a brief glimpse of white lettering on black background (the GRUB?) and then the normal desktop appeared before I could read the wording. You were wondering whther the HDMI works without a monitor. With the workaround line in config.txt, the Pi does indeed keep HDMI enabled - if I plug in a monitor after it's booted, a desktop appears.
Now with a Pi5 I'm getting occasional hangs. I'm not sure whether it's always when I do a reboot, as opposed to a shutdown and then reapplying power. Though TCP still responds to pings, it doesn't respond to SSH or VNC connections. In this case, when it happens, booting does not continue and keeps a message about a Plymouth service (I should write it down next time it happens). I think it may be during the final stages of shutting down rather than the early stages of booting back up. It only happens occasionally, but my first thought was the Pi4's "won't boot without a monitor connected" problem.
Now with a Pi5 I'm getting occasional hangs. I'm not sure whether it's always when I do a reboot, as opposed to a shutdown and then reapplying power. Though TCP still responds to pings, it doesn't respond to SSH or VNC connections. In this case, when it happens, booting does not continue and keeps a message about a Plymouth service (I should write it down next time it happens). I think it may be during the final stages of shutting down rather than the early stages of booting back up. It only happens occasionally, but my first thought was the Pi4's "won't boot without a monitor connected" problem.
Statistics: Posted by martinu — Sun Sep 01, 2024 7:41 pm