Occasionally, when I power up my friendly RPi, the screen stays blank as if there is no output from the HDMI. I can still
ssh to the device, so it is working.
Can anyone suggest reasons why it may be happening and how to fix it?
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This was due to incorrect settings in
Actually deleting the config file solved my issue, but its purpose and possible parameters are documented here.
The contents of my file were:
hdmi_mode=19 #arm_freq=800 disable_overscan=1
This is what comes by default in Arch. The
hdmi_mode=19 setting sets the HDMI output to
1024x768 85Hz, which is apparently an unsupported resolution for my monitor.
I believe that deleting the file sets the output to
hdmi_mode=1, which is
VGA. Clearly this is suboptimal, so I recommend experimenting to find the best value.