SARPI (fatdog) on RPi4 - no HDMI video [SOLVED]
When I booted the RPi4 from the newly "xc"'d sdcard there was no HDMI video. The fix was to uncomment the following two lines in config.txt (in the mmcblk0p1 partition):
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# Uncomment if you get no picture on HDMI for a default "safe" mode After installing SARPI and rebooting, again, no HDMI video... Again, the fix was to uncomment the same two lines in /boot/config.txt |
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No HDMI output on RPi4 (why and fix)
I found out WHY the HDMI video doesn't work on some installs....
If you use an OLD monitor (or a TV) for the install, they may not be able to handle the high default resolution of the RPi4. When this is the case, the monitor just shows a black or a "no input signal" screen. You can fix this by changing monitors -OR- changing the config file as I described in the first post. |
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I generally try to connect via ssh when there's no expected display, and if that is working OK I then look at the video mode(s), then cables, etc. ;) |
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