[SOLVED] Help! No video after reboot with Ubuntu 21.04

Jun 29, 2021
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Have video during fresh install but after initial reboot after updating software get splash screen, couple lines of code then no video. Monitor indicates no signal on HDMI connection. Have tried with Raspberry OS and video works fine, even after updating software.
 
Have video during fresh install but after initial reboot after updating software get splash screen, couple lines of code then no video. Monitor indicates no signal on HDMI connection. Have tried with Raspberry OS and video works fine, even after updating software.
Your probably going to have to force start graphic drovers on boot full system speccs... Not all componets are supported by unbuntu,linux,mac os/kernals. Sometimes even if it worked before a udate can remove support of a product oland you will need to add your own
 

mamasan2000

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Have you checked here? https://raspberrypi.stackexchange.com/questions/4127/no-video-on-hdmi
2nd reply by Jan. Couple of commands in /boot/config.txt . Could SSH to your RPI to change it.
These:
config_hdmi_boost=4
hdmi_force_hotplug=1
hdmi_drive=2

This is probably a stupid way if you can't SSH in but...install Ubuntu again, update it as before but don't reboot just yet. Change the stuff in config.txt, then reboot.
 
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