I installed Ubuntu 20.04 and for half a day everything was running ok until I connected it to my external monitor and everything is stuck loading in the boot screen. Not even forcing in to shut down works. What should I do?


I had a similar issue on Ubuntu 20.04 after the upgrade from 19.10. In my case, I noticed I could boot by disconnecting one of my two monitors.

So I have disabled the splash screen in the grub configuration and rebooted (sudo edit the file /etc/default/grub, remove the "splash" word on the line that starts with GRUB_CMDLINE_LINUX_DEFAULT, save the file and quit the editor, and then "sudo update-grub" to regenerate the grub init config). And now it works fine when booting with the two screens plugged in.

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