[XORG] No X on any VT after fresh install

[pmcmorris]

Hello, Kubuntu Newbie here.

I did look for similar issues but didn't find a match. But then again I don't know what to look for as I don't really know what went wrong.

After a fresh install (with the download updates, install 3rd party, and disable secure boot options set) that seemed to complete without error, I don't get any graphical terminals after the reboot. There was a bizarre step on first reboot with "mok manager" to disable secure boot (by entering a password one character at a time in a random order... who thought that up?).

Now on booting it first says "booting insecure mode" then the screen clears and that's it. Just a blinky cursor in the top left. After leaving overnight I could see the odd dmesg entry printed out and realized that it was at least partially working. I can press ctrl-alt-f2/f6 to get a console tty1 is the dmesg stream and the rest appear unused. I looked into the logs and saw that X failed to start and gave the following error:

(EE) Cannot run in framebuffer mode. Please specify busIDs for all framebuffer devices.

So it seems it failed to find a usable driver which leaves me with a few questions

1) Why didn't the open source driver work? (card too new? AMD Radeon Vega M)
2) Why didn't the 3rd party driver work?
3) What went wrong with the framebuffer driver?
4) Is there no software fallback?
5) How did X in installer GUI work? (Can't I use that as a fallback?)
6) How is black screen after install not a huge issue for other people? (I got similar behavior installing in a VM, it can't be that not uncommon)
7) What can I do now?

Thanks in advance for any advice,

Patrick

[GreyGeek]

Open that terminal again and enter
sudo mokutil --disable-verification
then
sudo apt update
sudo apt full-upgrade

If you get errors then repeat
sudo apt -f install
sudo dpkg --configure -a
over several times to either clear the problems or ascertain that the problem isn't partial installation problem.

For your black screen (no display) consult
https://linuxconfig.org/how-to-insta...c-beaver-linux
(That works in earlier Kubuntu's and Neons as well)

[pmcmorris]

Thanks for the help GreyGeek!

I got everything updated but it didn't seem to make any difference. The link you shared is for NVidia but this is an AMD/ATI card. I'll have a look and see if I can find a comparable article. But let me know if you know of one.

Patrick

[GreyGeek]

No X on any VT after fresh install

Did you try
ubuntu-drivers devices
to list your video driver choices, and then
sudo ubuntu-drivers autoinstall
to install the one which was listed as the preferred driver?

Sad news:
https://www.phoronix.com/forums/foru...pport-on-linux