0

EDIT || FIXED :

I'm terribly sorry... looks like i didn't (as i should have) double-check on Suse Tumbleweed properly as it wasn't pointing to the latest kernel yet(6.8.0-36-generic).

Just updated GRUB on Suse Tumbleweed once again, now it shows up on Kubuntu's entry, now it finally identifies my GPU & monitor properly... however... for some reason there was no longer a wayland session available, goes straight into the X11 one by default with no option to select an alternative.

Fixed by reinstalling sudo apt install plasma-workspace-wayland

All fixed & working now. Deeply sorry for the waste of time.

==========================================================

===========================

Hardware cpu: AMD 5950X

gpu: AMD 7900XTX

MOBO: Asus b550-A with two 2tb nvme drives for SO (pci-e4.0 and pci-e3.0)

32gb ram 3600mhz

monitor: Gigabyte m32u (2160p,ips)

Previous steps

These days i'm trying to setup a multiboot machine, with Win10 on pci-e4.0 nvme plus six different linux distros on pci-e3.0, with one customized grub to handle boot for all SOs installed.

Worth mentioning it, because i've been testing how different distros "get along" with each other in terms of compatibility (and i mean, the usual issues with the way they - Arch/Ubuntu/Fedora/Suse - handle GRUB) and each and every time on every test before wiping pci-e3.0 nvm and start again from scratch... i installed Kubuntu 24.04. on it... and always worked perfectly fine (gpu & monitor brand & models properly displayed, wayland working, everything in perfect working order).

Current state

Finally settled on half a dozen linux distros, so i kept my Win10 install on pci-e4.0 nvme and installed those six linux distros on pci-e3.0.

Kubuntu 24.04 worked fine on current install, until i updated the system and was faced with this well known issue:

Kubuntu 24.04 Black Screen / Not Booting After Upgrade

which i fixed following up the suggestion there,(long story short, setting GRUB_CMDLINE_LINUX_DEFAULT= to quiet) which worked fine.

Next boot... (and i'm writing this message from my Kubuntu 24.04. install)... GPU drivers aren't loaded, monitor drivers neither, can't select wayland/x11 session neither... it's like i'm stuck on some permanent safe-graphics mode.

Potential suspect

Since this is a multiboot (6 linux distros) drive with Kubuntu being installed in 3rd place and GRUB being controlled by the last distro installed (Suse Tumbleweed), i'm wondering if it might be this GRUB entry that's permanently redirecting towards safe-graphics mode.

I did sudo update-grub on any change while on Kubuntu 24.04, also updated GRUP on Suse Tumbleweed.

Any tip on what should i check next?

Thanks in advance

Improve this question
New contributor
Polemon is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
6
  • There never any monitor drivers only graphic card drivers.
    – David
    Commented 2 days ago
  • Glad to see it is working for you. Could you please instead of a comment use the answer you own question option at the bottom of the question.
    – David
    Commented 2 days ago
  • @David : strange... i have some other ubuntu-based distros with older kernels detecting my monitor as "generic"(doesn't allow me to set proper refresh rate nor color profiles), however on newer kernels it identifies brand & model with all settings available. PS: Done, just posted it as suggested, sorry for the mixup.
    – Polemon
    Commented 2 days ago
  • When a monitor is listed as generic one cause is that the HDMI cable is not bi directional so the monitor can not talk back to the OS. When the monitor info is listed it is a response from the monitor to a request from the OS.
    – David
    Commented 2 days ago
  • However... the aforementioned OS/monitor interaction happened on the very same machine, same HDMI cable, same parts, same everything... just different (ubuntu-based) distros with older kernel version on it. Sorry for the offtopic.
    – Polemon
    Commented 2 days ago

1 Answer 1

Reset to default
0

I'm terribly sorry... looks like i didn't (and i should) double-check on Suse Tumbleweed properly as it wasn't pointing to the latest kernel yet(6.8.0-36-generic).

Just updated GRUB on Suse Tumbleweed again, now it shows up on Kubuntu's entry, now it finally identifies my GPU & monitor properly... however... for some reason there was no longer a wayland session available, goes straight into X11 by default with no option to select an alternative.

Fixed by reinstalling sudo apt install plasma-workspace-wayland

All fixed & working now. Deeply sorry for the waste of time.

Improve this answer
New contributor
Polemon is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .