I followed this advice (mentioned above):
https://www.reddit.com/r/Kubuntu/comments/1cdko49/comment/l1uf573/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
It seems that "quiet splash" is the actual problem, not "nomodeset"
(solution).
I edited the GRUB entry as follows (with results added):
1) With only "quiet splash" (no "nomodeset"), default installation,
fresh install of Kubuntu 24.04: only black screen, nothing happens.
2) Add "nomodeset" to "quiet splash": everything works perfectly. Also
works permanently with editing of /etc/default/grub.
3) Delete "quiet splash" in GRUB and do not add "nomodeset" (or delete
"nomodeset", if previously added): everything works perfectly (see
Reddit link above).
4) Delete "nomodeset", after having added it to /etc/default/grub and
updated grub previously, but leave the 'original' "quiet splash":
computer hangs, completely unresponsive, after showing the following
code:
Booting a command list
Loading Linux 6.8.0-31-generic ...
Loading initial ramdisk ...
5) Again, boot without both "quiet splash" or "nomodeset": everything works
perfectly. Also works permanently with /etc/default/grub.
It went quite fast, but after "Loading initial ramdisk ..." I think the next
code line was "enabling secure boot". It might be a problem with "secure boot"
and "quiet splash". Secure boot is enabled in both my installations, so I can't
try the other option ("secure boot" disabled in the EFI BIOS before
installation).
Workaround (for me):
- Edit /etc/default/grub: the line "GRUB_CMDLINE_LINUX_DEFAULT=". Delete the
words "quiet splash" (leave the quotation marks '').
- Run sudo update-grub
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https://bugs.launchpad.net/bugs/2063983
Title:
24.04 Upgrade/Fresh Install results in black screen on reboot on
AMDGPU system
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