Endlessloop?

[Jeffrey Walton]

On Thu, Nov 13, 2025 at 4:37 AM Grizzly via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:
>
> Still trying (on third re-install) to get past this problem, either I'm (with
> nomodeset in grub) stuck with a 1280x1080x60hz screen (on a 27" monitor) very
> hard on eyes
>
> OR
>
> I get a good clear 1920x1080x75hz screen with no launcher/dock for a few
> seconds (2.5 ?) followed by an endless loop of fuzzy screen then black screen,
> repeate
>
> I managed to get a terminal (sometimes the fuzzy screen takes focus back) and
> clear journalctl then (to limit size to current issue?) the did journalctl -r
> (piped to a text file)
>
> I hope someone can make sense

It has been my experience that you might be missing a driver when
display resolution is clamped.  You might try ensuring the latest
drivers are available:
<https://askubuntu.com/questions/543325/how-to-download-all-required-ubuntu-drivers>.

Use ALT+F2 or similar to get to a terminal rather than a
malfunctioning desktop environment.

Jeff