CachyOS live boot recognises display, but fresh install does not? Halp

Hi Team,

I’m fairly new to Linux so be gentle - I’ve spent some time poking around trying to figure this out before posting but apologies if the answer is obvious.

Basically, the title says it all, I boot CachyOS live from USB and it loads a crisp, snappy OS that recognises my display and has the correct resolution selected and looks slick. I install CachyOS and it no longer recognises the display and gives me a single resolution option that means everything is twice the size and looks awful. I wish there was an option to just install the live configuration and add whatever I need as I go.

Anywho, I compared the console of each and I can see the live boot uses x11 and the install uses Wayland. I tried to then install the plasma-x11-session package multiple ways but every time it attempts to connect the returns a 404 error.

  1. Is there an easy way to get the existing Wayland setup to recognise my LEN D32q-20B monitor and provide me with the 2560x1440 resolution option?

  2. Alternatively, if the answer to the above is no, or the solution is sub-optimal, is running x11 the answer? and if so, how do I retrieve / install plasma-x11-session?

I’ve included some screenshots for reference, thanks legends!

simply install it :wink: plasma-x11-session

sudo pacman -S plasma-x11-session

logoff and switch on X11 logon

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Ok apologies for being such a newbie. Logged in with X11, made sure I am running Nvidia up-to-date. Still not recognising the display and resolution options as per the screenshot above. I fail to understand why the live boot is able to recognise the display but the installed version cannot?, possibly beside the point as I would ideally like to get this running inside Wayland. Any help or pointing me in the right direction would be greatly appreciated thanks.

as I understand you’re able to run a x-session and a wayland-session,
selectable in login-screen?
and both sessions don’t offer a 2560x1440 resolution?

That is correct, both offer the single generic display profile with a single selectable resolution as per the screenshot.

Yet when I boot the live CachyOS installer from a USB it opens an X11 session and recognises the display / offers multiple resolutions.

that’s weird

normally there are about twenty setting options

Yep, I’ll try both again when I get home but it seems like it’s just an ‘unrecognised’ monitor profile with a single selectable resolution.

CachyOS live boot (from USB) recognises the display and has many corresponding resolutions to select from.

Let me know if you come up with anything to try out, thanks

what shows xrandr