I'm unable to pair my Wacom tablet to my notebook via BT. I think I know the root cause of the issue which is the version of Bluez being 5.64 and the behavior of the issue is the same as I had on Fedora on my main PC few months back when I've tried to pair PS5 Dual Sense controller.

I was able to fix the issue on Fedora by downgrading the Bluez version with "sudo dnf downgrade bluez" but on Pop!_OS this does not work and neither I was able to upgrade to one of the newer versions 5.65 or 5.66 (it says I need to compile these?).

I'm new with Linux so I'm not sure how I would go about compiling something to make it work. The 5.65 version seems to have bugfixes for my issue but I'm perfectly fine with downgrading to anything older as long as it works if it's simpler to do.

To describe the issue:

When I put tablet into a pairing mode it will appear in the Pop!_OS system and I can select it to pair. It will attempt to pair but then fails.

I've tried to force it to pair with "bluetoothctl trust/pair/connect MacID" commands and it managed to say "connected" but the tablet was still not responding and the LED was blinking as if it was still in pairing mode. I've also tried the Blueman GTK BT manager with no luck.

Note: It works perfectly well via USB connection. It also connects instantly to my main Windows PC via BT so the tablet is not at fault.

EDIT;

FIGURED IT OUT

by default laptop was non-discoverable and there is no system setting on either Pop!_OS or Fedora to make it discoverable. Had to use Blueman to make it so. I've only noticed that when doing "sudo systemctl bluetooth" for XYth time and there was "Disoverable: No" next to one of the MacIDs. After figuring out the ID belongs to my laptop I just had to figure out how to make it discoverable and turns out Blueman can do it.