I have a MediaTek Inc. MT7612U usb adapter, if it's present during boot, it will make the computer hang to the point magic key combo and switching to TTY becomes impossible, unfortunately this leaves no trace in the journal either.
This problem didn't happen on linux 5.8, 5.9 or 6, but reproduces every time with arch's build of 6.1 and 6.1.1 as well as my own build of 6.1
The system freezes before the display manager gets the chance to load if the device is connected from the start, and if connected after the boot process is complete, it will hang the system after roughly 3-4 seconds.
No errors are reported during the boot process before it freezes, and if I add "debug" to my kernel boot parameters the system won't freeze but it also didn't finish booting even after waiting for an hour, with the only thing being logged being "systemd-journald: Sent WATCHDOG=1 notification." which happened roughly every 100 seconds.
There is a thread that discusses a similar looking issue that even has a patch that with a bit of luck will fix this for you:
It seems it only applies on top of 6.2 so I won't be testing the patch soon.
In my tests this issue is fixed by the following patch:
Can you please test it?
I tested the https://firstname.lastname@example.org/ patch for 6.1.1 and it fixed the freezes.
kernels 6.1.0 to 6.1.2, issue reproduces with tplink archer t2uh. i can boot the machine, but everything freezes instantly when network manager tries to use it to connect to the network. Nothing special in the logs, i can see network interface created but no logs after that.
I tested 6.1.3 with https://email@example.com/ and there were no freezes
MT7610U is also broken
Running Fedora 6.1.7 and issue still exists for mt76x2u, so either Fedora hasn't included this patch or it doesn't fix the issue.
The fix should land in master really soon now and will then with a bit of luck will then be in next weeks stable release
(In reply to Peter Lamby from comment #4)
> I tested the
> firstname.lastname@example.org/ patch for 6.1.1 and it fixed the freezes.
FWIW, that patch was finally mainlined and is now queued for the next stable release with bigger changes, which likely will be released next week