Comment # 38 on bug 1206683 from Dave Plater

Extracted from Comment 22 This is identical to my problem but with an internal
usb wifi/bluetooth :
I agree w/ others that this seems related to or pointing at network interaction
and manifests itself in a graphics lockup - no clue why.

Just focusing on system #1 - I installed/booted 6.2~rc1-1.1.g769d7ad from
Kernel:HEAD and experienced the same lockup where I can boot to a login screen,
even login to a tty and sit there for extended time but as soon as I login via
lightdm on tty7 I get a hard lock w/in 45-60s (if not quicker).

So I decided to blacklist the r8169 module (for the dual 2.5GbE ports) and
unplug the USB Wifi adapter:

$ inxi --network
Network:
  Device-1: Realtek RTL8125 2.5GbE driver: N/A
  Device-2: Realtek RTL8125 2.5GbE driver: N/A
  Device-3: NetGear A6210 type: USB driver: mt76x2u

And it was up for 2 hours (and a few screensaver locks and monitor poweroffs)
w/o issue, other than what's a computer in 202X w/o internet access good for?
But plugging the NetGear device back in and logging in via lightdm caused it to
hard lock w/in 30-60s (again, I'm not sure how long it's taking but it's not
immediate and it's well under 5m). I ran dmesg before the hard lock and all it
showed between the ~40s of initial boot messages and the ~2h later output was
the fact that I plugged in the NetGear device.