Comment 11 for bug 1804841

I thought it might be worth to try the other versions of the FW.
So I renamed the files like:
sudo mv /lib/firmware/iwlwifi-8265-36.ucode /lib/firmware/DONOTLOAD-iwlwifi-8265-36.ucode

Eventually I ended up with:
-rw-r--r-- 1 root root 1811984 Apr 24 2018 /lib/firmware/DONOTLOAD-iwlwifi-8265-22.ucode
-rw-r--r-- 1 root root 2234528 Dez 5 2017 /lib/firmware/DONOTLOAD-iwlwifi-8265-27.ucode
-rw-r--r-- 1 root root 2307104 Dez 6 2017 /lib/firmware/DONOTLOAD-iwlwifi-8265-31.ucode
-rw-r--r-- 1 root root 2440780 Apr 25 2018 /lib/firmware/DONOTLOAD-iwlwifi-8265-34.ucode
-rw-r--r-- 1 root root 2498044 Jan 11 10:03 /lib/firmware/DONOTLOAD-iwlwifi-8265-36.ucode
-rw-r--r-- 1 root root 2389968 Nov 17 2017 /lib/firmware/iwlwifi-8265-21.ucode

All versions >=22 Failed, no change in behavior at all.
When running with only 21 left it failed to load at all, see the following dmesg.

[ 5.651536] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-36.ucode failed with error -2
[ 5.651651] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-35.ucode failed with error -2
[ 5.652037] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-34.ucode failed with error -2
[ 5.652050] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-33.ucode failed with error -2
[ 5.652057] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-32.ucode failed with error -2
[ 5.652065] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-31.ucode failed with error -2
[ 5.652072] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-30.ucode failed with error -2
[ 5.652080] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-29.ucode failed with error -2
[ 5.652087] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-28.ucode failed with error -2
[ 5.652095] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-27.ucode failed with error -2
[ 5.652103] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-26.ucode failed with error -2
[ 5.652111] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-25.ucode failed with error -2
[ 5.652119] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-24.ucode failed with error -2
[ 5.652127] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-23.ucode failed with error -2
[ 5.652135] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8265-22.ucode failed with error -2
[ 5.652137] iwlwifi 0000:04:00.0: no suitable firmware found!
[ 5.652140] iwlwifi 0000:04:00.0: minimum version required: iwlwifi-8265-22
[ 5.652142] iwlwifi 0000:04:00.0: maximum version supported: iwlwifi-8265-36
[ 5.652144] iwlwifi 0000:04:00.0: check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

I thought, well then I run it without recent FW load, but then the wireless adapter doesn't initialize at all.

No chance to configure it in cmdline or UI tools.

Therefore it seems I know no way to get wireless to work at all on my T580 :-/
is there a Wireless dongle that works well with Linux?

If there is anything I can try to resolve this please let me know.