[arch-general] External monitors are no longer detected (Intel graphics)
lists at sapience.com
Tue Jul 2 17:48:15 UTC 2019
> Not only GPUs, but also WiFi cards. Got 8265 on Thinkpad T480 and 5G
> speeds are awful. When you're trying to download via 5G network
> something big - connection interrupts and won't come back until
> NetworkManager is restarted, also there are plenty of errors in dmesg.
> All fine on 5.0.x and LTS kernel (4.19.x), only 5.1.x are affected.
Check youor mesages and look for EDC asset. There is a fix teed up which
may help your case.
I have seen this "EDC assert" issue with 8265  and the fix is given
in comment #42. I have tested it on kernel 5.2-rc7 and works fine.
This impacts all pre-9000 intel wifi cards.
This will NOT make it into 5.2, as Emmanual G points out, as its late in
the cycle; presumably will be in 5.2.1 and 5.3.
A work around you might try is to add this iwlwifi option - then reboot.
# cat >> /etc/modprobe.d/iwlwifi.conf
options iwlwifi swcrypto=1
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