Comment 15 for bug 2017790

I had a similiar problem, i removed all the existing linux-modules*iwlwifi* packages then installed backport-iwlwifi-dkms and it worked like a charm
[ 3218.859990] Intel(R) Wireless WiFi driver for Linux
[ 3218.860083] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[ 3218.863823] iwlwifi 0000:00:14.3: api flags index 2 larger than supported by driver
[ 3218.863831] iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 0.0.2.36
[ 3218.864262] iwlwifi 0000:00:14.3: loaded firmware version 72.a764baac.0 so-a0-gf-a0-72.ucode op_mode iwlmvm
[ 3218.937032] iwlwifi 0000:00:14.3: Detected Killer(R) Wi-Fi 6E AX1675i 160MHz Wireless Network Adapter (211