iwlwifi/AC 3165 stopped working, not showing any APs/network

[jmbreuer]

Until about two weeks ago, iwlwifi/AC 3165 worked perfectly well in my Lenovo ideapad 700-17ISK.

As part of a larger (mostly KDE) update some weeks ago, I noticed that the WiFi icon (KDE networking status icon) would show "disconnected" even when I was connected to a perfectly working WiFi. At the time, I did not debug this further, thought it might be a cosmetic bug and possibly fix itself over a round of updates.

This week, I got and installed another round of mostly KDE (6) updates. Now today I'm working in a different place that only has WiFi (at home / at my usual desk I use wired ethernet).

And it turns out, that right now, I cannot see any WiFi networks.

dmesg shows [only] this related to iwlwifi:

Code: Select all

[    4.295163] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[    4.299076] iwlwifi 0000:02:00.0: Detected crf-id 0x0, cnv-id 0x0 wfpm id 0x0
[    4.299186] iwlwifi 0000:02:00.0: PCI dev 3166/4210, rev=0x210, rfid=0xd55555d5
[    4.307940] iwlwifi 0000:02:00.0: Found debug destination: EXTERNAL_DRAM
[    4.307943] iwlwifi 0000:02:00.0: Found debug configuration: 0
[    4.308196] iwlwifi 0000:02:00.0: loaded firmware version 29.4063824552.0 7265D-29.ucode op_mode iwlmvm
[    4.381728] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 3165, REV=0x210
[    4.395882] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    4.396450] iwlwifi 0000:02:00.0: Allocated 0x00400000 bytes for firmware monitor.
[    4.404665] iwlwifi 0000:02:00.0: base HW address: 98:54:1b:67:e9:54, OTP minor version: 0x0
[    4.503943] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[  303.287387] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[  303.374889] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[  303.376753] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[  303.387039] iwlwifi 0000:02:00.0: Registered PHC clock: iwlwifi-PTP, with index: 0
[  303.450099] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[  303.537325] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[  303.538906] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[  715.061428] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[  715.148847] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM

"nmcli d wifi" does not show any networks, though I know for a fact that there's at least one here - the one my phone is using, which I can sort-of help myself with using USB tethering.

How do I go about figuring this out/debugging it further?

The last time I had to touch WiFi stuff in that depth the software stack was completely different. There's no "wl scan" anymore, for instance.