*** This bug is a duplicate of bug 1865962 ***
https://bugs.launchpad.net/bugs/1865962
Got a new zenbook UX431F and no wifi despite having a usually well supported
intel wifi.
The PCI id is 8086 02f0. No clear if this is a AC9462, AC9560, 22000. The
relation between the commercial name and the actual hardware remains mysterious
to me.
I eventually found a workaround. The important bit for you may be that
it seems that the driver shipped with the standard bionic kernel
5.3.0-46 loads the wrong firmware blob. It loads "iwlwifi-
Qu-b0-jf-b0-48.ucode" which crashes quickly, as seen in dmesg. Here is
why I believe it should load "iwlwifi-QuZ-a0-jf-b0-48.ucode":
* The backport-iwlwifi-dkms, version 7906 from
https://packages.ubuntu.com/search?keywords=backport-iwlwifi-dkms seems
in fact older than the driver found in kernel 5.3.0-46. I have to dkms
install --force to use it. It loads firmare "/lib/firmware/iwlwifi-
QuZ-a0-jf-b0-48.ucode" and does not crash. I can see the available ssids
in network manager. But dmesg shows an error setting up "wep" and it
seems unable to stay connected to my secure network.
* Then I tried version 8324 from https://launchpad.net/~canonical-hwe-
team/+archive/ubuntu/backport-iwlwifi. This one also loads
"/lib/firmware/iwlwifi-QuZ-a0-jf-b0-48.ucode" and all works fine! Too
bad it took me several hours to find it.
Anyway, none of the drivers that load "/lib/firmware/iwlwifi-
QuZ-a0-jf-b0-48.ucode" show a firmware crash in the intel chip. The
shipped driver loads "iwlwifi-Qu-b0-jf-b0-48.ucode" and crashes,
resulting in no wifi card being registered.
In case this helps.
- Leon
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https://bugs.launchpad.net/bugs/1864188
Title:
Intel Wireless-AC 9462 [8086:02f0] Subsystem [8086:42a4]: After the
upgrade of 19.10 on 2020-02-18, wifi does not exist
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