Public bug reported:
On the Pi 3B, 3B+, and Zero 2W (probably 3A+ too, not yet verified), the
wlan0 interface is missing. Notably these models have different WiFi
interfaces (4343x on the 3B/Zero 2W, 4345x on the 3A+/3B+), but wlan0
*does* appear on the 4B and 5 (which use the 4345x as well).
Nothing apparent in dmesg output -- it's appears it doesn't even attempt
to load the brcmfmac firmware, which makes me suspect this is not an
issue in linux-firmware-raspi. Perhaps related to the sdhost interface
change? I have a vague recollection that sdhost was used for the wifi
interface on some models?
** Affects: linux-raspi (Ubuntu)
Importance: Critical
Status: Confirmed
** Changed in: linux-raspi (Ubuntu)
Milestone: None => ubuntu-25.04
** Changed in: linux-raspi (Ubuntu)
Status: New => Confirmed
** Changed in: linux-raspi (Ubuntu)
Importance: Undecided => Critical
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https://bugs.launchpad.net/bugs/2106230
Title:
wlan0 interface missing on pre-4B models
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