[Bug 1912385] Re: No wlan interfaces found on CM4 after firmware update

[Juerg Haefliger]

Your problem is the upgrade of pi-bluetooth:
Unpacking pi-bluetooth (0.1.15ubuntu0~20.04.1) over (0.1.10ubuntu6-lobo) ...

0.1.10ubuntu6-lobo is not an official Ubuntu package version. Where did
it come from? It seems to add some diversions that are incompatible with
the new version 0.1.15ubuntu0~20.04.1.

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https://bugs.launchpad.net/bugs/1912385

Title:
  No wlan interfaces found on CM4 after firmware update

Status in linux-firmware-raspi2 package in Ubuntu:
  New

Bug description:
  During testing of image http://cdimage.ubuntu.com/ubuntu-server/focal
  /daily-preinstalled/pending/focal-preinstalled-server-
  arm64+raspi.img.xz it was noted that the WLAN interface was missing.

  It appears that the introduction of package version 3-0ubuntu1~20.04.1
  results in breakage of WLAN on CM4 devices.

  No interface is listed on completion of boot.

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