Ubuntu
linux-firmware package

  1. Bug #2049220
  2. Comment #1

Comment 1 for bug 2049220

Revision history for this message
Rudi Daemen (fludizz) wrote :

As per https://bugs.launchpad.net/bugs/2049303 - another workaround for Ubuntu 22.04.3 LTS is switching to the 6.2 HWE Kernel.

For me, I noticed the issue after my system got updated from the 6.2 HWE kernel to the 6.5 HWE Kernel. Rebooting the system back to the previous 6.2 HWE Kernel resolved the problem.

Note that both kernel images leverage the same firmware version as that's provided via the linux-firmware package:
mt7921e 0000:05:00.0: WM Firmware Version: ____010000, Build Time: 20220209150915

So something specific with the 6.5 HWE Kernel module mt7921e in combination with this specific firmware version breaks multicast. Seen that updating the firmware image resolves the issue, it points to a bug in the firmware and not the kernel module.