I too have been unable to find documentation or repos with more information about how this is supposed to work.
I think what we're running into here (in an FDE/TPM scenario with the snap kernel) extends far beyond this particular firmware problem as well, actually. For example: 1) Installing VirtualBox kernel modules isn't straight-forward either due to the destination area being read-only. 2) Similar with fwupdmgr – even fwupd from snap can't install updates due to the read-only restrictions. For example, trying to update my laptop's EC results in fwupdmgr failing with "failed to write-firmware: Failed to create '/run/mnt/ubuntu-seed/EFI/fwupd/fw': Permission denied" What I _have_ found is that the firmware included in the pc-kernel snap comes from the firmware-sof-signed package. The odd thing is the .deb version of _the same_ package contains the files we need. But they're not included in the pc-kernel snap, which I simply don't understand. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2092363 Title: Missing (but referenced) SOF firmware in pc-kernel – No Audio To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-kernel-snaps/+bug/2092363/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
