I can confirm this is a problem with the package: The 2025.05.1-1ubuntu0.1 upgrade of firmware-sof contains incorrect LNL FW binary (/lib/firmware/intel/sof-ipc4-lib/lnl/intel-signed/drc.llext) causing broken audio for users upgrading Intel LNL laptops from original 25.10 package to this update:
We have received multiple upstream reports of this issue: - https://github.com/thesofproject/sof/issues/11076 - https://github.com/thesofproject/linux/issues/5893 Inspecting the 2025.05.1-1ubuntu0.1 binaries we not installed file /usr/lib/firmware/intel/sof-ipc4-lib/lnl/intel-signed/drc.llext.zst Is incorrect and not compatible with base firmware file shipped in this package. When installed, this will lead to a DSP FW panic and loss of audio for end users. Upgrading to upstream FW package will help to fix the problem. Looking at the source package, the source package has multiple versions of the "drc.llext" binary, but the wrong one copied to the binary: 9456b5416ce1d70d1d15d658135bc6c9 ./sof-ipc4-lib-v2.14.1/lnl/intel-signed/drc.llext 86ad3c2a9b682fc2ad28b0240ae6b314 ./sof-ipc4-lib/lnl/intel-signed/drc.llext The first one is the correct 2.14.1 binary, while latter one is old 2.13 binary. Upstream recommendation is to update all files from a sof-bin release and not cherry-pick individual files like is done in upstream Debian packages. We already had https://bugs.launchpad.net/ubuntu/+source/firmware-sof/+bug/2121849 occur earlier when individual files were cherry-picked. ** Bug watch added: github.com/thesofproject/sof/issues #11076 https://github.com/thesofproject/sof/issues/11076 ** Bug watch added: github.com/thesofproject/linux/issues #5893 https://github.com/thesofproject/linux/issues/5893 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161105 Title: firmware-sof-signed 2025.05.1-1ubuntu0.1 DSP panic! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firmware-sof/+bug/2161105/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
