I have found some additional information here: https://docs.kernel.org/sound/codecs/cs35l56.html
> Calibration disabled due to missing firmware controls > > Driver was not able to write EFI calibration data to firmware registers. > This typically means that either: > > The driver did not find a suitable wmfw for this hardware, or > The amplifier has already been patched with firmware by something > previously, and the driver does not have control of a hard RESET line to be > able to reset the amplifier and download the firmware files it found. This > situation is indicated by the device identification string in the kernel log > shows “(patched=1)” I have been able to locate wmfw files matching the name schema here: https://archlinux.org/packages/core/any/linux-firmware/files/ > usr/lib/firmware/cirrus/cs35l56-b0-dsp1-misc-17aa233c-amp1.bin.zst > usr/lib/firmware/cirrus/cs35l56-b0-dsp1-misc-17aa233c-amp2.bin.zst > usr/lib/firmware/cirrus/cs35l56-b0-dsp1-misc-17aa233c.wmfw.zst I will try to download and install them. Maybe this could be helpfull in solving this problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2109925 Title: No audio support for Cirrus Logic cs35l56 on Lenovo Thinkpad X9-14 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2109925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
