Sascha Wilde wilde@intevation.de writes:
using a Lenovo L440 Laptop on a Lenovo Pro Dock the combined line-in/out jack at the docking station can not be used for output (input untested).
[...]
I guess quirks for the pins leading to the external dock jack are missing.
It seems the missing quirk is the same as for the T440: http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=1c37c...
Applying the pin config at module load time fixes the problem for me.
This hotfix as suggested by Jim Minter in: https://bugzilla.redhat.com/show_bug.cgi?id=1101386#c11 is
# cat >/lib/firmware/tpt440dock-patch.fw <<EOF [codec] 0x10ec0292 0x17aa501e 0
[pincfg] 0x16 0x21211010 0x19 0x21a11010 EOF
# cat >/etc/modprobe.d/hda-intel.conf <<EOF options snd-hda-intel patch=tpt440dock-patch.fw,tpt440dock-patch.fw,tpt440dock-patch.fw EOF
# rmmod snd_hda_intel # modprobe snd_hda_intel
So, alsa devs, could you please enable ALC292_FIXUP_TPT440_DOCK for ThinkPad L440 (codec 0x17aa, 0x501e)?
cheers sascha