[alsa-devel] No sound on Thinkpad T440s in Docking Station

[Takashi Iwai]

At Thu, 26 Jun 2014 15:23:35 -0400 (EDT),
Jim Minter wrote:
> 
> Hello,
> 
> I'm getting the same issue reported by Joschi in May, but with a docked T540p.  I can confirm that doing the following fixes the issue for me:
> 
> ==== 8< ====
> # cat <<EOF >/lib/firmware/t540p.fw
> [codec]
> 0x10ec0292 0x17aa2210 0
> 
> [pincfg]
> 0x16 0x21211010
> 0x19 0x21a11010
> EOF
> 
> # cat <<EOF >/etc/modprobe.d/hda-intel.conf
> options snd-hda-intel patch=t540p.fw,t540p.fw,t540p.fw
> EOF
> 
> Then rmmod/modprobe the snd-hda-intel kernel module, or just reboot.
> ==== 8< ====
> 
> I can see http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=1c37c22332a2d2c1b4ab32177a4f847c7fe06e38 which I presume resolves this problem for T440s and T440p users.
> 
> Please could an additional line, I'm guessing as follows, be added to sound/pci/hda/patch_realtek.c to include T540p users in this happy group?
> 
> +	SND_PCI_QUIRK(0x17aa, 0x2210, "Thinkpad T540p", ALC292_FIXUP_TPT440_DOCK),
> 
> Thanks!
> 
> Jim

OK, I applied the fixup now.  Thanks for reporting!


Takashi