Takashi Iwai <tiwai@suse.de> writes:

> +	SND_PCI_QUIRK(0x1179, 0xff31, "Toshiba P105", CXT5045_LAPTOP_MICSENSE),

This patch seems to fix the problem for me! Thanks. I thought I'd
previouslyu tried model=laptop-micsense but I obviously messed that 
up somehow. FWIW I enclose the alsa-info.txt.

Mark