Hi, after upgrading from 2.6.24 to 2.6.25-rc1, I lost headphone-out sound output of my Intel HDA card - it is quiet no matter what the mixer settings are.
After playing wit git bisect a bit, I narrowed it down to commit f889fa91ad47e "[ALSA] hda-codec - Improve the auto-configuration". [1] It works okay with tree as of previous commit 69b1f1e8337fc9.
First lines from /proc/asound/Intel/codec#0: Codec: Realtek ALC262 Address: 0 Vendor Id: 0x10ec0262 Subsystem Id: 0x17340000 Revision Id: 0x100202 No Modem Function Group found Default PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Default Amp-In caps: N/A Default Amp-Out caps: N/A GPIO: io=4, o=0, i=0, unsolicited=1, wake=0 IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0 IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0 IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0 IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0
The box is Fujitsu-Siemens Esprimo Mobile M9400 laptop.
[1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=...
Regards, Matej Laitl