I'm still doing bisection. Taking a lot of time. Meanwhile I've
collected some logs from good kernel:
APLAY:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: AD198x Digital [AD198x Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
ALSA:
Node 0x02 [Audio Output] wcaps 0x30311: Stereo Digital
Control: name="IEC958 Playback Con Mask", index=0, device=0
Control: name="IEC958 Playback Pro Mask", index=0, device=0
Control: name="IEC958 Playback Default", index=0, device=0
Control: name="IEC958 Playback Switch", index=0, device=0
Control: name="IEC958 Default PCM Playback Switch", index=0, device=0
Control: name="IEC958 Playback Source", index=0, device=0
Device: name="AD198x Digital", type="SPDIF", device=1
Converter: stream=8, channel=0
Digital:
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7e0]: 44100 48000 88200 96000 176400 192000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Delay: 3 samples
Connection: 3
0x01* 0x08 0x09
Node 0x03 [Audio Output] wcaps 0x405: Stereo Amp-Out
Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=0
Amp-Out vals: [0x00 0x00]
Converter: stream=0, channel=0
Power states: D0 D3
Power: setting=D0, actual=D0
Node 0x04 [Audio Output] wcaps 0x405: Stereo Amp-Out
Control: name="PCM Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="AD198x Analog", type="Audio", device=0
Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=0
Amp-Out vals: [0x27 0x27]
Converter: stream=8, channel=0
Power states: D0 D3
Power: setting=D0, actual=D0
Two things to note:
New kernel shows second device as "AD1984 Alt Analog", bot good kernel
shows it as "AD198x Digital".
New kernel shows two controls "Headphone Playback Volume" and "Speaker
Playback Volume". But old one shows single control "PCM Playback
Volume".
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https://bugs.launchpad.net/bugs/1324384
Title:
[Lenovo ThinkPad X61s] Speaker volume mutes itself in random intervals
after upgrade to 14.04
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