Worked fine a week ago. Yesterday when I plugged headphones into my Asus laptop, I got sound both from headphones and speakers. Today after system crash (not sure what was the reason) when I plug headphones, speakers are muted automatically but there is no sound from headphones.
# lspci -v
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Device 124d
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at f7a10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: snd_hda_intel
# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC270 Analog [ALC270 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
I've found few suggestions to add options snd-hda-intel model=auto or options snd-hda-intel model=laptop to /etc/modprobe.d/alsa-base.conf. I did that too, restarted alsa-utils but that didn't help at all.
Also tried this superuser answer already. No luck either - auto mute is enabled. Also channels aren't muted:
┌───────────────────────────── AlsaMixer v1.0.25 ──────────────────────────────┐
│ Card: HDA Intel PCH F1: Help │
│ Chip: Intel PantherPoint HDMI F2: System information │
│ View: F3:[Playback] F4: Capture F5: All F6: Select sound card │
│ Item: Master [dB gain: -16.50] Esc: Exit │
│ │
│ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ ├──┤ ├──┤ ├──┤ └──┘ └──┘ ┌──┐ Enabled │
│ │OO│ │OO│ │OO│ │MM│ │
│ └──┘ └──┘ └──┘ └──┘ │
│ 49 100<>100 100<>100 100<>100 100<>100 │
│< Master >Headphone Speaker PCM Mic Boost S/PDIF Auto-Mute │
└──────────────────────────────────────────────────────────────────────────────┘
Basically I'm using vanilla Debian Wheezy with all updates installed. Everything worked fine few days ago. I can't recall if I installed any alsa related updates recently.
