Lenovo ZHAOYANG E46
/etc/modprobe.d/alsa-base.conf :
options snd-hda-intel model=auto
$sudo head -1 /proc/asound/card0/codec#0
Codec: IDT 92HD81B1C5
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ lspci -v
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High
Definition Audio (rev 05)
Subsystem: Lenovo Device 38af
Flags: bus master, fast devsel, latency 0, IRQ 46
Memory at f0620000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev
a1)
Subsystem: Lenovo Device 391a
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at cdefc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ more /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf0620000 irq 48
1 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xcdefc000 irq 17
$ more /proc/asound/modules
0 snd_hda_intel
1 snd_hda_intel
AlsaMixer v1.0.24.2
FYI,
Sound volume is very low. After suspending, the sound volume returned to normal
status. Then after i reboot, the sound turn to very low again. When running
ubuntu in virtualbox vm machine and choosing " ac'97" as the sound option, the
sound volume is normal and it has no sound at all after switching into "intel
HD-audio" as the sound option.
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https://bugs.launchpad.net/bugs/993257
Title:
IDT 92HD81B1C5, Speaker, Internal] Playback volume very low
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