** Summary changed:
- Intel 82801H sound card speakers not working
+ [Intel 82801H] sound card volume inaudibly low unless model=mitac specified
** Description changed:
I've tried everything to get this sound working. Headphones work fine,
they're loud and clear, but speakers don't work at all. I've recompiled
from alsa-source. I've recompiled from source files direct from ALSA.
I've tried adding various options in /etc/modprobe.d/alsa-base. Nothing
works.
What's more, alsamixer doesn't work. Whenever I try to run alsamixer, it
spits an error back at me (listed below), so I can't tell if the speaker
channel is just muted or not.
I'm running Kubuntu Hardy Beta, however the same problem occurred in
Gutsy.
sudo lspci -vv
...
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
Subsystem: Mitac Unknown device 8227
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 22
Region 0: Memory at fc200000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [70] Express Unknown type IRQ 0
Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
Device: Latency L0s <64ns, L1 <1us
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0
Link: Latency L0s <64ns, L1 <1us
Link: ASPM Disabled CommClk- ExtSynch-
Link: Speed unknown, Width x0
...
aplay -l
card 0: Intel [HDA Intel], device 0: ALC883 Analog [ALC883 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC268 Digital [ALC268 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 5: ALC268 Analog [ALC268 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
alsamixer
ALSA lib simple_none.c:1491:(simple_add1) helem (MIXER,'Headphone Playback
Switch',0,2,0) appears twice or more
alsamixer: function snd_mixer_load failed: Invalid argument
cat /proc/asound/modules
0 snd_hda_intel
+
+ [Update]
+ A patch was provided on the uptstreamed bug which resolves the issue. The
issue seems to be that the 82801H (8086:284b) is really a rebranded mitac card
but the driver doesn't pick this up properly. This patch is included in Ubuntu
now, but you have to append the following to your /etc/modprobe.d/alsa-base:
+
+ options snd-hda-intel model=mitac
+
+ For those on older Ubuntu versions like Hardy, you'll need to hand-patch
+ your alsa-driver to gain the support. See the upstream bug at
+ https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3886 for details.
--
[Intel 82801H] sound card volume inaudibly low unless model=mitac specified
https://bugs.launchpad.net/bugs/210865
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