Red Hat Bugzilla – Bug 508442
default mixer setting too low on Intel 82801I (ICH9 Family) HDA [8086:293e]
Last modified: 2010-06-28 09:19:32 EDT
Description of problem:
Sound output through pulseaudio to builtin laptop speakers is too low -- when set to maximum sound is audible, but should be higher.
Pushing 'speaker' setting through alsamixer fixes the problem. Sound played through pulseaudio has a much higher maximum, yet mutes when reducing level to 0.
Version-Release number of selected component (if applicable):
00:1b.0 0403: 8086:293e (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
Subsystem: Hewlett-Packard Company Device 30f4
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 22
Region 0: Memory at df000000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
Created attachment 349640 [details]
Output of alsa-info
Created attachment 349641 [details]
amixer output with default settings
Created attachment 349642 [details]
amixer output after manually changing volume
I have the same hardware and the same problem. The "speaker" mixer control must be maxed for sound to be audible.
However, maybe this is more complicated than only setting sane defaults. Even with "speaker" maxed, I get no sound at about 50% of the master control. This is bad because I lose "resolution" when setting the sound, it gets too loud too fast. I was not able to fix this using alsa mixer controls.
Anyway, this may be unrelated. Sane defaults would surely help.
For me, this appears to have been fixed in the alsa-lib-1.0.21-3.fc11.x86_64 update. As far as "alsactl init" allows me to test it.
Zbyszek, can you check it?
Nope, alsa-lib-1.0.21-3 doesn't seem to work:
# rpm -q alsa-lib
Unknown hardware: "HDA-Intel" "Nvidia MCP78 HDMI" "HDA:111d76b2,103c30f6,00100302 HDA:10de0006,10de0101,00100000" "0x103c" "0x30f4"
Hardware is initialized using a guess method
And the guess gives 'speaker' at 50% as before.
Yes, you are right. What I have observed is that "alsactl init" doesn't touch the speaker control. If it is at x%, it stays there. So, maybe the problem is that there isn't a default value defined for this control.
(In reply to comment #7)
> Yes, you are right. What I have observed is that "alsactl init" doesn't touch
> the speaker control. If it is at x%, it stays there. So, maybe the problem is
> that there isn't a default value defined for this control.
Actually here "alsactl init" does touch 'speaker': when I run it, it sets 'speaker' actually to exactly 58%.
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