At Thu, 26 Jun 2008 09:02:02 +0100, Marco Vermeulen wrote:
On Thu, 2008-06-26 at 07:51 +0200, Takashi Iwai wrote:
It'd be helpful if we can share the solution in a bit more details...
thanks,
Takashi
Sure, no problem. The MacBook in question is the black model, version 3.1. The lspci dump of the sound card is as follows:
00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 03) Subsystem: Apple Computer Inc. Device [106b:00a1] 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: 256 bytes Interrupt: pin A routed to IRQ 20 Region 0: Memory at d0700000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel
On comparing my dump with Leonardo's I found that they were identical. Now I knew that it could be done.
I then added the following line to my /etc/modprobe.d/sound file: options snd_hda_intel model=mbp3
This worked fine on openSuse 11.0, but I simply could not get the same thing to work on Ubuntu Hardy. Perhaps the mactel patches were not applied to the kernel or something?
I guess so. openSUSE 11.0 has the backport of HD-audio codes from 2.6.26 and fixes.
Apart from that, the volume still seems to be very low, but sound quality is perfect.
Hope that sheds some light on it all,
There is already a quirk for your device, but maybe it's a wrong value. Could you run alsa-info.sh with --no-upload option and attach the generated file for a more comprehensive information? The script is found in /usr/share/doc/packages/alsa on openSUSE 11.0, or http://www.alsa-project.org/alsa-info.sh
thanks,
Takashi