Messages in this thread | | | Date | Tue, 05 Feb 2013 18:40:53 +0100 | From | Takashi Iwai <> | Subject | Re: 3.8-rc1 patch_cirrus 4.0 regression... |
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At Tue, 05 Feb 2013 17:34:15 +0100, Takashi Iwai wrote: > > At Wed, 6 Feb 2013 00:29:54 +0800, > Daniel J Blueman wrote: > > > > On 6 February 2013 00:16, Takashi Iwai <tiwai@suse.de> wrote: > > > At Wed, 6 Feb 2013 00:10:30 +0800, > > > Daniel J Blueman wrote: > > >> > > >> Hi Takashi, > > >> > > >> The v3.8-rc kernels have regressed from v3.7 with the quad-speaker > > >> arrangement on my Macbook Pro 10,1 - only the higher-frequency > > >> speakers work despite the front and rear channels being exposed in the > > >> mixer. > > > > > > Interesting. So you have a machine with 4.0 built-in speaker instead > > > of 2.1? Then we need to add a device-specific flag for it. Currently > > > the driver assumes 2.1 system blindly because majority of machines > > > have that. > > > > > > FWIW, the codec parser code has been totally rewritten for 3.9, so any > > > patch to 3.8 won't be applied to 3.9 (and vice versa)... > > > > > > Could you give alsa-info.sh output on 3.8 kernel? Then I'll try to > > > cook it for 3.9 (and maybe backport to 3.8). > > > > Here's the output from the current alsa-info.sh on 3.8-rc6 with the > > two cited patches reverted [1]; let me know if you'd like 3.8-rc6 > > pure. > > Thanks. > > > The sound is pretty impressive for a laptop when the low-frequecy > > speakers are enabled. > > Which program are you using for testing the surrounds? > I'm interested in it because the commit you reverted is basically > providing only an additional information for the channel map, and it > doesn't change anything else. It implies that some applications are > really referring to the chmap info.
Or, it might be that the mixer value is simply not set correct.
To be sure, could you try again 3.8-rc6 without reversing patches, adjust "Speaker" and "Bass Speaker" volumes properly, and retest? If it still doesn't work, please take alsa-info.sh snapshot at this state for comparing with the previous result.
thanks,
Takashi
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