On 6 February 2013 01:40, Takashi Iwai <ti...@suse.de> wrote: > 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 <ti...@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.
My apologies! We do now have "Bass Speaker" which affects both bass speakers. It was always being restored to level 0 and works when set up. There is a "Subwoofer" slider in addition to "Balance" and "Fade" in the GNOME mixer UI which is greyed out; presumably this is intended as the same mixer control? Dan -- Daniel J Blueman -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
