Messages in this thread | | | Date | Tue, 18 Mar 2008 11:50:02 +0100 | From | Takashi Iwai <> | Subject | Re: intel-hda sound too quiet in linux-2.6.25-rc6 |
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At Tue, 18 Mar 2008 00:41:58 -0700, Adam J. Richter wrote: > > On Mon, Mar 17, 2008 at 11:23:59PM -0700, Adam J. Richter wrote: > > I have a motherboard that uses the AMD am690g chip set, > > which has a sound hardware called "azalia", which apparently is > > controlled by linux/sound/pci/hda/hda_intel.c. > > > > The audio works fine under linux-2.6.24.2. However, in > > linux-2.6.25-rc3 (haven't tried earlier ones) through 2.6.25-rc6 > > (released a couple of hours ago), the audio is barely audible unless I > > crank up my speakers to the maximum volume, at which point I can hear > > the music playing relatively quietly. In comparison, if I were to do > > that with 2.6.24.2, it would wake the neighbors. In both cases, > > this is with the volume set in aumix to 100 in both left and right > > (the maximum values). > > > > I haven't attempted to look through kernel changes from > > 2.6.24.2 to 2.5.25-rc3 yet, although I expect to over the weekend if > > nobody beats me to it. > > > > Adam Richter > > I want to add the results of a few simple tests: > > 1. Reverting only linux-2.6.25-rc6/sound/pci/hda/hda_intel.c to the > 2.6.24.2 version had no effect (sound was still very quiet). > > 2. Reverting linux-2.6.25-rc6/sound/pci/hda/*.[ch] to their > 2.6.24.2 versions worked (i.e., sound was lound again). > > 3. Other quick attempts at reverting various subsets of > linux/sound/pci/hda/*.[ch] have resulted only in compilation > errors.
That's vital to know which codec is used. lspci shows only the controller chip and it doesn't help debugging at all.
Please show the alsa-info.sh output. At best, get the alsa-info.sh outputs on both 2.6.24 and 2.6.25 kernels to compare.
thanks,
Takashi
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