At Tue, 27 Nov 2007 16:19:56 +0100, I wrote: > > At Fri, 23 Nov 2007 17:45:21 +0100, > Jan-Simon Möller wrote: > > > > Hi ! > > With the patches, the sound works - well done! > > But I need to make sure the PCM volume is max @ 50% . > > If its over 50% sound is clipped and ugly (overload?). > > Looks like so. Mixer apps (e.g. alsamixer) can show its dB value > instead of percent. Check the dB level shown there. > > The patch below may fix this issue. Give it a try. Argh, the patch is wrong. Use the below instead. Takashi diff -r 17223a4918b4 pci/hda/patch_conexant.c --- a/pci/hda/patch_conexant.c Tue Nov 27 15:27:17 2007 +0100 +++ b/pci/hda/patch_conexant.c Tue Nov 27 16:50:37 2007 +0100 @@ -826,6 +826,17 @@ static int patch_cxt5045(struct hda_code spec->init_verbs[0] = cxt5045_test_init_verbs; #endif } + + /* + * Fix max PCM level to 0 dB + * (originall it has 0x2b steps with 0dB offset 0x14) + */ + snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT, + (0x14 << AC_AMPCAP_OFFSET_SHIFT) | + (0x14 << AC_AMPCAP_NUM_STEPS_SHIFT) | + (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) | + (1 << AC_AMPCAP_MUTE_SHIFT)); + return 0; } _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
