Takashi Iwai wrote: > Matej Laitl wrote: > > Yes, this "slightly better" patch applied on top of your first patch > > against hda_codec.c did the trick, but with some side-effects: > > * the "Speaker" switch now mutes/unmutes speakers > > * muting/unmuting "Front" channel now has zero effect (in 2.6.24 it had > > the same effect as the "Speaker" switch now has) > > * changing volume on "Front" channel now affects volume in headphones > > (was not so in 2.6.24) > > This is what your BIOS sets up. The main output is connected to the > docking station. That's why "Front" (a silly name for ALC262; it > should read "Line Out", maybe will be renamed in later versions) > switch doesn't work. > OTOH, all outputs (speaker, headphone and line-outs) use the same DAC, > and this is controlled via line-out volume, i.e. "Front" volume. I was actually wrong when saying the "Front" channel did not influence HP-out in 2.6.24 - it did, so no regressions here. > > So there are now 3 vol controls that affect both speakers and headphones: > > * Master (which appeared somewhere between 2.6.24 and .25-rc1), when set > > to zero, the sound is still audible in speakers and headphones > > This must be the behavior of the codec chip... Did "Front" volume 0 > mute in the earlier version? If not, it actually doesn't mute with > the lowest volume. Use the master switch to mute. > > Anyway, attach the alsa-info.sh output at the moment Master volume is > zero. No, setting Master and/or Front channel to 0% did not mute audio in any version I used. I'm now listening to music with Master=0% and Front=0%, the sound is at well audible volume. Pastebin for this configuraion is here: http://pastebin.ca/901459 However I don't consider it a problem, it's mutable by PCM and HP/Speaker switches. Funny thing is that resulting volume of those 3 setting is equal: * Master=0, Front=0 * Master=100%, Front=0 * Master=0, Front=100% But when both set to let's say 50, changing one of these audibly affects resulting volume. > > * PCM, working as expected (0 volume = no sound) > > * Front (0 volume = still audible sound) > > > > So it is usable now (and those Speaker and Headphones on/off switches > > make sense), but kinda suboptimal. (is it my BIOS who is to blame?) > > Yep. For the perfect solution, you'd need to create a static "patch" > for this particular model instead of auto-configuration. Then you can > adjust everything as you like. Would it be easy to do this in a robust way? If not, it's not worth it. On a side note, I experience increased noise when not playing anything during 2.6.24 -> .25-rc1 upgrade, but this is probably completly unrelated to today's problem. Anyways, thanks for your effort and patches, Takashi. Matej Laitl _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
