'Twas brillig, and Julian Sikorski at 19/06/11 09:38 did gyre and gimble: > Hi, > > this should be the final thread concerning this laptop. As I mentioned > earlier, it has 2.1 speakers, a built-in microphone and the following > connectors: > - headphone out > - microphone in; can be switched to center/lfe out > - spdif out; can be switched to rear speaker out > - line in; can be switched to side speaker out > pavucontrol offers more options, some of which seem superfluous. In the > output devices tab, you can pick from analog speakers, analog output and > analog headphones (last 2 seem the same). These elements come directly from ALSA. Your amixer -c0 output will probably show that the relevant kcontrols exist to enable all these ports. It's perhaps something that needs to be removed from alsa to prevent it bubbling up to PA? > In the input devices tab, you > can pick microphone 1, microphone 2 and linear input. While it seems > technically right (I don't have an external mic here to test), could it > be possible to rename them to internal and external mic? #2 is the > internal one. Yeah, this is actually already the case in git master. The original reasoning is that the ALSA controls are very often mislabelled or lacking sufficient information to determine which is which (even if some hardware is labelled fine, we aim to provide a consistent experience to everyone even if that's not as perfect as it could be on some given hardware!). David has been pushing a lot of fixes to the ALSA layer to fix the naming and thus Internal vs External Mic labels are now what is shown in PA too. > Finally, the profiles in the Configuration tab do not seem to reflect > that the machine is capable of up to 7.1 sound. I have > - analog stereo duplex > - analog stereo output > - digital stereo output (iec598) and analog stereo input > - digital stereo duplex (iec598) > - analog stereo input > - off > in there. This seems to be completely off what windows offers, so I hope > the information I provided will be enough to fix the profiles. > Otherwise, I am happy to provide more data. We simply try to open the alsa "devices" surround51, surround71 etc. to work out if the card is capable of 5.1 or 7.1 sound. If this fails the profiles are not offered. I would suggest that there may be some special switch you need to turn on in alsa to enable surround51 to work properly (I have seen this on some h/w). At the moment we don't handle this too well, so we probably need to work out a way of doing this. The output from amixer -c0 would likely offer some clues. Cheers Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited [http://www.tribalogic.net/] Open Source: Mageia Contributor [http://www.mageia.org/] PulseAudio Hacker [http://www.pulseaudio.org/] Trac Hacker [http://trac.edgewall.org/]
