On 03/16/2012 03:06 AM, Tanu Kaskinen wrote: > On Fri, 2012-03-16 at 02:48 +0100, David Henningsson wrote: >> As I see it we have a couple of options. >> >> * no auto switching between HDMI and analog outputs at all. This is >> probably the simplest option. But maybe this is not the most user >> friendly option? >> >> * full switching. This requires not only profile switching on plug and >> unplug, but also switching between cards, i e moving streams between >> cards, and updating the default sink. More work, but definitely doable. >> I get the feeling that we want to avoid updating the default sink when >> it's not a direct user action though? > > I guess you are more familiar with the use cases, but wouldn't it be > common to attach a monitor without wanting to use the monitor's audio > output? If that's the case, I think auto-switching isn't really a good > idea. I don't know how common it is to want to use, vs does not want to use, the audio output of an HDMI monitor. That's part of why I'm asking :-) Also, I don't know if it's possible/common that the HDMI monitor lies to us about its audio capabilities, so that it would say that it has audio capabilities when it does not. I did however test connecting my DVI monitor over HDMI and that one correctly did not show up as having audio capabilities. > If you are going to do the auto-switching anyway, I think the default > sink should be changed too. Behaving differently with existing and > not-yet-existing streams doesn't make sense to me. > >> * switching only if the HDMI outputs are on the same card as the >> analog output. This is also simple to achieve, but might be confusing >> for users and support engineers? >> >> * switching from HDMI but never to HDMI: assuming we're not certain >> that the user wants to use HDMI audio just because (s)he plugged it in, >> we could quite safely assume that (s)he does not want to use an >> unplugged HDMI cable. However, if we want to do this consistently, we >> still suffer from having to set the default sink. >> >> What do you think? > > For what it's worth (I'm not a usability expert), to me the last option > sounds the best policy, with default sink updating. Cool, thanks for the input. What do others think? -- David Henningsson, Canonical Ltd. http://launchpad.net/~diwic
