[pulseaudio-tickets] [Bug 93946] Changing device profile to HDMI is reset to default after monitor goes into powersave

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93946

--- Comment #58 from Tanu Kaskinen <tanuk at iki.fi> ---
(In reply to Arun Raghavan from comment #57)
> My primary concern with this patch series is that it is very common to plug
> in multiple HDMI devices to a single laptop (monitors, projectors, ...), and
> it appears that a preference to route to a single device ends up applying to
> all devices.
> 
> David had mentioned that this *may* be a problem. I'd go as far as to say
> that this is definitely a problem.

A worse problem than what my patches fix? I don't think so.

> So as I understand it, we were looking at solving two problems:
> 
> 1. Non-existent speakers when there is a speaker control

My patches don't aim at solving that.

> 2. DPMS causing an HDMI unplug
> 
> For the first, I concur with David about this not being an issue we should
> try to solve, and we should let underlying layers fix this properly. *Maybe*
> we could look at having a pavucontrol option to mark a system as not having
> internal speakers (and store this on the card in some way).
> 
> For the second, I don't have a good solution. Yes, it would be a _lot_
> better to be able to distinguish between the DPMS and unplugged states.
> There seemed to be a suggestion that this is possible at the graphics driver
> level. Is that true?

I don't know. Was it suggested in this bug thread? I tried to search for
"driver", "kernel" and "graphics", and I didn't find a place where that would
have been suggested.

> As an alternative, it may make sense to at least tie the preferred port
> setting with the corresponding device names from ELDs. That would prevent us
> from explicitly having to route to and away from every HDMI device
> explicitly. It's still not great since ELDs lie, and it's common to have
> multiple monitors of the same type being connected to (e.g. an office with
> homogenous monitor setups, but you only have headphones connected to your
> own workstation).

Creating separate ports based on ELD seems like an improvement for some later
time.

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/pulseaudio-bugs/attachments/20160430/3809bb2b/attachment.html>