Don't black screen when on call with speakerphone

actually the bug is not with the proximity sensor. The issue is whenever you are on an active call with speaker phone enabled, the screen should not fully blank and the phone shouldn't lock. The screen should just dim but not lock when on an active call

Is there a spec anywhere that it says that "the screen should only dim"? That would be behaviour different to any other phone out there? Input shouldn't work when proximity is triggered during a call either?

Or by "dim, but not lock" do you mean that it should turn the display off completely, just not lock?

I don't think there is a spec.
I'm comparing to what iphone does. When on a call (with speakerphone enabled or not) and you lay the phone down on the table, the screen never locks. The screen does dim slightly after some seconds but never fully goes black. I think we should do the same. If we can't dim the screen then just leave it fully on.

So I think we have two bugs 1) we turn off the screen completely and 2) we lock the phone

Not sure what you mean about input not working when proximity is triggered during a call?

Sorry, I mixed it up with a bit with the normal handset use, not speakerphone. So it is related to proximity in that if during a call, it should only turn off completely on proximity, otherwise should stay on but dim.

This can be handled by a powerd request by the dialer app I believe. Same as `powerd-cli display on` does. Not sure if the switch to u-s-c handling brightness brought over the right behavior of dimming but not powering off?

From my tests it looks like no, u-s-c does not handle this properly, does not dim at all (it's only the complete power-off timeout that should be disabled).

Ah, and that means that unity8 is not really involved and the branch is actually unrelated in that if the screen does not power off, then unity8 wouldn't lock anyway.

The bug in unity-system-compositor:

`powerd-cli display on` (no "bright") keeps the screen in full brightness state. It should dim as usual, just not power off.

Between u-s-c and telephony-service (?):

The display lock should contain proximity and display on (not bright).

no change needed so far communication of necessary powerd state changes has to happen through telepathy-ofono

There is a related bug: https://bugs.launchpad.net/ubuntu-ux/+bug/1347913