Proximity sensor during call doesn't allow dialing options

[Julia Palandri]

I'm not sure if this is a duplicate of any of the proximity bugs already reported (https://bugs.launchpad.net/canonical-devices-system-image/+bug/1512100, https://bugs.launchpad.net/canonical-devices-system-image/+bug/1493574, https://bugs.launchpad.net/canonical-devices-system-image/+bug/1524648, https://bugs.launchpad.net/canonical-devices-system-image/+bug/1523308 to name a few).

On arale, rc-proposed I made a call, but at a certain point I needed to choose an option on an IVR. When I took the phone off my ear, the screen would indeed wake up, but when I wanted to press a key number (after some trouble to bring up the keyboard altogether) I wouldn't be able because the screen would turn off. Eventually I managed to "trick" the phone being quick, but it took me some time. Hanging up was somehow less painful.

Maybe a matter of adjusting the distance from which the screen turns off during calls?

[Jean-Baptiste Lallement (jibel)]

Thanks for your report.

It looks very similar to bug 1493574. Could you please try the app recommended in comment 35 to check if the sensor works properly?

[kevin gunn (kgunn72)]

assigning alf to take a look, he's been sifting through a lot of the oddities around prox sensor.

[Lorn Potter (lorn-potter)]

It seems that most of our proximity drivers have only close/far and not the full ir reflectance value that would be needed for obtaining a better distance indication.
That said, the driver could possibly be changed to toggle at a closer or greater distance.

But to me, this seems like it is some undefined behavior related to #1543948

Sadly, I do not have an arale to test.