Keeping fingers on the invisible Android buttons makes the screen unusable

[Michal Predotka]

I'm using bq phone here.

Steps to reproduce:
1. put your finger on the invisible Android button under the phone screen
2. try to do anything on the screen

Outcome:
The screen does not respond to touch

Expected outcome:
The screen does respond to touch

Short video attached

[Michael Zanetti (mzanetti)]

This seems to happen only with the production units and not with the prototypes.

[Michal Predotka (mpredotka)]

Hmm... the video does not work here. Check it on youtube then: https://youtu.be/JqgysF1ukko

[Zygmunt Krynicki (zyga)]

I can reproduce this on a retail unit running r20 image. It doesn't happen on prototype running same r20.

[Jonathan Cave (jocave)]

Version: ubuntu-touch/stable/bq-aquaris.en r20 krillin

Confirmed on production unit

[John McAleely (john.mcaleely)]

@pat - can you triage this for a milestone please?

[John McAleely (john.mcaleely)]

I'm working with the OEM in project bug #1438132. I will update this public bug with progress and results as I have them.

[Pat McGowan (pat-mcgowan)]

marking it for this week just so ts not lost

[Ricardo Salveti (rsalveti)]

Can someone that is able to reproduce this bug run the following command and paste the output in this bug?

$ cat /sys/devices/platform/mtk-tpd/chipinfo

[Alan Pope 🍺🐧🐱 🦄 (popey)]

From my production one:-

ID:0x0 VER:0x15 IC:ft5336 VENDOR:ckt (dc)

From my android flashed one:-

ID:0x0 VER:0x40 IC:ft5336 VENDOR:ckt (dc)

[Michal Predotka (mpredotka)]

On my bq:
ID:0x0 VER:0x15 IC:ft5336 VENDOR:ctk (dc)

[Richard Somlói (ricsipontaz)]

bq:
ID:0x0 VER:0x15 IC:ft5336 VENDOR:ctk (dc)

[John McAleely (john.mcaleely)]

When this fix propagates to an OTA, you'll be able to confirm it worked by:

$ cat /sys/devices/platform/mtk-tpd/chipinfo

and then observing:

ID:0x0 VER:0x40 IC:ft5336 VENDOR:ckt (dc)

is reported. Of course, you'll also find the touch screen works properly!