We are working some spurious event issues at bug #1549701 and bug
#1550050, lets hope that is the same root cause
** Changed in: canonical-devices-system-image
Status: New => Confirmed
** Changed in: canonical-devices-system-image
Assignee: (unassigned) => Pat McGowan (pat-mcgowan)
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Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1552844
Title:
Ghost touch events on MX4
Status in Canonical System Image:
Confirmed
Status in unity8 package in Ubuntu:
Incomplete
Bug description:
When I attempt to use the phone I haven't used for a bit, I am
sometimes unable to unlock it because it seems to be processing touch
events (a very long series of them) even though I am not touching the
screen at the moment. It usually ends up in it being locked due to too
many wrong unlock attempts, and I end up force-rebooting it.
Since it's locked, I can't even get to adb shell. It still registers
actual touch events, just interleaved with these ghost touches, and
one time I managed to unlock it, but couldn't do any more debugging
because I wasn't near the computer at the time. It also made it worse
because now it was doing random touches in my applications, initiating
calls and such.
I can reproduce this most easily if I carry the phone in my trouser
pocket for a while, though I don't always get it. I suspect hardware
still detects the phone rubbing against my inner trousers as touch
events, and I suspect the lock button is pressed accidentally.
This has been happening for a long while with my MX4 Ubuntu edition,
and I am on the latest OTA update.
Let me know where should I look for log files to find what has been
going wrong here? Note that this happens in the lock screen, but
continues on even if I manage to unlock the screen while these
spurious touches continue to happen, so it might be even lower level
than unity8.
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