** Changed in: canonical-devices-system-image
       Status: Fix Committed => Fix Released

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to platform-api in Ubuntu.

  OSK becomes unusable as taps are delayed by 1-2 seconds and vibration
  doesn't occur any more (although gestures continue to work)

Status in Canonical System Image:
  Fix Released
Status in platform-api package in Ubuntu:
  In Progress
Status in usensord package in Ubuntu:
  Fix Committed

Bug description:
  Krillin, rc-proposed/bq_aquaris.en r422

  1. Create to alarms that'll trigger at the same time
  2. Wait until they go off
  3. Dismiss the alarms
  4. Verify that there is still haptic feedback and OSK is still responsive

  Step 4 fails.

  UPDATE: see comment #5, it turns out it's the haptics plugin doing SYNC dbus 
calls and blocking the UI thread when the dbus service does not reply or the 
replies come with a big delay

  All at once taps have become incredibly delayed, by 1 or 2 secs.
  Gestures still work ok, no delay there.
  Swiping the greeter -> no delay. Tapping numbers to input code on the greeter 
--> 2 secs delay. Even though both are parts of unity8. So it doesn't seem to 
only be a problem of unity8 clients, but also unity8 itself.
  I have no idea why horizontal/vertical swipes would be unaffected, though.

  The virtual keyboard is also completely unusable because of the huge
  delay that each tap has.

  Also noticed that the vibration is gone, taps don't trigger vibration

  Webview also seemed to be unaffected by the delays (although I'm not
  entirely sure, the bug is now gone)

  I also restarted unity8 and unity8-dash with Mir input logging enabled. That 
showed that the touch events were being delivered as expected, no delay.
  restart unity8 MIR_CLIENT_INPUT_RECEIVER_REPORT=log and
  restart unity8-dash MIR_CLIENT_INPUT_RECEIVER_REPORT=log

  Restarting lightdm (that forces the restart of unity-system-
  compositor) fixed the issue.

  Additional info: I had Mir touchspots visualization enabled, which are
  known to cause more stuttering, but I think they're unlikely to be the
  cause of this bug, I had them enabled for 2 weeks and haven't noticed
  any problem like this before.

  This is the log from a tap on an icon in the shell:
  [2016-09-06 10:52:51.876400] <DEBUG> input-receiver: Received 
event:touch_event(when=54593678129000 (6.030520ms ago), from=3, touch = {{id=0, 
action=down, tool=finger, x=426.211, y=292.695, pressure=0.85098, major=19.963, 
minor=0, size=19.963}, modifiers=1)
  [2016-09-06 10:52:51.953821] <DEBUG> input-receiver: Received 
event:touch_event(when=54593751953000 (9.709366ms ago), from=3, touch = {{id=0, 
action=change, tool=finger, x=426.211, y=292.695, pressure=0.843137, 
major=19.963, minor=0, size=19.963}, modifiers=1)
  [2016-09-06 10:52:51.954343] <DEBUG> input-receiver: Received 
event:touch_event(when=54593761256000 (0.958751ms ago), from=3, touch = {{id=0, 
action=up, tool=finger, x=426.211, y=292.695, pressure=0.843137, major=19.963, 
minor=0, size=19.963}, modifiers=1)


To manage notifications about this bug go to:

Mailing list: https://launchpad.net/~touch-packages
Post to     : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to