Ubuntu
ubuntu-ui-toolkit package

Please turn off vibrate on touch/typing by default. It makes the phone feel much more laggy

Bug #1571513 reported by Daniel van Vugt
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Canonical System Image
New
Undecided
Unassigned
Ubuntu UX
New
Undecided
Unassigned
ubuntu-system-settings (Ubuntu)
Confirmed
Undecided
Unassigned
ubuntu-ui-toolkit (Ubuntu)
Incomplete
Undecided
Unassigned

Bug Description

Please turn off vibrate on touch/typing by default. It makes the phone feel much more laggy than it really is, which is bad for making a first impression on users.

The reason I think is because the vibration mechanism runs for hundreds of milliseconds. Whereas visual and aural feedback is in the order of tens of milliseconds. So vibration feedback makes the phone feel much more laggy. Please turn it off by default.

See original description
Tags: performance
Daniel van Vugt (vanvugt)
description: updated
tags: added: performance
description: updated
Revision history for this message
Pat McGowan (pat-mcgowan) wrote :

Will wait to hear from design, to me it seems quite responsive

Changed in canonical-devices-system-image:
status: New → Opinion
Cris Dywan (kalikiana)
Changed in ubuntu-ui-toolkit (Ubuntu):
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-system-settings (Ubuntu):
status: New → Confirmed
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Feedback from typing a key should be quick. Be it visual or a sound, the "click" feedback should be much shorter than the time between keystrokes. The problem with the vibrate feedback is that it lasts too long, which then feeds back to the user by touch and you get a sense of the feedback being late.

It might be possible to solve this with shorter vibration, but removing would definitely solve the problem.

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Setting status back to New so the bug doesn't get hidden in searches by default. I think this is an important performance issue that makes Ubuntu Touch feel laggy.

Changed in canonical-devices-system-image:
status: Opinion → New
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

I just noticed also with sounds off, you can hear the impact of your finger tapping the screen before the vibration occurs. So our haptic feedback is slower than the speed of sound. :)

This fix should help a bit: https://code.launchpad.net/~vanvugt/unity8/fix-1497105/+merge/314212
But I would still recommend turning off touch vibrations.

Revision history for this message
Andrea Bernabei (faenil) wrote :

Related: the calls to the vibration engine are sync dbus calls. Whenever the system is overloaded, that will result in long UI stalls. In other cases, shorter UI freezes can still be experienced.

See https://bugs.launchpad.net/ubuntu/+source/platform-api/+bug/1620553

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