[Bug 667802] Re: Tap is sometimes not registered on touchscreens

[Oliver Grawert]

i was about to sponsor the upload, but the branches are a bit messed up now.
https://code.launchpad.net/~utouch-team/utouch-grail/packaging contains a tag and changelog entry for maverick-porposed and there seems to be no plain natty branch atm to pull from for a sponsored upload.
please provide a branch for natty specifically or revert/change the tag and changelog entry in the natty packaging branch.

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Tap is sometimes not registered on touchscreens
https://bugs.launchpad.net/bugs/667802
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Status in uTouch-grail: Fix Released
Status in “utouch-grail” package in Ubuntu: Triaged
Status in “utouch-grail” source package in Maverick: Fix Committed

Bug description:
pushed in -proposed:


 utouch-grail (1.0.16-0ubuntu1) maverick-proposed; urgency=low
 .
   * Report touch down on one-finger entry (LP: #667802)
   * New upstream release.


TEST CASE: Visible on touchscreens. Move a single finger around the screen, and tap lightly with a few seconds interval. The pointer will follow sometimes, and sometimes it will not. With the patch, the pointer will follow every time.

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Vincent Gerris wrote on 2010-10-04 (from #637106):

What happens is, that if I touch the screen, the cursor does not move from the previous position sometimes.
For example when I touch 6 different places on the screen, the cursor would follow 3 times and the other 3 not (it would remain at the 3rd position).

Things that effect this: when I press harder on the screen, sometimes the cursor does appear on that spot.
When I touch and then drag, the cursor always follows.

This is a confirmed problem, and a patch for it is on its way.