Tap is sometimes not registered on touchscreens
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Grail |
Fix Released
|
High
|
Henrik Rydberg | ||
utouch-grail (Ubuntu) |
Fix Released
|
High
|
Henrik Rydberg | ||
Maverick |
Fix Released
|
High
|
Didier Roche-Tolomelli |
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.
-----------------
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.
Related branches
- Chase Douglas (community): Approve
-
Diff: 17 lines (+3/-3)1 file modifiedsrc/grail-api.c (+3/-3)
Changed in utouch-grail: | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → Henrik Rydberg (rydberg) |
description: | updated |
Changed in utouch-grail: | |
status: | In Progress → Fix Released |
Changed in utouch-grail: | |
status: | Fix Released → New |
Changed in utouch-grail: | |
status: | New → Fix Committed |
Changed in utouch-grail: | |
status: | Fix Committed → Fix Released |
Changed in utouch-grail (Ubuntu): | |
status: | New → Triaged |
Changed in utouch-grail (Ubuntu Maverick): | |
status: | New → Triaged |
assignee: | nobody → Didier Roche (didrocks) |
importance: | Undecided → High |
Changed in utouch-grail (Ubuntu): | |
importance: | Undecided → High |
description: | updated |
tags: | added: testcase |
SRU: patch for maverick attached
False negatives are felt directly and affect the overall utouch experience. The fix is very simple, therefore I am nominating this for maverick inclusion.
The patch has been run locally for ten days, tested on both touchpads and touchscreens of varying frame rate. A package is available in the utouch unstable ppa (the version name there is 1.0.15+ repack2- 0ubuntu2, for historical reasons. It is, however, exactly the same package).
The patch affects the logic of single-finger pointer emulation, which is the subject of the test case. The regression potential is thus relatively low.