AlpsPS/2 ALPS GlidePoint gets stuck and is generally unresponsive.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Won't Fix
|
Low
|
Unassigned |
Bug Description
The problem is with Elantech touchpads in HP Pavillon DV2000 Entertainment PC. The more elaborate description of the bug by the bug reporter in comment #13 is as follows--
However, this is exactly what happens: ONLY AFTER leaving it still for a couple of seconds, there is a 200m or 400ms (milliseconds) delay between you moving your finger and the pointer coming to life. If after that pause you keep on moving the mouse, it goes *perfectly* well. If you stop for a little bit, and try to move it again, it will be stuck again -- your finger can move up to about a centimetre, or more, before the pointer finally moves.
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Basically, when there is a "cursor is not moving" problem, events don't show up even in evtest log as the Bug reporter finds out. So it is a kernel issue.
There is some information about this bug here:
http://
affects: | ubuntu → xserver-xorg-input-synaptics (Ubuntu) |
tags: | added: jaunty |
description: | updated |
Hi,
I just wanted to add that I downgraded to Ubuntu 8.10 (I can't deal with computer freezes... I don't have a test machine, sorry :( ).
Now... the problem is _there_ as well! But, it's much more subtle. I think it's subtle enough to make people slightly hate their touchpad and Ubuntu in general, but it's not clear enough (not in 8.10) to go "Ah, that's what's happening!".
In 8.10 as well, there is a small delay from when the touchpad has input to when the driver actually does something about it. I must say the problem is WAY less in 8.10 than 9.04, but I _guarantee_ it's there. If you know it's there, you suddenly realise why you hate the touchpad and you see clearly the delay. In 9.04, the problem is multiplied by 5x (give or take), and that's why people noticed.
I am happy to provide whatever info you might need.
Merc.