Comment 31 for bug 381884

I think most people (at least myself) have moved beyond a mactel with
linux, which may explain inactivity. I still think it's an outstanding
issue, but I have no way of testing it.

Blaine

On Thu, Jan 9, 2014 at 6:01 PM, Christopher M. Penalver <
<email address hidden>> wrote:

> Richard Cavell, this bug was reported a while ago and there hasn't been
> any activity in it recently. We were wondering if this is still an
> issue? If so, could you please test for this with the latest development
> release of Ubuntu? ISO images are available from
> http://cdimage.ubuntu.com/daily-live/current/ .
>
> If it remains an issue, could you please run the following command in
> the development release from a Terminal
> (Applications->Accessories->Terminal), as it will automatically gather
> and attach updated debug information to this report:
>
> apport-collect -p xserver-xorg-input-synaptics REPLACE-WITH-BUG-NUMBER
>
> Please note, given that the information from the prior release is
> already available, doing this on a release prior to the development one
> would not be helpful.
>
> Thank you for your understanding.
>
> Helpful bug reporting tips:
> https://wiki.ubuntu.com/ReportingBugs
>
> ** Project changed: linux => xserver-xorg-input-synaptics (Ubuntu)
>
> ** Changed in: xserver-xorg-input-synaptics (Ubuntu)
> Status: New => Incomplete
>
> ** Changed in: xserver-xorg-input-synaptics (Ubuntu)
> Importance: Undecided => Low
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/381884
>
> Title:
> Appletouch touchpad driver produces jumpy two-fingered scrolling
>
> Status in Mactel Support:
> New
> Status in “xserver-xorg-input-synaptics” package in Ubuntu:
> Incomplete
>
> Bug description:
> Binary package hint: xserver-xorg-input-synaptics
>
> My system is: Linux richard-laptop 2.6.28-11-generic #42-Ubuntu SMP
> Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux. However, this issue
> applies to at least Intrepid and Jaunty, 32 and 64 bit, running on
> Apple Mac hardware that uses an Appletouch touchpad. It has also been
> reported in the Gentoo and Debian forums.
>
> From what I can find on the Net, the Appletouch touchpad was first
> used in February 2005 for the G4 aluminium PowerBook, and last used
> for the Macbook Pro in its 3rd generation, then 4th generation Intel
> Macbook in early 2008.
>
> The issue is with two-fingered scrolling. The Appletouch features the
> ability to detect two (or three) touches. OS X uses this feature to
> enable scrolling, similar to a scrollwheel on a mouse.
>
> The synaptics driver causes the simulated scrollwheel to start moving
> as soon as one places a second finger on the touchpad. That is to
> say, placing a second finger causes the trackpad driver to deliver
> scrolling signals, which means that attempts at vertical scrolling
> feels jumpy, or over sensitive.
>
> There was an update to the OS X driver that fixed this situation for
> Apple. I guess that it detects the second finger and programmatically
> ignores the first few scrollticks, thereby 'deadening' the output.
> This is what we need.
>
> The synaptics driver allows for some modification, but not for
> multitouch input. This needs to be fixed at source code level.
>
> Richard
>
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>