BCM5974 touchpad issues...

[Daniel J Blueman]

On 14 February 2013 06:07, Peter Hutterer <peter.hutterer at who-t.net> wrote:
> On Wed, Feb 13, 2013 at 10:47:50PM +0800, Daniel J Blueman wrote:
>> On 12 February 2013 20:00, Timo Aaltonen <tjaalton at ubuntu.com> wrote:
>> > On 12.02.2013 09:32, Daniel J Blueman wrote:
>> >> On 12 February 2013 12:47, Peter Hutterer <peter.hutterer at who-t.net>
>> >> wrote:
>> >>> On Mon, Feb 11, 2013 at 03:10:41PM +0800, Daniel J Blueman wrote:
>> >>>>
>> >>>> I'm seeing erratic click events on Broadcom 5974 touchpads (Macbook
>> >>>> Pro 10,1) during two-finger scrolling.

>> Peter: would you expect these 'BTN_TOOL_DOUBLETAP value 1' events when
>> two-finger scrolling [2]?
>
> BTN_TOOL_DOUBLETAP is the boolean for "two-fingers on the touchpad", so yes.

I'm still seeing this after moving to Ubuntu 13.04 prerelease. Since
the issue reproduces 1/20 times I scroll eg in gedit, it's hard to
switch terminal, launch evtest and be sure it'll be logged.

I checked the source of evtest to see if I could change opening the
eventfd to allow multiple clients sharing it, but it's clearly not how
things work.

Any ideas how I can log the scrollpad activity while using X?

One fallback is that I modify evtest with an option to visualise the
scrolling (as I see in gedit) to be able to detect undue clicks or
jumps. What do you think?

Thanks,
  Daniel
-- 
Daniel J Blueman