BCM5974 touchpad issues...

[Peter Hutterer]

On Sun, Mar 10, 2013 at 06:17:58PM +0800, Daniel J Blueman wrote:
> On 6 March 2013 07:48, Peter Hutterer <peter.hutterer at who-t.net> wrote:
> > On Tue, Mar 05, 2013 at 03:30:57PM +0800, Daniel J Blueman wrote:
> >> I'm seeing [erratic click events and jumpy scrolling on Broadcom 5974
> >> touchpads (Macbook Pro 10,1) during two-finger scrolling] on Ubuntu
> >> 13.04 prerelease. Since the issue reproduces [1/10] 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?
> [...]
> 
> Superb, thanks Peter.
> 
> I've captured a session exhibiting the behaviour; for comparison a
> normal two-finger scroll is between:
> 
> Event: time 1362909816.949923, type 1 (EV_KEY), code 333
> (BTN_TOOL_DOUBLETAP), value 1
> and:
> Event: time 1362909817.959870, type 1 (EV_KEY), code 333
> (BTN_TOOL_DOUBLETAP), value 0
> 
> Around here, I see a false click:
> Event: time 1362909818.577892, type 1 (EV_KEY), code 333
> (BTN_TOOL_DOUBLETAP), value 1
> and scrolling here jumps forward ~5 lines every 5 lines (this is
> surely not a feature?)
> Event: time 1362909820.148825, type 1 (EV_KEY), code 333
> (BTN_TOOL_DOUBLETAP), value 0
> 
> I've uploaded the log to http://quora.org/evtest-bcm5974.log if you're
> able to find anything interesting. Let me know if I can get any
> other/better debug.
 
please don't upload files to random locations. attach them to the mail or
file a bug, too often files disappear, leaving those looking at this in the
archives without context.

Having said that, I can't find anything immediately obvious in that log.
Please record your device with evemu and attach the files to a bug, assigned
to me.

http://wiki.freedesktop.org/wiki/Evemu

Cheers,
   Peter