BCM5974 touchpad issues...

Daniel J Blueman daniel at quora.org
Wed Feb 13 06:47:50 PST 2013


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.
>>>>
>>>> I was wondering what mailing list is the most relevant, and where to
>>>> start to see if this is a userspace or kernel HID issue, anyone?
>>>>
>>>> Thanks,
>>>>    Daniel
>>>>
>>>> $ synclient
>>>> Parameter settings:
>>>>      LeftEdge                = -3898
>>>
>>> this doesn't look right. did you set this somehow, or is this the default
>>> it comes up with?
>>
>> This is the default, perhaps because the BCM5974 advertises a clickpad
>> property.
>>
>>>>      RightEdge               = 4428
>>>>      TopEdge                 = 434
>>>>      BottomEdge              = 6146
>>>>      FingerLow               = 70
>>>>      FingerHigh              = 75
>>>>      FingerPress             = 257
>>>>      MaxTapTime              = 180
>>>>      MaxTapMove              = 535
>>>>      MaxDoubleTapTime        = 180
>>>>      SingleTapTimeout        = 180
>>>>      ClickTime               = 100
>>>>      FastTaps                = 0
>>>>      EmulateMidButtonTime    = 0
>>>>      EmulateTwoFingerMinZ    = 283
>>>>      EmulateTwoFingerMinW    = 7
>>>>      VertScrollDelta         = -243
>>>>      HorizScrollDelta        = -243
>>>
>>> did you configure this as negative? if not, there's a bug there
>>> somewhere.
>>
>> Yes, to achieve the (IMHO) more natural scroll direction.
>>
>>> either way, hard to tell without any information as to what server
>>> version
>>> or synaptics driver version you're running.
>>
>> xserver-xorg-input-synaptics 1.6.2
>> xserver-xorg 7.7
>
> sounds like you're on debian/ubuntu, the latter doesn't say much, 'apt-cache
> policy xserver-xorg-core' would.

True; I should have remembered 7.7 is the X11 version and checked
xserver-xorg-core, which is 1.13.0. Is it generally useful to quote
the distro-specific exact version, ie 2:1.13.0-0ubuntu6.1 [1]?

Peter: would you expect these 'BTN_TOOL_DOUBLETAP value 1' events when
two-finger scrolling [2]?

Thanks,
  Daniel

--- [1]

$ apt-cache policy xserver-xorg-core
xserver-xorg-core:
  Installed: 2:1.13.0-0ubuntu6.1
  Candidate: 2:1.13.0-0ubuntu6.1
  Version table:
 *** 2:1.13.0-0ubuntu6.1 0
        500 http://sg.archive.ubuntu.com/ubuntu/ quantal-updates/main
amd64 Packages
        100 /var/lib/dpkg/status
     2:1.13.0-0ubuntu6 0
        500 http://sg.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages

--- [2]

http://quora.org/2012/evtest.txt
-- 
Daniel J Blueman


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