Bug 51403 - Sentelic two finger scrolling/tapping incompatible
Sentelic two finger scrolling/tapping incompatible
Status: NEEDINFO
Product: xorg
Classification: Unclassified
Component: Input/synaptics
unspecified
x86-64 (AMD64) Linux (All)
: medium normal
Assigned To: Peter Hutterer
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2012-06-25 03:02 UTC by Jamie Kitson
Modified: 2012-06-28 02:09 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
Description (813 bytes, application/octet-stream)
2012-06-27 13:13 UTC, Jamie Kitson
no flags Details
Two finger scrolling (9.60 KB, application/octet-stream)
2012-06-27 13:15 UTC, Jamie Kitson
no flags Details
Two finger tap (3.68 KB, application/octet-stream)
2012-06-27 13:15 UTC, Jamie Kitson
no flags Details

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Description Jamie Kitson 2012-06-25 03:02:27 UTC
With my Sentelic touchpad two finger scrolling and two finger tapping interfere with each other. ie, if you disable one, the other works as expected. I tried to report this against the kernel driver but they said that the kernel doesn't deal with scrolling/tapping.

https://bugzilla.kernel.org/show_bug.cgi?id=43591
Comment 1 Peter Hutterer 2012-06-25 18:57:47 UTC
Please grab mtview from https://github.com/whot/mtview and check if the data that comes from the touchpad looks sane (no weird jumps, etc.)

If so, please record the device data with utouch-evemu and attach both the description and event file here. Try to get as short a recording as possible to reproduce.
Comment 2 Jamie Kitson 2012-06-26 14:53:48 UTC
mtview looks fine, but for some reason I am now unable to enable double finger tapping, meaning that I cannot recreate the bug.
Comment 3 Jamie Kitson 2012-06-27 13:13:22 UTC
Created attachment 63530 [details]
Description

Output of 

evemu-describe /dev/input/event7
Comment 4 Jamie Kitson 2012-06-27 13:15:09 UTC
Created attachment 63531 [details]
Two finger scrolling

Output of

evemu-record /dev/input/event7

while two finger scrolling

Issue is that scroll doesn't happen until I lift my fingers off the touchpad.
Comment 5 Jamie Kitson 2012-06-27 13:15:47 UTC
Created attachment 63532 [details]
Two finger tap

Two finger tapping doesn't work either.
Comment 6 Jamie Kitson 2012-06-27 13:16:32 UTC
After a cold start today the touchpad was playing up again.
Comment 7 Jamie Kitson 2012-06-27 13:37:41 UTC
I think I've narrowed it down to horizontal and vertical two finger scrolling that are interfering with each other. If I enable both then it's erratic, if I only enable vertical it's ok.

Two finger taping still doesn't work though.
Comment 8 Jamie Kitson 2012-06-28 02:09:10 UTC
This is possibly an issue with the driver: https://bugzilla.kernel.org/show_bug.cgi?id=43591#c5