Bug 809558 - touchpad pointer movement nearly unusable
Summary: touchpad pointer movement nearly unusable
Keywords:
Status: CLOSED NEXTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: synaptics
Version: 17
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Orphan Owner
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-04-03 16:18 UTC by Marcus Moeller
Modified: 2012-04-04 08:36 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-04-04 08:35:26 UTC
Type: Bug


Attachments (Terms of Use)

Description Marcus Moeller 2012-04-03 16:18:32 UTC
Description of problem:
With the latest synaptics package, it is now very difficult to do small movements (e.g. for clicking a small icon or link), because the pointer keeps on moving while the finger rests on the touchpad.

This is shows in synclient:
$ synclient
...
    CoastingSpeed           = 0
    CoastingFriction        = 50
   PressureMotionMinZ      = format mismatch (32)
   PressureMotionMaxZ      = format mismatch (32)
    PressureMotionMinFactor = 0
    PressureMotionMaxFactor = 0
...

Notice the error with the PressureMotion settings.

Version-Release number of selected component (if applicable):
xorg-x11-drv-synaptics-1.5.99-7.20120207git141d9120b

Apparently a new type of properties was introduced, called cardinals.
These do not (yet) seem to be supported by synclient and xinput.

See this patch proposed in June:
http://lists.x.org/archives/xorg-devel/2011-June/023284.html
or in git:
http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/diff/?id2=6269fdaf3283ba4a8051858fc2b43fa102823e96
and
http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/commit/?id=a24c44375025576dd600ccf370ba365e5d94dc22

Which would explain the error I see in xinput:
Synaptics Pressure Motion (292):		... of unknown type CARDINAL
which may just be the meaning of "32" in synclient:
PressureMotionMinZ      = format mismatch (32)

I'm not an expert on X11, but XA_CARDINAL seems to be an integer, so
it should be fairly easy to add support. Or to revert back to
"integer" as a hotfix.

Comment 1 Marcus Moeller 2012-04-04 08:35:26 UTC
fixed in xorg-x11-drv-synaptics-1.5.99.901-2


Note You need to log in before you can comment on or make changes to this bug.