two-finger scrolling does not work on Dell Studio 15 (1555) via gui config
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-input-synaptics (Ubuntu) |
Incomplete
|
Low
|
Unassigned |
Bug Description
Binary package hint: xserver-
In 9.10 going to system - preferences - mouse - touchpad (tab) and selecting:-
Two-finger scrolling
does not enable this feature. But edge scrolling is then disabled.
But if I then enter:-
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 32 40
it works fine (thanks to Bug #422224 for pointing me in the right direction)
This I have automated via /usr/share/
by adding along side the other machine exeptions listed:-
<match key="/org/
<merge key="input.
</match>
which I think is doing the same thing by reference to:-
http://
which states:-
Option "EmulateTwoFing
For touchpads not capable of detecting multiple fingers (Alps),
this sets the Z pressure threshold to emulate a two finger
But this as I understand it is enabling emulation of multi touch capability by way of a work around and also using deprecated hal!
However this would only be necessary if this synaptics pad did not support multi touch but given that this same machine is able to do pinch zoom in vista I would have though that it could do multi touch.
guided by:-
https:/
and first enabling SHM in synaptics driver by adding the following line in the above machine exception
<merge key="input.
From watching the f column produced by
synclient -m 100
only "1" finger is reported, this seems inconsistent with pinch zoom capability.
dmesg | grep Touchpad
gives:-
[ 6.018770] Synaptics Touchpad, model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04731/0xa40000
From Bug #422224 "two-finger scrolling does not work on Acer AO531h" it would seem there are others who suspect
they have multi touch but are having to use emulation (post #10 and #15). Based on the reporter of 422224's dmesg they have the same touch pad as me.
Please let me know how I can help to clarify / properly fix this. My meager efforts on the matter have only got thus far.
I have opened a fresh bug as 422224 specified a different machine and I though that this title might help others searching with this problem. I will comment on 422224 to this end as they are probably duplicates but I am not sure yet.
Thanks to anyone for their attention and hope this helps to provide a work around for someone until more progress can be made.
ProblemType: Bug
Architecture: i386
Date: Fri Nov 6 18:43:32 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Dell Inc. Studio 1555
Package: xserver-
ProcCmdLine: BOOT_IMAGE=
ProcEnviron:
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcVersionSign
RelatedPackageV
xserver-xorg 1:7.4+3ubuntu7
libgl1-mesa-glx 7.6.0-1ubuntu4
libdrm2 2.4.14-1ubuntu1
xserver-
xserver-
SourcePackage: xserver-
Uname: Linux 2.6.31-14-generic i686
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/
XsessionErrors:
(gnome-
(polkit-
(nautilus:1782): Eel-CRITICAL **: eel_preferences
(gnome-
dmi.bios.date: 07/03/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0D176M
dmi.board.vendor: Dell Inc.
dmi.board.version: A07
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Studio 1555
dmi.product.
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
system:
distro: Ubuntu
architecture: i686kernel: 2.6.31-14-generic
Your 'meager efforts' have fixed it for me, thanks man!
As a side note, the command has to be entered after restarting. You can add an entry to Preferences > Startup Programs to run the command on startup.