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[Solved]Changing ALPS/Synaptics touchpad Sensitivity
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ShanaXXII
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PostPosted: Wed Sep 10, 2014 10:15 pm    Post subject: [Solved]Changing ALPS/Synaptics touchpad Sensitivity Reply with quote

So I have this ALPS touchpad and I don't know how to change the sensitivity of it.
It's been bothering me a little because I am not used to dragging from on edge
of the touchpad to the other and only moving 3/4 of the screen.
I have a config file in my /etc/X11/xorg.conf.d/50-synaptics.conf but I dont know what to add to change the sensitivity.

It would be nice to know how to double-tap and hold to drag and make the 1 tap registry faster.
right now when I tap once, it takes about 20 milisecs for it to register as a left-mouse click.


Last edited by ShanaXXII on Sat Sep 20, 2014 11:47 am; edited 1 time in total
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fernan82
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PostPosted: Sat Sep 13, 2014 12:52 am    Post subject: Reply with quote

There's two utilities that I know of that you can use kde-misc/kcm_touchpad and kde-misc/synaptiks. The latter one works best for me. I was never able to get it right with 50-synaptics.conf.
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charles17
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PostPosted: Sat Sep 13, 2014 6:33 am    Post subject: Re: Changing ALPS/Synaptics touchpad Sensitivity Reply with quote

ShanaXXII wrote:
It would be nice to know how to double-tap and hold to drag and make the 1 tap registry faster.
right now when I tap once, it takes about 20 milisecs for it to register as a left-mouse click.
That's what I have in the cofig file for synaptics touchpad and it works well:
Code:
# /etc/X11/xorg.conf.d/synaptics.conf

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"


   Option "VertEdgeScroll" "on"
   Option "TapButton1" "1"
EndSection
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ShanaXXII
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PostPosted: Sat Sep 13, 2014 8:03 pm    Post subject: Re: Changing ALPS/Synaptics touchpad Sensitivity Reply with quote

charles17 wrote:
Code:
# /etc/X11/xorg.conf.d/synaptics.conf

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"


   Option "VertEdgeScroll" "on"
   Option "TapButton1" "1"
EndSection


Mine is /etc/X11/xorg.conf.d/50-synaptics.conf
is there a differencee?
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charles17
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PostPosted: Sat Sep 13, 2014 8:15 pm    Post subject: Re: Changing ALPS/Synaptics touchpad Sensitivity Reply with quote

ShanaXXII wrote:
charles17 wrote:
Code:
# /etc/X11/xorg.conf.d/synaptics.conf

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"


   Option "VertEdgeScroll" "on"
   Option "TapButton1" "1"
EndSection


Mine is /etc/X11/xorg.conf.d/50-synaptics.conf
is there a differencee?

Could not find any information about the relevance of numbering or naming in general. Even this naming works and there are no complaints in /var/log/Xorg.0.log
Quote:
/etc/X11/xorg.conf.d/device_no_vesa.conf
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dweezil-n0xad
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PostPosted: Sun Sep 14, 2014 11:00 am    Post subject: Reply with quote

here are some pointers:
Code:
$ man synaptics

http://wiki.gentoo.org/wiki/Synaptics#Configuration
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ShanaXXII
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PostPosted: Thu Sep 18, 2014 11:07 pm    Post subject: Reply with quote

dweezil-n0xad wrote:
here are some pointers:
Code:
$ man synaptics

http://wiki.gentoo.org/wiki/Synaptics#Configuration

Got some useful stuff from that (SingleTapTimeout),
but still cant seem to configure the sensitivity.
https://wiki.archlinux.org/index.php/Touchpad_Synaptics
It shows how to use xinput to get the capabilities of ur touchpad.
Here's mine:
Code:
$ xinput list-props "AlpsPS/2 ALPS GlidePoint" | grep Capabilities
   Synaptics Capabilities (308):   1, 1, 1, 0, 0, 1, 0

From the example:
1 means yes; 0 means no
(1) device has a physical left button
(0) device does not have a physical middle button
(1) device has a physical right button
(0) device does not support two-finger detection
(0) device does not support three-finger detection
(1) device can configure vertical resolution
(1) device can configure horizontal resolution

What stumped me was that according to this guide, it says that I can configure my vertical resolution (I'm guessing this is the sensitivity) but I can't configure my horizontal resolution :/
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dweezil-n0xad
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PostPosted: Fri Sep 19, 2014 10:37 pm    Post subject: Reply with quote

I use xinput to reduce the touchpad sensitivity when I extend the desktop on my second monitor. https://bbs.archlinux.org/viewtopic.php?pid=963650#p963650
changing the Constant Deceleration works best for me.
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ShanaXXII
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PostPosted: Sat Sep 20, 2014 11:46 am    Post subject: Reply with quote

dweezil-n0xad wrote:
I use xinput to reduce the touchpad sensitivity when I extend the desktop on my second monitor. https://bbs.archlinux.org/viewtopic.php?pid=963650#p963650
changing the Constant Deceleration works best for me.

Thank you very much
Code:
$ xinput set-prop 12 "Device Accel Constant Deceleration" 2
Now its working great :D
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