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USB Keyboard / Touchpad synaptics driver
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froosh
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Joined: 10 Jul 2014
Posts: 29

PostPosted: Fri Jan 23, 2015 7:05 pm    Post subject: USB Keyboard / Touchpad synaptics driver Reply with quote

So I have a Keyboard / Touchpad device connected through a USB receiver which I cannot configure at all. Everything works which ironically is the problem. The tap-to-click is far too sensitive and I cannot configure any part of it. If I call synclient, I get the following message:
Code:
synclient -l
Couldn't find synaptics properties. No synaptics driver loaded?

Other useful things I can think are:
Code:
cat /etc/portage/make.conf | grep INPUT_DEVICES
INPUT_DEVICES="synaptics evdev"

Code:
cat /usr/src/linux-3.17.7-gentoo/.config | grep SYNAPTICS
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_SYNAPTICS_I2C=m
CONFIG_MOUSE_SYNAPTICS_USB=y


So it looks to me at least that I built these options in the kernel, so it's confusing that I'm being told that my system cannot find the synaptics driver. Any suggestions?
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froosh
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Joined: 10 Jul 2014
Posts: 29

PostPosted: Sun Jan 25, 2015 8:24 pm    Post subject: Reply with quote

When I run xinput, nothing is showing up as a Touchpad. I think some issue is causing this to be read in as a pointer instead of a touchpad, and the synaptics driver isn't loading as a result.

Code:
⎡ Virtual core pointer                       id=2   [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                 id=4   [slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                      id=9   [slave  pointer  (2)]
⎣ Virtual core keyboard                      id=3   [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                id=5   [slave  keyboard (3)]
    ↳ Power Button                               id=6   [slave  keyboard (3)]
    ↳ Sleep Button                               id=7   [slave  keyboard (3)]
    ↳ Logitech USB Receiver                      id=8   [slave  keyboard (3)]


Does anyone have any suggestions this time? What good are forums if no one answers questions?
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chithanh
Developer
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Joined: 05 Aug 2006
Posts: 2152
Location: Berlin, Germany

PostPosted: Sun Jan 25, 2015 11:54 pm    Post subject: Reply with quote

Sometimes people don't know the answer, especially if it concerns obscure or somewhat exotic hardware (such as external USB trackpads). The question will then stay visible longer via the "view unanswered posts" link at the top right.

Check in "dmesg" and "lsusb -t" whether it is actually the synaptics-usb driver which is driving the trackpad. If it is driven by usbhid rather than synaptics-usb, this may be because the USB IDs are missing from the driver, or usbhid initializes first and grabs the device.
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Fitzcarraldo
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Joined: 30 Aug 2008
Posts: 1655
Location: United Kingdom

PostPosted: Mon Jan 26, 2015 3:31 am    Post subject: Reply with quote

froosh, Coincidentally I have just posted in my blog about configuring X Windows properly for my laptop's touchpad and keyboard (and GPU). I don't know if it will help you, but you can read it via the following link: Fixing unperceived errors in my X Windows configuration

I was motivated to blog about it after having to make some adjustments following recent changes to the package eselect-opengl, which made me look again at my Xorg.0.log file and try to eliminate some error messages, most of which related to the synaptics driver and to the detection of the touchpad.
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