Problems with synaptic touch pad.

Bob Ogg rwogg18 at gmail.com
Thu Aug 19 21:31:23 BST 2010


Hi Kenneth
I am running Linux Mint (based on Ubuntu) on 2 different laptops, one of
which is a Lenovo G555. My HP is dual booted with both Mint & Window7. My
house-mate has the exact same Lenovo and only runs Window7 that came on it.
Ever since she started using it she had major problems big time with scroll
problems as you described and also the mouse pointer jumping all over. We
each also have a Logitech M505 laser mouse. I also have a bluetooth mouse
and a wired USB mouse which I could use for a control in determining the
problem.
I never notice the problem on my HP because I always turned off the
touchpad. I discovered the problem when we got our Lenovo's because I didn't
know you could turn off the touchpad. (Dah read the manual stupid.)
After doing an exhaustive search of different forums and websites looking
for answers, one person suggested that it might be a conflict between a
mouse and the touch pad.
I tested his theory with both my laptops using all 3 mice I have. The
problem did not appear to occur with the wired mouse but only the wireless
mice. On top of that the problem also occurred using both wireless mice on
both laptops and in both Linux and Windows7. The problem stopped for both me
and my house-mate when we turned off either the touch-pad or turned off the
wireless mouse. We couldn't run both at the same time.
Conclusion:
There must be a conflict between either the software drivers or the hardware
itself of the touch-pad and wireless mice. I lean toward it being a hardware
conflict since it occurred exactly the same in both Linux and Windows7
unless they shared the same driver code on both platforms.

Bob Ogg


On Thu, Aug 19, 2010 at 12:21 PM, Kenneth Adam Miller <
kennethadammiller at gmail.com> wrote:

> I've been unable to use scroll for a long time on Ubuntu. I would really
> like to add this feature, but it is proving to be a much more complicated
> process that what I thought it should be.
> I've followed instructions at
> https://bugs.launchpad.net/ubuntu/+source/gsynaptics/+bug/132627 and
> https://help.ubuntu.com/community/SynapticsTouchpad#shmconfig
>
> I added the ability to use the vertical scroll on my touchpad, but still,
> having trouble. When I scroll down it works, but scrolling up gives trouble
> (it jumps to the very very bottom of the page). I tried to add the program
> TouchPad from USC, but it fails to initilize with an error report like this:
>
>
> GSynaptics couldn't initialize.
> You have to set 'SHMConfig' 'true' in xorg.conf or XF86Config to use
> GSynaptics
>
> I went through trying to fix that, but I couldn't get it done.  I really
> don't know where to go.
> I do think I found something significant though: the command "xinput list"
> gives this:
>
>
> ⎡ Virtual core pointer                        id=2    [master pointer  (3)]
> ⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer
> (2)]
> ⎜   ↳ MLK Wireless Keyboard& Laser Mouse          id=10    [slave  pointer
> (2)]
> ⎜   ↳ ImPS/2 Generic Wheel Mouse                  id=13    [slave  pointer
> (2)]
> ⎜   ↳ Macintosh mouse button emulation            id=14    [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)]
>     ↳ Video Bus                                   id=7    [slave  keyboard
> (3)]
>     ↳ Sleep Button                                id=8    [slave  keyboard
> (3)]
>     ↳ MLK Wireless Keyboard& Laser Mouse          id=9    [slave  keyboard
> (3)]
>     ↳ CNF7017                                     id=11    [slave  keyboard
> (3)]
>     ↳ AT Translated Set 2 keyboard                id=12    [slave  keyboard
> (3)]
>
> If you look, you can see that it is NOT detecting a synaptics touchpad.
>
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