[ubuntu-studio-users] Spurious effects

Ian Fantom ian at fantom.org.uk
Wed May 18 12:48:40 UTC 2016


Many thanks. I'll work through that - bit by bit (It's years since I did 
techie work).

Regards,
Ian

On 18/05/2016 13:41, Ralf Mardorf wrote:
> Run
>
>    sudo apt-get update && sudo apt-get dist-upgrade && sudo apt-get install x11-utils xinput
>
> to install the needed command.
>
> If you then run
>
>    xev
>
> you get information about hardware that might move the mouse pointer.
>
> Perhaps the hardware is broken. I guess that assumed the software should be
> fishy, it won't display something, when the mouse pointer moves, but this
> not necessarily is ensured, so better disable the mouse pad and connect an
> external mouse for testing purpose.
>
> Run
>
>    xinput --list
>
> and then
>
>    xinput disable NUMBER_OF_THE_TOUCHPAD
>
> An example, since I don't have a touchpad, I show how to disablen and
> enable my optical mouse.
>
>    xinput --list
>    ⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
>    ⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
>    ⎜   ↳ USB Optical Mouse                       	id=8	[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)]
>        ↳ Power Button                            	id=7	[slave  keyboard (3)]
>        ↳ AT Translated Set 2 keyboard            	id=9	[slave  keyboard (3)]
>
> To disable the mouse I need to run
>
>    xinput disable 8
>
> and to enable it
>
>    xinput enable 8
>
> Regards,
> Ralf
>




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