Mouse movement quality in Ubuntu
Francesco Fumanti
francesco.fumanti at gmx.net
Thu Sep 27 13:40:15 UTC 2007
Hello Martin,
Thanks for your howto. It now also works on my system.
(Previously, I only changed the Driver line without commenting out
the other Option lines; that probably was the problem.)
Have a nice day.
Francesco
At 9:59 PM -0700 9/26/07, Martin Olsson wrote:
>First make sure you have this package installed:
>xserver-xorg-input-evdev
>
>My original mouse configuration (which was really bad with all those
>latency problems) looked like this:
>
>Section "InputDevice"
> Identifier "Configured Mouse"
> Driver "mouse"
> Option "CorePointer"
> Option "Device" "/dev/input/mice"
> Option "Protocol" "ImPS/2"
> Option "ZAxisMapping" "4 5"
> Option "Emulate3Buttons" "true"
>EndSection
>
>The mouse configuration that I now use instead (the evdev one, which
>doesn't have any sweep-select latency problems at all) looks like
>this:
>
>Section "InputDevice"
> Identifier "Configured Mouse"
> Driver "evdev"
> Option "Device" "/dev/input/mice"
>EndSection
>
><snip>
>
>PS. I have posted bug 144277 in launchpad suggesting that evdev
>becomes the default mouse driver in Ubuntu:
>https://bugs.launchpad.net/ubuntu/+bug/144277
>
>
>
>Martin
>
>
>Francesco Fumanti wrote:
>>Hello,
>>
>>Thanks for this interesting piece of information.
>>
>>Could you please paste the relevant section of the xorg.conf in a
>>reply to this email, to show what has to be changed? In fact, I
>>tried to do the change, but the X server did not startup correctly
>>anymore. (I am back to the previous settings)
>>
>>Maybe I changed the wrong line in the xorg.conf file?
>>
>>Cheers
>>
>>Francesco
>>
>>
>>
>>At 8:24 PM -0700 9/26/07, Martin Olsson wrote:
>>>Hi,
>>>
>>>I always thought the mouse behaved a little weird in "Linux". When I
>>>would drag-and-sweep select something with the mouse very quickly I
>>>would often end up with a selection that was smaller than I intended.
>>>Clearly there was some kind latency problem because X.org didn't get the
>>>mouse down event until I had already moved the mouse cursor quit a bit.
>>>I assume(d) that this was one of many unpolished things that would
>>>eventually be corrected.
>>>
>>>Earlier this week a more experienced Linux user showed me a way to fix
>>>this problem. Apparently, if I edit my xorg.conf file and switch the
>>>mouse input driver to "evdev" the mouse becomes extremely snappy and
>>>high precision. When I select stuff, exactly what I intended is
>>>selected. I love it!
>>>
>>>This little revelation made me realize that there is probably many
>>>people out there who are using Ubuntu with this kind of, not that
>>>severe, but still annoying mouse latency problems. Fixing this might be
>>>as simple as switching to "evdev" by default in Ubuntu (even though I
>>>admit that I have no idea about the actual difference in scope/purpose
>>>of the standard input driver versus the evdev driver).
>>>
>>>
>>>
>>>
>>>Martin
>>>
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