Mouse movement quality in Ubuntu

[Francesco Fumanti]

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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