Bug#349722: installation-reports: touchpad extremely slow
Leena Romppainen wrote:
Machine: Sony Vaio SGN-S5HP
Processor: Intel Pentium M 740 1.73 GHz
Memory: 512 MB
[...]
Touchpad is extremely slow even when settings have been put to the
fastest possible (touchpad is fine in Windows XP and Ubuntu (breezy
5.10), but makes the Debian fairly irritating to use.
I think you talk about mouse pointer under X.
In that case, looks like the problem that affects also my Sony Vaio
VGN-B3VP and several other laptop based on ALPS touchpad. Please, look
(and post) the dmesg output to see if you also have an ALPS mouse. If
yes, continue to read.
The first thing you have to do is to install the
"xfree86-driver-synaptics", that enable you to configure some advanced
functionality of your mouse, like tapping, pointer speed, etc.
Doing that can solve your problem or not, depending on the type of ALPS
mouse you have. For me that was not sufficent: i had also to use a
2.6.12 kernel (or later) and to tweak the "/etc/X11/xorg.conf" by adding
the following line under the touchpad "InputDevice" section:
Option "MinSpeed" "0.5"
Option "MaxSpeed" "1.0"
These values were chosen by me empirically: you can choose the values
you like. And remember to read the instruction at the top of xorg.conf
regarding the MD5 update.
After you have modified xorg.conf, you have to restart X.
Since you say that your touchpad works under Ubuntu Breezy, i suppose
you are part of those "fortunate" guy (that seems to be the majority)
for which their "xorg-driver-synaptics" version 0.13.6 works. It is
installed by default and corresponds to debian's
xfree86-driver-synaptics. For my touchpad it is necessary to have at
least version 0.14.3 to access to its extended functionality and when
they reverted to 0.13.6 few weeks before the Breezy launch, that broke
my mouse.
So for me was the opposite of your situation: my mouse works well under
debian but not under Ubuntu.
However i suggest you to give a look at the Synaptics touchpad
maintainer page:
http://web.telia.com/~u89404340/touchpad/
I also suggest you to look at:
http://bugzilla.ubuntu.com/show_bug.cgi?id=15182
And to search to this problem on the web: it's not a debian specific bug.
Regards.
Cesare.
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