Package: base<br>Severity: important<br><br>I am using Dell Latitude D520 n series laptop. My laptop uses a Alps-Glidepoint touchpad. When i installed <br>debian etchv4.0, i was not able to use the tapping feature in my laptop. However, i was able to use touchpad to <br>
move my mouse pointer. The mouse pointer moved at snail pace with touchpad as well as external USB mouse device.<br>Then i opened /etc/X11/xorg.conf file, and i found this:<br>Section "InputDevice"<br> Identifier "Synaptics Touchpad"<br>
Driver "synaptics"<br> Option "SendCoreEvents" "true"<br> Option "Device" "/dev/psaux"<br> Option "Protocol" "auto-dev"<br>
Option "HorizScrollDelta" "0"<br>EndSection<br>In order to increase the speed of my mouse pointer, i had to add few more lines to above settings. It worked for <br>me. To enable tapping feature i had to go through two more steps:<br>
Step 1: In order to find out hardware information about my touchpad<br>cat /proc/bus/input/devices<br>I: Bus=0011 Vendor=0002 Product=0008 Version=7321<br>N: Name="AlpsPS/2 ALPS GlidePoint"<br>P: Phys=isa0060/serio1/input0<br>
S: Sysfs=/class/input/input4<br>H: Handlers=mouse2 event4 ts2<br>B: EV=f<br>B: KEY=420 0 70000 0 0 0 0 0 0 0 0<br>B: REL=3<br>B: ABS=1000003<br>Its clear that from above output that "etchv4.0" detects my hardware as Apls-Glidepoint, which indeed is as supplied from<br>
Dell computers. Somehow xorg.conf doesn't recognizes betwwen Alps-Glidepoint and Synaptic Touchpad. Well i don't <br>know which package actually controls xorg.conf file.<br>Step 2: Then i changed xorg.conf file as shown below<br>
Section "InputDevice"<br> Identifier "Alps Glidepoint"<br> Driver "alps"<br> Option "SendCoreEvents" "true"<br> Option "Device" "/dev/psaux"<br>
Option "Protocol" "auto-dev"<br> Option "HorizScrollDelta" "20"<br> Option "VertScrollDelta" "20"<br> Option "MaxTapTime" "180"<br>
Option "FastTaps" "1"<br> Option "MaxDoubleTapTime" "100"<br> Option "TouchpadOff" "0" <br> Option "MaxTapMove" "110"<br>
Option "MaxSpeed" "1.00"<br> Option "MinSpeed" "0.50"<br>EndSection<br>Now i am able to use tapping feature perfectly. I still want to know more about xorg.conf, like how to configure <br>
it, what does each section mean, and what options does it support. I think a detail documentation is needed. I also <br>tried all permutations and combinations of "Identifier" and "Driver" field with both synaptic and alps, but none of <br>
them worked for me. The only combination that worked is shown in step 2. I hope from next time this problem <br>shouldn't be repeated in future versions of debian OS.<br><br>Regards<br>V.Sayikiran<br><br>-- System Information:<br>
Debian Release: 4.0<br> APT prefers stable<br> APT policy: (500, 'stable')<br>Architecture: i386 (i686)<br>Shell: /bin/sh linked to /bin/bash<br>Kernel: Linux 2.6.18-6-686<br>Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8)<br>