Bug#469198: Xorg.conf file in "/etc/X11/" incorrectly recognises "Alps-Glidepoint" as "Synaptic Touchpad"
reassign 469198 xserver-xorg-input-synaptics
retitle 469198 want different defaults for alps touchpads
kthxbye
On Tue, Mar 4, 2008 at 01:12:57 +0530, Venigalla Sayikiran wrote:
> I am using Dell Latitude D520 n series laptop. My laptop uses a
> Alps-Glidepoint touchpad. When i installed
> debian etchv4.0, i was not able to use the tapping feature in my laptop.
> However, i was able to use touchpad to
> move my mouse pointer. The mouse pointer moved at snail pace with touchpad
> as well as external USB mouse device.
> Then i opened /etc/X11/xorg.conf file, and i found this:
> Section "InputDevice"
> Identifier "Synaptics Touchpad"
> Driver "synaptics"
> Option "SendCoreEvents" "true"
> Option "Device" "/dev/psaux"
> Option "Protocol" "auto-dev"
> Option "HorizScrollDelta" "0"
> EndSection
> In order to increase the speed of my mouse pointer, i had to add few more
> lines to above settings. It worked for
> me. To enable tapping feature i had to go through two more steps:
> Step 1: In order to find out hardware information about my touchpad
> cat /proc/bus/input/devices
> I: Bus=0011 Vendor=0002 Product=0008 Version=7321
> N: Name="AlpsPS/2 ALPS GlidePoint"
> P: Phys=isa0060/serio1/input0
> S: Sysfs=/class/input/input4
> H: Handlers=mouse2 event4 ts2
> B: EV=f
> B: KEY=420 0 70000 0 0 0 0 0 0 0 0
> B: REL=3
> B: ABS=1000003
> Its clear that from above output that "etchv4.0" detects my hardware as
> Apls-Glidepoint, which indeed is as supplied from
> Dell computers. Somehow xorg.conf doesn't recognizes betwwen Alps-Glidepoint
> and Synaptic Touchpad. Well i don't
> know which package actually controls xorg.conf file.
This is not a bug. The same driver (called synaptics) works both for
synaptics and alps touchpads.
> Step 2: Then i changed xorg.conf file as shown below
> Section "InputDevice"
> Identifier "Alps Glidepoint"
> Driver "alps"
eh? I don't think such a driver even exists...
> Option "SendCoreEvents" "true"
> Option "Device" "/dev/psaux"
> Option "Protocol" "auto-dev"
> Option "HorizScrollDelta" "20"
> Option "VertScrollDelta" "20"
> Option "MaxTapTime" "180"
> Option "FastTaps" "1"
> Option "MaxDoubleTapTime" "100"
> Option "TouchpadOff" "0"
> Option "MaxTapMove" "110"
> Option "MaxSpeed" "1.00"
> Option "MinSpeed" "0.50"
> EndSection
> Now i am able to use tapping feature perfectly. I still want to know more
> about xorg.conf, like how to configure
> it, what does each section mean, and what options does it support. I think a
> detail documentation is needed. I also
> tried all permutations and combinations of "Identifier" and "Driver" field
> with both synaptic and alps, but none of
> them worked for me. The only combination that worked is shown in step 2. I
> hope from next time this problem
> shouldn't be repeated in future versions of debian OS.
>
FWIW, the touchpad in my dell laptop works just fine with the default
settings (tapping doesn't, but then I don't *want* it to be enabled).
Cheers,
Julien
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