[Virtual-pkg-base-maintainers] Bug#469198: Xorg.conf file in "/etc/X11/" incorrectly recognises "Alps-Glidepoint" as "Synaptic Touchpad"

[Amaya]

secerity 469198 wishlist
reassing 469198 xserver-xorg
thanks

Hello, Venigalla.

Thanks for reporting this bug in the Debian GNU/Linux OS.

I am reassigning this bug report to the xserver-xorg package, which
takes care of configuring the hardware for X to work.

I am also changing the priority, as this is an improvement request.

Check the end of this email for a link on xorg.conf documentation.

Have you considered documenting your fix in the Debian Wiki?
http://wiki.debian.org 

I am sure it would be useful for other users with similar hardware!

Venigalla Sayikiran wrote:
> Package: base
> Severity: important
> 
> 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.

That should be xserver-xorg.

> Step 2: Then i changed xorg.conf file as shown below
> Section "InputDevice"
>     Identifier    "Alps Glidepoint"
>     Driver        "alps"
>     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.

http://www.google.com/search?q=xorg.conf+explained&ie=UTF8

I am sure the synaptics package also provides information on this.

> 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.

Yes, thanks for reporting this.

Happy hacking!

-- 
  ·''`.    Moi je voudrais bien, un beau matin, qu'il y ait
 : :' :                           une fleur dans mon jardin
 `. `'                                         -- Manu Chao 
   `-  Proudly running (unstable) Debian GNU/Linux