Sorting out input devices 3.

Okay, so the cursor jumped again after the last changes.
I changed the /usr/lib/X11/xorg.conf.d/10-wacom.conf like this:

Section "InputClass"
Identifier "Wacom serial class"
MatchProduct "Serial Wacom Tablet"
MatchDevicePath "/dev/ttyS0"
Driver "wacom"
# Option "Device""/dev/ttyS0"
Option "Type" "stylus"
Option "ForceDevice" "ISDV4"
Option "Button2" "3"
# Option "Button3" "4"
Option "TPCButton" "on"
EndSection

Section "InputClass"
Identifier "Wacom serial class"
MatchProduct "Serial Wacom Tablet eraser"
MatchDevicePath "/dev/ttyS0"
Driver "wacom"
# Option "Device""/dev/ttyS0"
Option "Type" "eraser"
Option "ForceDevice" "ISDV4"
Option "TPCButton" "on"
EndSection

and now the system doesn't recognize the eraser. (this wasn't intended)
However, the jumping never happened ever since, and that was already about a week ago.

What in hell is happening?

Ununtu takes up almost 5 GB on my hard drive, and every "Important Security Update" seems to be more than 50MB! What in hell happened?!? Ubuntu used to take up 3.5 GB, even after several updates of even after updating to a newer version. And suddenly, the 6 GB space I dedicated to it will not be enough!

Sorting out input devices 2.

I didn't experience the cursor jumping jet today.
What I did today was

~$ sudo gedit /usr/lib/X11/xorg.conf.d/10-wacom.conf

now it looks like:

Section "InputClass"
Identifier "Wacom serial class"
MatchProduct "Serial Wacom Tablet"
MatchDevicePath "/dev/ttyS0"
Driver "wacom"
# Option "Device""/dev/ttyS0"
# Option "Type" "stylus"
Option "ForceDevice" "ISDV4"
Option "Button2" "3"
# Option "Button3" "4"
Option "TPCButton" "on"
EndSection

Section "InputClass"
Identifier "Wacom serial class"
MatchProduct "Serial Wacom Tablet eraser"
MatchDevicePath "/dev/ttyS0"
Driver "wacom"
# Option "Device""/dev/ttyS0"
# Option "Type" "eraser"
Option "ForceDevice" "ISDV4"
Option "TPCButton" "on"
EndSection

And works just right. We'll see what's gonna happen with the jumping.
What I basically did here was to add eraser and add proper device path, and remove unnecessary entries, like the one for supporting touch, and another one, which I don't know what it was for.

I didn't try removing the #-s jet. I jus put them in in case I want to adjust the file further to match what xorg.conf used to be before Lucid.