Wacom Bamboo Pen - Pressure too sensitive (Needs kernel 3.1 patch backported)

Try messing around with MaxZ value in 10-wacom.config (or 50-wacom.config) in /usr/lib/X11/xorg.conf.d/.
I had similar issue on my Lenovo TabletPC, and it turns out that setting MaxZ value to 256 (or close) solved the pressure issue - maybe this is the same problem. Lenovo has 256 steps of pressure I guess, you may need to change it to somethink like 512 or 1024 (or even 2048) in Bamboo.

@ODDie That doesn't do anything unfortunately. That option doesn't even appear in the man page for wacom.

ODDie is basically correct. It turns out to be an error in the linux-input kernel commit for the Bamboo Pen in wacom_wac.c. The pressure is erroneously set to 255 instead of 1023:

static const struct wacom_features wacom_features_0xD4 =
 { "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 255, 63, BAMBOO_PT };

A submission correcting the mistake will be made shortly to linux-input.

In the meantime on Natty you could use the wacom.ko from input-wacom. HOW TO compile and install it is described on the Bamboo P&T HOW TO: http://ubuntuforums.org/showthread.php?t=1515562 or the Linux Wacom Project mediawiki site.

Or you could use Irie Shinsuke's PPA which uses input-wacom and is linked on the HOW TO.

@Favux Sorry, but not everything you said is correct. I tried the Irie Shinsuke PPA, but that didn't help one bit. I'll have a look at it's source code but I suspect it has the same problem as the official Natty package. The only thing that helped was compiling from the source from the linuxwacom project homepage. Now it's working perfectly.

Are there any changes required on the X side, or is it purely kernel changes needed?
Are the changes already included in the kernel we have for oneiric?

Just the kernel change needed (from 255 to 1023 levels).

The change is in the current 3.1 kernel at github. But the 3.0-rc7 kernel doesn't have the change yet. Don't have the current Oneiric available to check.

Favux, if you can dig up a link to the 3.1 patch, the kernel team might be willing to try an sru of it.

Bryce this is a link to the commit on github that would have been in the pull request: https://github.com/dtor/input/commit/a001a8f3cedb0e3cb92ff3abdb3170df7da92d47

Is that good enough for the kernel team? The 512 in the commit message body is from the Wacom sites' literature claiming 512 levels of pressure for the Pen. But my tester reported that still wasn't correct and it turned out to be 1024 like the other BambooPT models.

Moving milestone to oneiric-updates as we're currently in Final Freeze.

Status changed to 'Confirmed' because the bug affects multiple users.

I suppose the linux/precise task can be closed now, as we have Linux 3.2?

Yep, closing for precise.