regression: D-link DUB-H7 usb hub

More infos:

-Only the the Inutos 3 doesn't work at all as described above.

-With a Graphire 4 , it "works" BUT not with Qt/Krita : it makes no stroke at all when drawing.
(If you think this is a different bug, tell me I'll paste it in a separate report)

Ok after a clean full rebuild of krita, it actually works correctly with the graphire4 now.
(still cursor is a bit buggy if both intuos3 and graphire4 are both connected, but not too big issue..)

So the problem remains with the intuos 3 which is not working at all, it looks like it's not properly detected/configured
(see: "xserver.errors: Wacom Intuos3 9x12 stylus: Invalid type 'touch' for this device" , it may be related)

More infos:

-Using a 3.6.11 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/ in Raring, intuos3 works.
-latest 3.8.0.6 kernel update: still doesn't work.

-The graphire4 that works doesn't have any related file in /usr/share/libwacom
(exact model: 056a:0016 Wacom Co., Ltd Graphire 4 6x8 )

while the intuos3 that doesn't work have a corresponding file there
(exact model: 056a:00b2 Wacom Co., Ltd Intuos3 9x12 )

Any ideas what I could try to get it working with latest default kernel?

More infos:
I finally found out that this is a bug related to the usb hub I'm using(D-link DUB-H7).
It must be a kernel change upstream in the way it handles power or usb hub, as I can reproduce it with another different distribution, with any kernel starting from 3.7 (while with other kernel up to 3.6 it worked fine).

This change was made by a bot.

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.8 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/

Good news, I found the real problem and the fix :)

I finally found out it's not the hub but the laptop usb port/controller, as I plugged directly the intuos3 tablet on it and it still didn't work (I should have tried this from the beginning, shame on me.. )

I've identified my usb controller and the driver used, and found this bug related to same hardware:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1072918

So I've tried a mainline kernel with this patch: https://lkml.org/lkml/2013/2/18/115

Now it works perfectly :D

(note that I'm using Manjaro since a few days, so I can't test anymore on Raring alpha for now, but as I could reproduce the problem exactly I guess the fix will apply here too)