My tablet, a Wacom Bamboo (MTE-450), is recognized and works without pressure sensitivity. I set it in screen mode in the input devices configuration panel and click save but nothing is saved; clicking on another device and then back to the one selected before shows that it's still in disabled mode. Restarting the application doesn't help. The tablet works fine in gimp. There is a workaround: editing ~/.config/inkscape/preferences.xml and changing the tablet settings from "disabled" to "screen" solves the problem. I found the same bug with the workaround on launchpad: https://bugs.launchpad.net/inkscape/+bug/1516428
Thank you for sharing this information, but as far I can see this must be solved upstream. There is nothing wrong in the ebuild.
