On Wed, May 02, 2012 at 07:33:11PM -0500, Favux ... wrote: > I saw Ubuntu patch libwacom for the BambooPT just before Precise came > out. It did fix the Tablet applet crash but I didn't understand the > crash given: > [0xfffff] > Name=General Pen > Buttons=2 > HasEraser=true > Type=General > > This brings us back to the generic styli discussion in February. I > thought the conclusion was since consumer tablets don't have a serial > id for the stylus we were to use either nothing or: > Styli=0xfffff; > If we used nothing the default would be 0xfffff anyway. It the stylus > lacked an eraser or only had one button the Tablet gui just wouldn't > let it be configured. But there was no point making generic styli for > the permutations because there wasn't an ID to select them with. > > To reiterate the Bamboo Pen and Ones do not have eraser. Nor do some > of the tablet PCs. Some of the tablet PCs have one button. The > N-Trig tablet PCs do not have an eraser. None of the Waltops have an > eraser as far as I know. > > For a tablet without an eraser is it safe to use? > Styli=0xfffff; > > Jason established that if the base model tablet supports a stylus type > that can come with or without an eraser, someone could buy and use a > stylus with an eraser (as long as it was compatible) on a tablet > originally sold with a stylus lacking an eraser. So do we need to > amend e.g. the bamboo-one.tablet file? Styli= is left out, so the > default is to 0xfffff, correct? But if someone buys a stylus with an > eraser that works on the Bamboo One that would presumably cause a > crash. Yes?
the cause for the crash is a gnome bug that the libwacom update triggered, there's a patch waiting for now. https://bugzilla.gnome.org/show_bug.cgi?id=672917 short story: with the 0xfffff stylus, g-s-d and control-center didn't initiate any styli for erasers but the driver still initialises an eraser X device. and when that's initialised but with no matching stylus, g-s-d/g-c-c crash. with a new patch to 0.5, the default styli are now 0xfffff and 0xffffe, so unless otherwise specified a device is expected to have the default stylus + eraser. for the Bamboo One and Bamboo Pen we'll have to fix the gnome bits first but meanwhile having an eraser that's not actually there beats crashing :) Cheers, Peter ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
