On Tue, 2013-10-08 at 11:08 -0700, Ping Cheng wrote: > On Tue, Oct 8, 2013 at 12:07 AM, Bastien Nocera <had...@hadess.net> wrote: > > Hey, > > > > We're having some problems in GNOME with the calibration UI, especially > > after a calibration has been done because the factory values for "Wacom > > Tablet Area" have been modified, and we cannot use those (especially if > > a previous erroneous calibration has been made) to calibrate the device > > again.
My apologies, I should have followed up on this. I've spent the day looking into the problem, and found the very many bugs. > > Is there a way to reset those values to the factory settings? > > "xsetwacom set dev_id Area -1 -1 -1 -1" will set the area back to > factory values. But I don't think we want to run xsetwacom when Gnome > Control Center is running. So, another way is to set it through "area" > property directly from X server. Refer to > xf86-input-wacom/tools/xsetwacom.c for example. The -1 special value isn't handled in the driver though, is it? If it is, I've just wasted quite a bit of time implementing our own reset in GNOME :/ > > Are the default values available anywhere but in the driver? If the values > > aren't computed, could we move those to libwacom so we can fix > > calibration? > > To provide Gnome with factory tablet area, we can add the values to > libwacom. However, I wonder if retrieving the values from X server, or > even better directly from the kernel, is feasible for Gnome. This > approach avoids the extra middle-ware, which leads to less maintenance > issue. > > To retrieve the factory values directly from kernel, you can use > "ioctl(fd, EVIOCGABS(ABS_X), &absinfo)", ABS_Y would be used for Y > value. Details can be found at xf86-input-wacom/src/wcmUSB.c. > > Let me know if I've missed your point. I've poked at the valuators directly, as they include the default values. The good news is though, that after spending 12 hours on it, we have a working calibration again. Cheers ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134071&iu=/4140/ostg.clktrk _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
