I've looked at a lot of kernel data by putting extra buffer print statements in the kernel over the past few months. I've yet to see the tablet report or jump to zero in the usb buffer when a finger is down (unless it's at 0,0 or an edge obviously). Wherever this zero is coming from is definitely the cause of the jumping we've seen in relative mode, but it's most likely somewhere between the kernel and x.org. The tablet seems pretty solid with it's data. I have noticed that a finger event that contains the same data from the previous set of events sent to the x.org driver don't seem to show up in the x.org driver. Is this expected behavior?
On Sun, 2010-02-07 at 20:46 -0800, Ping Cheng wrote: > On Sun, Feb 7, 2010 at 5:15 PM, Chris Bagwell <[email protected]> wrote: > > Hi all, > > > > I've a quick question on expected behavior when a finger first comes > > into proxity for touch pads while in relative mode. I see that its > > very common for the first event message to have a non-zero X value but > > the Y value will be zero. Is this expected or would it be a kernel > > bug (I'm using 0.8.5-9+bamboo patches)? If expected, is something > > supposed to always be filtering this out? > > Please trace into the kernel. If the coordinate is wrong even in the > kernel, filtering it out in the kernel helps everyone who uses it > later on. This is one of the reasons that I want to give us more time > to test the driver. I've added a filter in the X driver (in the coming > -10). If you come up with a filter in the kernel, we maybe able to > include it in -10 as well. > > Ping > > ------------------------------------------------------------------------------ > The Planet: dedicated and managed hosting, cloud storage, colocation > Stay online with enterprise data centers and the best network in the business > Choose flexible plans and management services without long-term contracts > Personal 24x7 support from experience hosting pros just a phone call away. > http://p.sf.net/sfu/theplanet-com > _______________________________________________ > Linuxwacom-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Linuxwacom-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
