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?
Some examples for debug logs: (II) /dev/input/event6 (usbParseChannel): 6 events received (II) /dev/input/event6 (usbParseChannel): 6 events received (II) /dev/input/event6 (usbParseChannel): USB Touch detected 14d (value=1) (II) /dev/input/event6 (wcmEvent): channel = 0 (II) /dev/input/event6 (wcmEvent): c=0 i=3 t=2 s=0 x=175 y=0 b=0 p=157 rz=0 tx=0 ty=0 aw=0 rw=0 t=0 df=0 px=1 st=934517456 cs=0 some time later, you'll get a more typical non-zero value: (II) /dev/input/event6 (usbParseChannel): 5 events received (II) /dev/input/event6 (usbParseChannel): 5 events received (II) /dev/input/event6 (wcmEvent): channel = 0 (II) /dev/input/event6 (wcmEvent): c=0 i=3 t=2 s=0 x=171 y=77 b=0 p=157 rz=0 tx= 0 ty=0 aw=0 rw=0 t=0 df=0 px=1 st=934517496 cs=1 Note that x is similar value but y made a big jump from 0 to 77. Once stabilized, the y value seems to track finger fine. It happens alot more often with second finger/channel 1. Sometimes but not always this can make it into the gesture logic. It can make scroll gestures look like zooms and also the other way around. I can try to detect and filter these out but want to get some feedback if this should even be happening or if I should be looking into kernel driver instead of filtering in X. Thanks, Chris ------------------------------------------------------------------------------ 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
