El martes, 3 de septiembre de 2013 06:47:44 UTC-5, Anguel escribió: > > Hi! > > I have a 4DCAPE-43T LCD and tested it with Beaglebone Black and the latest > Angstrom image (2013.08.21). Unfortunately, I am experiencing input jitter > / jumping. I use TSlib's ts_calibrate for calibration and ts_test for > testing. In Gnome's calibration tools the same problem appeared: Instead of > clicking, I often have some dragging or even random jumping of the pointer. > The problem appears especially if the pressure applied to the touchscreen > is lower. > > I wrote 4D SYSTEMS support regarding the touchscreen jitter and got the > following reply: > "The 4D Cape 43T LCD has been based on the LCD4 from Circuitco and uses > the same drivers written for the LCD4 on the Angstrom. Upon testing and > verification, the problem of jitter is evident as well on the LCD4 display > of Circuitco using the Angstrom 2013.06.20 and 2013.08.21 images so in > effect this has nothing to do with the hardware but it’s a software > problem." > > Actually, I found a video on Youtube with LCD7 where a similar jump / > jitter problem can be seen: > http://www.youtube.com/watch?v=vEfnwL-Jxgw @ min 2:00 > > Any idea how the problem can be solved? > > Thanks in advance, > Anguel >
El martes, 3 de septiembre de 2013 06:47:44 UTC-5, Anguel escribió: > > Hi! > > I have a 4DCAPE-43T LCD and tested it with Beaglebone Black and the latest > Angstrom image (2013.08.21). Unfortunately, I am experiencing input jitter > / jumping. I use TSlib's ts_calibrate for calibration and ts_test for > testing. In Gnome's calibration tools the same problem appeared: Instead of > clicking, I often have some dragging or even random jumping of the pointer. > The problem appears especially if the pressure applied to the touchscreen > is lower. > > I wrote 4D SYSTEMS support regarding the touchscreen jitter and got the > following reply: > "The 4D Cape 43T LCD has been based on the LCD4 from Circuitco and uses > the same drivers written for the LCD4 on the Angstrom. Upon testing and > verification, the problem of jitter is evident as well on the LCD4 display > of Circuitco using the Angstrom 2013.06.20 and 2013.08.21 images so in > effect this has nothing to do with the hardware but it’s a software > problem." > > Actually, I found a video on Youtube with LCD7 where a similar jump / > jitter problem can be seen: > http://www.youtube.com/watch?v=vEfnwL-Jxgw @ min 2:00 > > Any idea how the problem can be solved? > > Thanks in advance, > Anguel > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
