Hi Terry, Nice to know that I am not the only one who cares about the touchscreen. Neither CircuitCo nor 4D Systems seem to really care about the problem. They sell the displays but don't reply to my e-mails anymore. I also reported the problem on Beaglebone IRC but did not receive any help there. I even tried tweaking a bit in the kernel but without success. I just don't have the experience to dig deeper in the ADC drivers and chase for the bug.
The latest patches were actually submitted by Zubair Lutfullah, he seems to adapt them (from the TI driver developers who write them for the older kernel afaik). Zubair told me that he already knew about the jitter problem and gave me the following reply: "The touchscreen driver that was patched in the linux kernel was different compared to the old patches in the beaglebone tree. And we try to keep the beaglebone tree close to the mainline. The old 3.8 patches were ok. The mainlined ones introduced this problem.. A fix would require a comparison of the two drivers to figure out what went wrong and upload a patch to the mainline.. It would require time.." Unfortunately, Zubair is very busy right now. He also mailed his reply to Koen Kooi, one of the main Angstrom developers (also works at CircuitCo according to his Google+ profile). I am afraid that Koen is also very busy and won't have the time to look into the issue. So we can just hope that someone with more experience can fix the issue in the near future. Regards, Anguel On Monday, September 23, 2013 7:08:36 AM UTC+2, [email protected] wrote: > > Hi Anguel > > I too have the same problem. I have a LCD4 and a LCD7 and both do the same > thing. > I suspect since the 4D Systems displays use the same drivers the > 4DCAPE-43T does the same thing, so it doesn't seem to be hardware related > at all since they use different brand touch screens. > > Have you had any reply out of CircuitCo? > Does CircuitCo actually write the drivers or is it someone else? > Can anyone help and point us to someone who wrote the drivers that we can > discuss this with? > > I know a number of other people who have these displays and experience the > exact same thing, so it is not just isolated to us 2 people. > > Please can someone point us in the right direction? > > Thanks > Terry > -- 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 [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
