On 08.04.2009 15:38, Nelson Castillo wrote: > On Wed, Apr 8, 2009 at 5:52 AM, morphis <[email protected]> wrote: > (cut) >> We first disabled all touchscreen filters and the manner was still >> there, but it disappeared when we only disabling the group filter and >> let all other filters there. Our current solution is not to use the >> group filter. > > Well, at least you can use a few of them :-) > > median + mean should help. > > Are you getting a lot of noise with no filters? With median + mean? >
Here is a sample output which I get while fetching every two seconds a packet from /dev/input/touchscreen0: r...@eten-m800 ~ $ ./show-event /dev/input/touchscreen0 size of input_event: 16 will read 2 packets per second from /dev/input/touchscreen0 ... type: 3 code: 0 value: 951 type: 3 code: 0 value: 951 type: 3 code: 0 value: 951 type: 3 code: 0 value: 918 type: 3 code: 0 value: 891 <-- Pressed the touchscreen type: 3 code: 0 value: 832 type: 3 code: 0 value: 835 type: 3 code: 0 value: 409 type: 3 code: 0 value: 408 type: 3 code: 0 value: 951 type: 3 code: 0 value: 807 type: 3 code: 0 value: 818 type: 3 code: 0 value: 910 type: 3 code: 0 value: 897 <-- Pressed the touchscreen type: 3 code: 0 value: 908 type: 3 code: 1 value: 963 <-- no more pressure on the touchscreen type: 3 code: 0 value: 951 type: 3 code: 0 value: 951 type: 3 code: 0 value: 950 type: 3 code: 1 value: 961 type: 3 code: 1 value: 961 type: 3 code: 1 value: 961 type: 3 code: 1 value: 963 type: 3 code: 0 value: 951 type: 3 code: 0 value: 951 type: 3 code: 1 value: 963 type: 3 code: 1 value: 963 type: 3 code: 1 value: 963 type: 3 code: 1 value: 961 type: 3 code: 1 value: 961 type: 3 code: 1 value: 961 type: 3 code: 1 value: 963 type: 3 code: 1 value: 963 type: 3 code: 1 value: 963 type: 3 code: 1 value: 963 [...]
