Jerky mouse movements on Rpi B+ V1.2 (resolved)

[Jean-Roch Blais]

I installed GIMX on the recent Rpi B+ v1.2, following the instructions and it went very well. I plugged mouse, keyboard, DS4 and USB-TTY in the 4 available USB ports, ssh'ed to Rpi through the RJ45 connector, disabled triggerhappy, and ran GIMX, with my FarCry4 PS4 config and macros, copied from my PC. Everything works fine, except that the horizontal and vertical mouse mouvements are very jerkey. I guess this is to be expected on a Rpi, but in the forum some people claim it runs fine on Rpi, no mention of jerkiness. Are there, in your experience, ways to reduce this to a comfortable level, or is it simply impossible on a Rpi ? Are there other faster boards, as easy as the Rpi, that you know of ?

Thanks
jrb.

[Matlo]

Maybe the mouse polling frequency is too high.
You can try reducing it by adding this line to your /boot/cmdline.txt file:

Code: Select all

usbhid.mousepoll=8

Reboot to apply the value.
You can try the following values: 8 (125Hz), 4 (250Hz) and 2 (500Hz).

(and don't use the --status and --curses arguments, as the generate network packets that consume USB bandwidth).

[Jean-Roch Blais]

Well you did it again, it works fine with mousepoll=8, the motions are much more fluid, thanks. I tried 10 which is ok but 4 is a bit less fluid. So I guess 8 is the right choice. Overall, it is still a bit slower than the PC but it is very playable !

I will now look for a script to start the Rpi and maybe stop it "properly" when I plug/unplug the USB-TTY adapter... I guess disabling other services might also speed up the Rpi response, in fact I could leave only the essential services to make a didecated GIMX Rpi !

Any thoughts ?

A+ !