I have the following code snippet that no longer works as it did previously:
struct js_event js; int jsfd = -1;
if((jsfd = open("/dev/input/js0",O_RDONLY)) != -1){
while(1) {
if(read(jsfd,&js,sizeof(struct js_event)) == sizeof(struct js_event)) {
if (js.type==JS_EVENT_BUTTON) {
if(js.value == 1) printf("button press\n");
if(js.value == 0) printf("button released\n");
}
}
}
}
This used to print one press/release pair for each button press, but now it prints many.
I have a USB joystick, specifically, the EMS PS2 to USB adapter (http://www.hkems.com/product/ps2/ps2-usb2.htm), which was working fine before the upgrade from Edgy to Feisty.
I've found perhaps related information at Kerneltrap here: http://kerneltrap.org/node/2199 (check the comments, people seem to be having trouble) which was referenced by a LinuxQuestions comment here: http://www.linuxquestions.org/questions/showthread.php?p=2725764
A better description is provided by Paul Zaremba at Kerneltrap: http://
His comment:
I have an EMS USB II (two port PS2->USB converter, usb id 0b43:0003) that worked perfectly a few months ago. Ever since I upgraded to Ubuntu Feisty with kernel 2.6.20-15 it is detected as a 4 axis 16 button joystick instead of an 8 axis 32 button joystick. It appears the dual ports are sharing the axes and buttons. Of course, this makes the device useless since the axis/button status are constantly changing according to /dev/input/js0.