Distribution: Slackware 9.0 Hardware Environment: AthlonXP 2800, Abit NF7s-V2.0, nForce2, EHCI USB2.0 Software Environment: modprobe hid, joydev Problem Description: The joystick refuses to work until I read the contents of /proc/bus/usb/devices Then it works fine... some bizzare initialization ritual I guess... I used to have an Asus motherboard on linux 2.4 same problem, (but I never tried reading the usb devices in proc on that system) And my current system has the same problem when under 2.4, (but again, I've not tried reading the /proc/bus/usb/devices file on kernel 2.4) I think there's something screwy in the joystick that needs some wierd "init" operation... Lastly, I'd never compiled the usb joystick support *directly* into my kernel, it's always been a module. If that helps... Steps to reproduce: 1. Plug in a CHproduts Flightstick Pro USB 2. Boot linux, load the hid, input, joydev, modules 3. run jstest /dev/input/js0 and you get no data from the stick... 4. cat /proc/bus/usb/devices 5. run jstest /dev/input/js0 and it works! 6. unplug the joystick 7. unload the modules 8. re-load the modules 9. run jstest /dev/input/js0 and it doesn't work, again 10. cat /proc/bus/usb/devices 11. run jstest /dev/input/js0 and it works again. (repeat ad nauseum) I'll be happy to provide more information if it is needed.
same behaviour with kernels 2.6.4 and 2.6.7 for CH Products Flight Sim Yoke USB CH Pro Pedals USB Rudder Pedals work out of the box without need for cat command.
when CH Products Flight Sim Yoke USB is plugged in, it creates a line in /var/ log/messages saying drivers/usb/input/hid-core.c: ctrl urb status -32 received, which is EPIPE in fact. All USB joysticks use the same code in hid driver. As joystick "pedals" does work without cat and joystick "yoke" works after cat, it might be a problem of a deeper layer during initialization.
Should no longer be an issue due to the way the /proc/bus/usb/devices logic was rewritten a few kernel releases ago. If this still happens on 2.6.13-rc6 or greater, please reopen this bug.