> i am using 2.6.11, Try to use a more current kernel. Likely it won't matter here, but 2.6.11 is over 18 months old by now ... :) > and EHCI HCD. during boot up i get > following message: > > "usb 1-0:1.0: over-current change on port 1" > > and after the system is up none of the USB device > connected to USB port are detected. > > can you please tell me what over-current change mean. USB devices can draw a certain amount of current, with a maximum of 500 mA in high power configurations. USB hubs, like root hubs, may be able to detect when that current limit is exceeded; if so, it's reported as an "over current" error. > and Is this error responsible for my device not > getting detected. Likely. When a port issues an overcurrent fault, the device connected to it is disconnected. We have seen cases where some USB controllers (EHCI and UHCI, I don't recall it with OHCI) *wrongly* report such over-current errors ... at least, "wrongly" in the sense that no device is connected, so we think the motherboard must be at fault, badly wired or whatever. - Dave -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
