Hi Robin,
At first, I do not know the solution.
Basically the USB host detects a device if it (the device) pulling one
of the data line up usually by 1.5kOhm resistor. Pulling up D+ means it
is full speed device and pulling D- means low speed.
So, the below mentioned case happens when a device pulls the line, but
after the host sending requests it does not send responses.
The cause can diversifed:
- contact problem (broken wire)
- dead device controller
- and so on...
I don't know whether this can help or not. Firstly you may need to check
cable.
/sza2
PIRON Robin wrote:
I don't manage to connect my ipaq via usb anymore. If I launch the HTC
bootloader, and then plug the device I see in my dmesg:
usb 1-1: new full speed USB device using uhci_hcd and address 21
usb 1-1: device not accepting address 21, error -71
Then nothing in my lsusb list and no ttyUSB in my /dev.
I tried modprobing usbserial and ipaq modules but no change.
If someone could help...
Robin
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