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Hi,
I am using 2.6.30 on AT91SAM9G45 ARM board. USB is getting disconnected and connect again with following given kernel debug.
hub 1-0:1.0: state 7 ports 2 chg 0000 evt ...
- 05-13-2011 #1Just Joined!
- Join Date
- May 2011
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- 2
USB connect disconnect
Hi,
I am using 2.6.30 on AT91SAM9G45 ARM board. USB is getting disconnected and connect again with following given kernel debug.
hub 1-0:1.0: state 7 ports 2 chg 0000 evt 00004
atmel-ehci atmel-ehci: GetStatus port2 status 001002 POWER sig=se0 CSC
hub 1-0:1.0
ort 2, status 0100, chage 0001, 12 Mb/s
usb 1-2: USB disconnect, address 2
usb 1-2: Unregistering device
usb 1-2: usb_disable_device numing all URBs
usb 1-2: unregistering interface 1-2:1.0
usb 1-2: 1.0: uevent
usb 1-2: uevent
atmel-ehci atmel-ehci: GetStatus port2 status 001803 POWER sig=j CSC CONNECT
.........
Help me out from this problem.
Regards,
Ashish Joshi.
- 05-13-2011 #2Linux Guru
- Join Date
- Apr 2009
- Location
- I can be found either 40 miles west of Chicago, or in a galaxy far, far away.
- Posts
- 8,961
Bad cable, bad connector, bad port, flaky device? Have you tried replacing the cable, moving the device to another port? What about other USB devices?
Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!
- 05-14-2011 #3Just Joined!
- Join Date
- May 2011
- Posts
- 2
USB connect disconnect
USB device is directly connected to host, no cable is there. This problem is coming in all three system. USB connect disconnect happens any time, some time it takes four to five days. When this happens the voltage level on D+ goes to 3.1V from 0.004volts. May be the problem when usb leave suspend mode?
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