Earlier I posted about having long delay issues when reading back bytes from a FTDI 232BM USB->Serial chip. Now, I've noticed that after a long period of time of semi-continual use (maybe 8+ hours) I see the following messages in my kernel.log:
Mar 24 23:46:42 displaytest kernel: hub 2-0:1.0: port 2 disabled by hub (EMI?), re-enabling... Mar 24 23:46:42 displaytest kernel: usb 2-2: USB disconnect, address 4 Mar 24 23:46:42 displaytest kernel: ftdi_sio 2-2:1.0: device disconnected Mar 24 23:46:42 displaytest kernel: usb 2-2: new full speed USB device using address 5 Mar 24 23:46:42 displaytest kernel: ftdi_sio 2-2:1.0: FTDI FT232BM Compatible converter detected Mar 24 23:46:42 displaytest kernel: usb 2-2: FTDI FT232BM Compatible converter now attached to ttyUSB1 Of course I have a test program running overnight and when the device comes back up it switches device names (because my test program has the port still open), which causes it to die at that point. Is there any particular reason the hub would disable that port? Or am I in flakey hardware land here? Thanks. -- James Lamanna ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
