cdc_acm driver

Ahojte,

Mam starsi procesor AT90USB162, ktory vytvori virtualny com port. Na Windowse funguje dobre ale na Ubuntu nefunguje korektne. Ked ho pripojim k Ubuntu, tak sa zda, ze je vsetko ok.

[  649.384033] usb 2-3: new full-speed USB device number 16 using xhci_hcd
[  649.984895] usb 2-3: New USB device found, idVendor=16d0, idProduct=202d
[  649.984906] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  649.984911] usb 2-3: Product: GPSPIGEON
[  649.984915] usb 2-3: Manufacturer: BIBIBO
[  649.984920] usb 2-3: SerialNumber: GPS001
[  649.985274] usb 2-3: ep 0x83 - rounding interval to 1024 microframes, ep desc says 2040 microframes
[  650.004853] cdc_acm 2-3:1.0: ttyACM0: USB ACM device

Akonahle vsak skusim cat /dev/ttyACM0, tak sa mi ho odpoji. Vedeli by ste mi poradit?

[ 1287.623891] usb 2-3: reset full-speed USB device number 16 using xhci_hcd
[ 1292.735349] usb 2-3: device descriptor read/64, error -110
[ 1307.951116] usb 2-3: device descriptor read/64, error -110
[ 1308.167059] usb 2-3: reset full-speed USB device number 16 using xhci_hcd
[ 1313.278871] usb 2-3: device descriptor read/64, error -110
[ 1328.494535] usb 2-3: device descriptor read/64, error -110
[ 1328.710461] usb 2-3: reset full-speed USB device number 16 using xhci_hcd
[ 1333.718301] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 1338.934143] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 1339.138080] usb 2-3: device not accepting address 16, error -62
[ 1339.250132] usb 2-3: reset full-speed USB device number 16 using xhci_hcd
[ 1344.261963] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 1349.477826] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 1349.681760] usb 2-3: device not accepting address 16, error -62
[ 1349.681942] usb 2-3: USB disconnect, device number 16