Same problem here. BBB keeps on disconnecting my USB devices. Il giorno martedì 20 ottobre 2015 12:56:11 UTC+2, Guido Paoluzi Cusani ha scritto: > > My communication link: > BBB USB <-> USB2514B based USB hub <-> FTDI FT232 > Abruptly fails for no evident reason (possibly EMI or other induced > noise... there is a vast evidence ( better say a lot of rumors ) of the BBB > USB being very sensitive all over the web). > uname -r output: > 4.1.10-ti-r21 > dmesg output: > [ 4951.213705] usb 1-1.1: USB disconnect, device number 3 > [ 4951.215742] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now > disconnected from ttyUSB0 > [ 4951.216492] ftdi_sio 1-1.1:1.0: device disconnected > [ 4951.458827] usb 1-1.1: new full-speed USB device number 5 using > musb-hdrc > [ 4951.538810] usb 1-1.1: device descriptor read/64, error -32 > [ 4951.728815] usb 1-1.1: device descriptor read/64, error -32 > [ 4951.918801] usb 1-1.1: new full-speed USB device number 6 using > musb-hdrc > [ 4951.998947] usb 1-1.1: device descriptor read/64, error -32 > [ 4952.188807] usb 1-1.1: device descriptor read/64, error -32 > [ 4952.378887] usb 1-1.1: new full-speed USB device number 7 using > musb-hdrc > [ 4952.798847] usb 1-1.1: device not accepting address 7, error -32 > [ 4952.898825] usb 1-1.1: new full-speed USB device number 8 using > musb-hdrc > [ 4953.318766] usb 1-1.1: device not accepting address 8, error -32 > [ 4953.325078] usb 1-1-port1: unable to enumerate USB device > the link doesn't recover unless the hub goes through a hardware reset or a > power OFF\ON cycle; > The hub appears to go in "Suspended Mode" when the problem arises. > I am wondering: > there is a Sitara Linux MUSB Issue with the USB_RESUME in AMSDK > 08.00.00.00: is the kernel 4.1.10-ti-r21 incorporating the workaround? > Any way I can software reset the hub from Linux? > Any hint on what is happening? > Thanks in advance for any help on this. > > Guido > > > > >
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