@apacz, post #1
@snifferman, post #4
@wali7, post #11
@apacz, post #12
@snifferman, post #7
@perinoid, post #16
@snifferman, post #17
@snifferman, post #23
@Norbert, post #25
[ 239.785964] usb 1-11: new full-speed USB device number 5 using xhci_hcd [ 240.036450] usb 1-11: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54 [ 240.036460] usb 1-11: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [ 240.036464] usb 1-11: Product: USB2.0-Ser! [ 240.045232] ch341 1-11:1.0: ch341-uart converter detected [ 240.058459] ch341-uart ttyUSB0: break control not supported, using simulated break [ 240.058646] usb 1-11: ch341-uart converter now attached to ttyUSB0 [ 290.839562] usb usb1-port11: disabled by hub (EMI?), re-enabling... [ 290.839574] usb 1-11: USB disconnect, device number 5 [ 290.839776] usb 1-11: ch341_read_int_callback - usb_submit_urb failed: -19 [ 290.840046] usb 1-11: failed to send control message: -19 [ 290.840448] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 [ 290.840477] ch341 1-11:1.0: device disconnected [ 291.886072] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 292.786362] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 292.786915] usb usb1-port11: attempt power cycle [ 318.646504] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 319.546563] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 319.547116] usb usb1-port11: attempt power cycle [ 320.762581] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 321.662581] usb usb1-port11: Cannot enable. Maybe the USB cable is bad? [ 321.663141] usb usb1-port11: unable to enumerate USB device