On Tue, 2020-05-26 at 10:47 +0200, Oliver Neukum wrote: > > Am Montag, den 25.05.2020, 16:49 +0000 schrieb Joakim Tjernlund: > > > To be clear, I can pull the cable and put it back and there are no garbage chars. > > There is also this error: > > [Wed May 20 14:03:25 2020] cdc_acm 1-6.3:1.1: acm_ctrl_irq - usb_submit_urb failed: -19 > > [Wed May 20 14:03:25 2020] usb 1-6-port2: attempt power cycle > > [Wed May 20 14:03:26 2020] usb 1-6.3: USB disconnect, device number 86 > > [Wed May 20 14:03:26 2020] cdc_acm 1-6.3:1.1: failed to set dtr/rts > > > > Should not this auto reenable emulate reattaching the USB cable? > > Hi, > > yes it should. You find the garage characters after the EMI event. How > sure are you that they arrive after the event and not during the event? > Don't known how to determine that? I can say that acm_ctrl_irq - usb_submit_urb failed: -19 and cdc_acm 1-6.3:1.1: failed to set dtr/rts are unique to this EMI event though. It does not feel like this reenabling follow the same procedure as a cable pull? As I can only see the above two errors I think we should get rid of these first. Jocke
