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+--- Thread: Serial ports ttyUSB* disappear (/showthread.php?tid=16969)
Serial ports ttyUSB* disappear - albafrati - 07-06-2022
Almost every time I connect via minicom to ttyUSB1 to get gps messages all ttyUSB ports disappear from /dev and usually but not always reappear after minutes. Dmesg says this:
usb usb2-port1: disabled by hub (EMI?), re-enabling...
usb 2-1: USB disconnect, device number 3
option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
option 2-1:1.0: device disconnected
option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
option 2-1:1.1: device disconnected
option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
option 2-1:1.2: device disconnected
option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
option 2-1:1.3: device disconnected
qmi_wwan 2-1:1.4 wwan0: unregister 'qmi_wwan' usb-1c1b000.usb-1, WWAN/QMI device
rarely connection works and I can see NMEA messages.
can anybody help? thanks
PS
I'm on Mobian Bookworm