USB device not recognized on Debian and missing /dev/ttyUSB

I am quite new to linux. I have two BeagleBone Black PCs with Yantrr Vayu2 4G modem, running on Debian 10. I am connecting to the internet using the ppp protocol and rnet. On first PC everything works fine. On the other one after while all /dev/ttyUSBXX are missing. The modem is connected via USB cable but I think it is not recognized. I tried everything but nothing works. I appriciate any help. Thank you!

I have tried disconnecting and rebooting multiple times, apt update and upgrade. I have run the udevadm monitor and disconnected and reconnected the modem. This is the output on PC1 (that works)

root@ES-23-001:/home/debian# sudo udevadm monitor -u
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing

UDEV  [1392.179308] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1/tty/ttyUSB1 (tty)
UDEV  [1392.267717] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2/tty/ttyUSB2 (tty)
UDEV  [1392.321697] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1 (usb-serial)
UDEV  [1392.352511] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0/tty/ttyUSB0 (tty)
UDEV  [1392.406432] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1 (usb-serial)
UDEV  [1392.424347] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1 (usb)
UDEV  [1392.435601] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0 (usb-serial)
UDEV  [1392.445325] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2 (usb-serial)
UDEV  [1392.455814] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3/tty/ttyUSB3 (tty)
UDEV  [1392.473412] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2 (usb-serial)
UDEV  [1392.512199] remove   /devices/virtual/net/ppp0/queues/rx-0 (queues)
UDEV  [1392.529478] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0 (usb-serial)
UDEV  [1392.562879] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1 (usb)
UDEV  [1392.581837] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2 (usb)
UDEV  [1392.588271] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3 (usb-serial)
UDEV  [1392.611817] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0 (usb)
UDEV  [1392.624182] remove   /devices/virtual/net/ppp0/queues/tx-0 (queues)
UDEV  [1392.626737] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0/queues/rx-0 (queues)
UDEV  [1392.640314] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2 (usb)
UDEV  [1392.650454] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0 (usb)
UDEV  [1392.652824] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3 (usb-serial)
UDEV  [1392.658781] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0/queues/tx-0 (queues)
UDEV  [1392.740723] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/usbmisc/cdc-wdm0 (usbmisc)
UDEV  [1392.743974] remove   /usbmisc (class)
UDEV  [1392.763394] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3 (usb)
UDEV  [1392.777979] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1392.789570] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3 (usb)
UDEV  [1392.817506] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1392.860212] remove   /devices/virtual/net/ppp0 (net)
UDEV  [1392.898065] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0 (net)
UDEV  [1392.918675] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4 (usb)
UDEV  [1392.923824] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4 (usb)
UDEV  [1392.939208] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1 (usb)
UDEV  [1392.943067] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1 (usb)
UDEV  [1392.959512] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1392.974344] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1392.978512] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1392.995522] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1393.011458] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1393.024231] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1393.038080] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1393.041581] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1393.054691] unbind   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1393.061798] remove   /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1399.278232] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1399.330200] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1399.338557] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1:1.0 (usb)
UDEV  [1399.350073] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1 (usb)
UDEV  [1399.715314] add      /class/usbmisc (class)
UDEV  [1399.840265] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1 (usb)
UDEV  [1400.084584] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1 (usb)
UDEV  [1400.105553] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0 (usb)
UDEV  [1400.149656] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3 (usb)
UDEV  [1400.169643] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2 (usb)
UDEV  [1400.199349] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4 (usb)
UDEV  [1400.247247] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/usbmisc/cdc-wdm0 (usbmisc)
UDEV  [1400.305731] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1 (usb-serial)
UDEV  [1400.321751] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0 (usb-serial)
UDEV  [1400.387234] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3 (usb-serial)
UDEV  [1400.422698] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2 (usb-serial)
UDEV  [1400.519200] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1/tty/ttyUSB1 (tty)
UDEV  [1400.548458] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1 (usb-serial)
UDEV  [1400.643388] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0/tty/ttyUSB0 (tty)
UDEV  [1400.655855] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1 (usb)
UDEV  [1400.711817] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0/ttyUSB0 (usb-serial)
UDEV  [1400.759873] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.0 (usb)
UDEV  [1400.765887] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2/tty/ttyUSB2 (tty)
UDEV  [1400.774009] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3/tty/ttyUSB3 (tty)
UDEV  [1400.787412] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2/ttyUSB2 (usb-serial)
UDEV  [1400.861183] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3/ttyUSB3 (usb-serial)
UDEV  [1400.872936] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.2 (usb)
UDEV  [1400.880331] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.3 (usb)
UDEV  [1401.089989] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0 (net)
UDEV  [1401.118058] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0/queues/rx-0 (queues)
UDEV  [1401.125276] add      /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4/net/wwan0/queues/tx-0 (queues)
UDEV  [1401.145860] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1/1-1.1:1.4 (usb)
UDEV  [1401.173397] bind     /devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1/usb1/1-1/1-1.1 (usb)
UDEV  [1422.925708] add      /devices/virtual/net/ppp0 (net)
UDEV  [1422.952483] add      /devices/virtual/net/ppp0/queues/rx-0 (queues)
UDEV  [1422.981487] add      /devices/virtual/net/ppp0/queues/tx-0 (queues)

And this is on the non working PC:
enter image description here
I do not understand it, but there is no info about /dev/ttyUSB, so i think it could be a driver issue or something.
And when I try the lsusb command the modem is listed there:
enter image description here
But when I try to connect the /dev/ttyUSB3 is not there:
enter image description here
enter image description here
But on the first PC it is there:
enter image description here

  • linux
  • debian
  • usb
  • beagleboneblack
  • beagleboard

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Filed under: Kiến thức lập trình - @ 20:20

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Trang chủ Giới thiệu Sinh nhật bé trai Sinh nhật bé gái Tổ chức sự kiện Biểu diễn giải trí Dịch vụ khác Trang trí tiệc cưới Tổ chức khai trương Tư vấn dịch vụ Thư viện ảnh Tin tức - sự kiện Liên hệ Chú hề sinh nhật Trang trí YEAR END PARTY công ty Trang trí tất niên cuối năm Trang trí tất niên xu hướng mới nhất Trang trí sinh nhật bé trai Hải Đăng Trang trí sinh nhật bé Khánh Vân Trang trí sinh nhật Bích Ngân Trang trí sinh nhật bé Thanh Trang Thuê ông già Noel phát quà Biểu diễn xiếc khỉ Xiếc quay đĩa
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