I have an Elegoo Mega2560 R3. On my Windows machine, it recognizes fine and loads exactly like a Mega2560. I have a System76 laptop running Pop_os!. When I attach the board, I cannot connect to the port in Arduino studio (reinstalled today with newest version).
When I check, I don't see the ttyACM1 device (ACM1 specifically because of items listed below).
lsusb before plugging in
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 5986:9102 Acer, Inc BisonCam,NB Pro Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsusb after plugging in
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 5986:9102 Acer, Inc BisonCam,NB Pro Bus 001 Device 020: ID 2341:0010 Arduino SA Mega 2560 (CDC ACM) Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dmsg after plugging in
[65178.203006] usb 1-6: new full-speed USB device number 19 using xhci_hcd [65178.353353] usb 1-6: New USB device found, idVendor=2341, idProduct=0010, bcdDevice= 0.01 [65178.353359] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=220 [65178.353363] usb 1-6: Product: Arduino Mega 2560 [65178.353366] usb 1-6: Manufacturer: Arduino (www.arduino.cc) [65178.353369] usb 1-6: SerialNumber: 7563331323335130F170 [65178.357650] cdc_acm 1-6:1.0: ttyACM1: USB ACM device
ls /dev/tty*
/dev/tty /dev/tty23 /dev/tty39 /dev/tty54 /dev/ttyS10 /dev/ttyS26 /dev/tty0 /dev/tty24 /dev/tty4 /dev/tty55 /dev/ttyS11 /dev/ttyS27 /dev/tty1 /dev/tty25 /dev/tty40 /dev/tty56 /dev/ttyS12 /dev/ttyS28 /dev/tty10 /dev/tty26 /dev/tty41 /dev/tty57 /dev/ttyS13 /dev/ttyS29 /dev/tty11 /dev/tty27 /dev/tty42 /dev/tty58 /dev/ttyS14 /dev/ttyS3 /dev/tty12 /dev/tty28 /dev/tty43 /dev/tty59 /dev/ttyS15 /dev/ttyS30 /dev/tty13 /dev/tty29 /dev/tty44 /dev/tty6 /dev/ttyS16 /dev/ttyS31 /dev/tty14 /dev/tty3 /dev/tty45 /dev/tty60 /dev/ttyS17 /dev/ttyS4 /dev/tty15 /dev/tty30 /dev/tty46 /dev/tty61 /dev/ttyS18 /dev/ttyS5 /dev/tty16 /dev/tty31 /dev/tty47 /dev/tty62 /dev/ttyS19 /dev/ttyS6 /dev/tty17 /dev/tty32 /dev/tty48 /dev/tty63 /dev/ttyS2 /dev/ttyS7 /dev/tty18 /dev/tty33 /dev/tty49 /dev/tty7 /dev/ttyS20 /dev/ttyS8 /dev/tty19 /dev/tty34 /dev/tty5 /dev/tty8 /dev/ttyS21 /dev/ttyS9 /dev/tty2 /dev/tty35 /dev/tty50 /dev/tty9 /dev/ttyS22 /dev/tty20 /dev/tty36 /dev/tty51 /dev/ttyprintk /dev/ttyS23 /dev/tty21 /dev/tty37 /dev/tty52 /dev/ttyS0 /dev/ttyS24 /dev/tty22 /dev/tty38 /dev/tty53 /dev/ttyS1 /dev/ttyS25
dialout
group, and 2) disabled ModemManager? – Majenko♦ Apr 24 '20 at 17:58