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The following in Terminal tends to lead me to believe that I would use ttyS4 to access a Baofeng radio in Chirp. However, when I try it, I get a "permission denied". In fact, no matter what I try, "permission denied" on all listed ports. Help.

$ dmesg | grep tty
[    0.000000] console [tty0] enabled
[   45.596670] INT3435:00: ttyS4 at MMIO 0xfe10d000 (irq = 13, base_baud = 6250000) is a 16550A
[ 4323.580098] usb 2-1: pl2303 converter now attached to ttyUSB0
K7AAY
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1 Answers1

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You need to add your user to the "dialout" group. Open a terminal an do:

sudo usermod -aG dialout username

Replace "username" with your Ubuntu user.

Source: Running CHIRP under Linux