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| -rw-r--r-- | Documentation/user-manual.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt index 08e8b0b7b..e4d20270d 100644 --- a/Documentation/user-manual.txt +++ b/Documentation/user-manual.txt @@ -3547,8 +3547,12 @@ USB port. Ensuring the user has write permission to the USB serial port: On Unix-like operating systems the USB ports can only be accessed by users who -are members -of the +dialout+ group. If one is not root, one may not be a member of +are members special group that can be e.g. ++dialout+ or +uucp+. This can be verified by listing the appropriate +device permissions e.g. by +ls -l /dev/ttyUSB0+. Note that the number in +the file name depends on how many USB devices you have connected, and +must be adjusted appropriately. +If one is not root, one may not be a member of that group and won't be able to use the USB port. Let us assume one's username is 'johnB'. |