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ddcutil tries to access other i2c devices even if `--bus` is used to specify the bus number
$ ddcutil --bus 5 getvcp 0x60
Device /dev/i2c-0 is not readable and writable. Error = EACCES(13): Permission denied
Device /dev/i2c-1 is not readable and writable. Error = EACCES(13): Permission denied
Device /dev/i2c-2 is not readable and writable. Error = EACCES(13): Permission denied
Device /dev/i2c-3 is not readable and writable. Error = EACCES(13): Permission denied
Devices possibly used for DDC/CI communication cannot be opened: /dev/i2c-0 /dev/i2c-1 /dev/i2c-2 /dev/i2c-3
See https://www.ddcutil.com/i2c_permissions
VCP code 0x60 (Input Source ): HDMI-2 (sl=0x12)
@jaythegreatman Your issue should be addressed by the recent update in branch 2.1.5-dev.