(revised) test for linux serial ports

Author	Message
tgerbic Senior Member Joined: 25/07/2019 Location: United States Posts: 119	Posted: 06:31am 07 Jan 2025       Thought I would do one other test and attached three USB to serial adapters to my Fedora 40 system and see what it showed.  ttyUSB1 * ttyS4 * ttyS0  ttyUSB2 * ttyS5  ttyUSB0 (3 fixed devices) What I have is a motherboard with one real serial port (ttyS0), a two serial port PCIE card (ttyS4 and ttyS5) and three USB to serial converters. I also tried the older ports utility and got this: test for revised serial port finder method, 13-dec-2024 ttyS0 is type 16550A UART    /sys/bus/serial-base/drivers/port    (/type) ttyS4 is type 16550A UART    /sys/bus/serial-base/drivers/port    (/type) ttyS5 is type 16550A UART    /sys/bus/serial-base/drivers/port    (/type) ttyUSB1 is a removable device ttyUSB0 is a removable device ttyUSB2 is a removable device >>> Linux orac 6.12.7-100.fc40.x86_64 I like the organized layout on the older ports utility better.