On Wednesday 28 November 2007, Karl Larsen wrote: > Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled > > Nothing about being set up in dmesg. It appears the kernel correctly > sees the driver. But for some reason it is not turned on. If the kernel's serial driver sees a serial port enabled it will print three lines (not just one) like this: Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A On my F8 laptop, which has no serial ports, I still get: Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled but no actual ports are found. Just because the kernel loads the serial driver doesn't mean it saw a serial port. So I ask again: is your serial port enabled or disabled in the BIOS? All modern BIOS's have the capability to disable the serial ports in hardware to where the kernel will not see the ports. Checking voltages won't help you if the chip interface has been disabled from the BIOS setup program. -- Lamar Owen Chief Information Officer Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 (828)862-5554 www.pari.edu
