Date: Sun, 9 Aug 2009 18:08:13 +0100 From: "John ." <comp.john@googlemail.com> To: freebsd-questions@freebsd.org Subject: serial console on a machine without a serial port, but with a USB port Message-ID: <abc784790908091008u7f9f1ecaubcf1e57d2a7affae@mail.gmail.com>
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I need to have access to the console on my server, so that I can do stuff like grab the output of a crash or, if it halts whilst booting up, to take remedial action. I had planned on doing this from a much older machine whose sole function is to provide that capability. This older machine will be remotely accessible, and it sits next to the server machine, on its own real IP address, running ssh and maybe tip or whatever to read the console of the other machine. Sort of like a poor man's ILO. The problem is, the server is a much newer machine and it has no serial port - just USB. Is the only way round this to install a serial card? Would a serial-to-usb converter work? Will usb to usb work? Both machines have USB. on the server machine with a generic kernel (7.2-STABLE), I have this: dmesg | grep -E "^sio[0-9]" sio0: configured irq 4 not in bitmap of probed irqs 0 sio0: port may not be enabled sio0: configured irq 4 not in bitmap of probed irqs 0 sio0: port may not be enabled sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 sio0: type 16550A sio0: [FILTER] sio1: configured irq 3 not in bitmap of probed irqs 0 sio1: port may not be enabled sio0: configured irq 4 not in bitmap of probed irqs 0 sio0: port may not be enabled sio0: configured irq 4 not in bitmap of probed irqs 0 sio0: port may not be enabled sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 sio0: type 16550A sio0: [FILTER] sio1: configured irq 3 not in bitmap of probed irqs 0 sio1: port may not be enabled and /dev has no sio* entries cheers -- John
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