Date: Sat, 24 Dec 2011 22:34:00 +1300 From: Matthew Luckie <mjl@luckie.org.nz> To: freebsd-questions@freebsd.org Subject: serial consoles Message-ID: <4EF59C88.2010202@luckie.org.nz>
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Hi I'd like to be able to login using a null modem cable to a freebsd server, from a freebsd laptop. It doesn't need to display boot messages, just allow me to login after the system has booted. I've got a null modem cable connected to my freebsd server, and on the other end is a USB serial port on my laptop. On the server I've got: uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 uart0: [FILTER] in /etc/ttys on the server: ttyu0 "/usr/libexec/getty std.9600" vt100 on secure and there is a getty running on that: $ ps xa| grep getty 1825 ?? I 0:00.00 /usr/libexec/getty std.9600 ttyu0 On the laptop, I have: ugen1.2: <FTDI> at usbus1 uftdi0: <USB to Serial Cable> on usbus1 as well as cuaU0 and ttyU0 entries in /dev. However, when I use cu on the laptop: sudo cu -l /dev/cuaU0 -s 9600 I never get a login prompt. If I press enter, the cursor scrolls down. Likewise other characters echo back. I'm reasonably sure that I'm connected to the appropriate com port on the server because if I plug it into the other com port and press enter, nothing happens. It feels to me that I'm missing something basic. Can someone provide me with some clue? Note: I'm reasonably sure the null modem cable and USB device are fine, I've used them recently on an arm board (gateworks) running freebsd and it worked fine then. Matthew
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