hi all, This problem has been nagging me for some time now and i have approched it from every possible angle.
My setup: WTI serial switch with 16 RS-232 ports; 16 null modem-cable connecting each of these ports to the first serial port of my servers, all FreeBSD, from 4.3 release to 4.6 Stable/Release. My problem is that for certain servers (3 actually), if i enable console access on the serial (by editing /etc/ttys and adding the line for ttyd0 to: ttyd0 "/usr/libexec/getty std.9600" cons25 on secure), within 3-4 seconds, the OS freezes completely. This can be reproduced indefinitely. At first i thought it was related to the os; the problematic servers runs respectively: FreeBSD 4.4-REL, 4.5-REL and 4.6-STABLE. This can't be, the same (possible) bug in three different iteration of the os! Then I noticed that the sio messages on these 3 machines we're different from the one's where serial was working, namely this: sio0: configured irq 4 not in bitmap of probed irqs 0 sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 8250 sio1: configured irq 3 not in bitmap of probed irqs 0 instead of this: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A So I figured, the culprit may be something related to the serial ports' irq. So I recompiled the kernel, changed the default irq of each sio to one that hopefully wasn't used by the system (after checking /var/run/dmesg.boot). But that stopped the kernel altogether, when detecting the ppc/lp devices. I'm pretty shure it's the irq; how can i change the irq of sio to some irq not used by the system? Tien Duc To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-questions" in the body of the message
