usb serial lockup

Vince jhary at unsane.co.uk
Fri Nov 10 13:58:20 UTC 2006


Ian Smith wrote:
> On Fri, 10 Nov 2006, Vince wrote:
> 
>  > 	I have a bit of a wierd problem, My laptop has no serial ports, as is
>  > the norm these days, so i have a FTDI based usb serial connector which
>  > is very handy and works well. However, what i have found is that freebsd
>  > still detects a serial port anyway
>  > 
>  > sio0: configured irq 4 not in bitmap of probed irqs 0
>  > sio0: port may not be enabled
>  > sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
>  > sio0: type 8250 or not responding
>  > sio1: configured irq 3 not in bitmap of probed irqs 0
>  > sio1: port may not be enabled
>  > 
>  > and if i'm careless and type tip com1 ( or use minicom on /dev/{ttyd0,
>  > cuad0} as root or as a user I hard lock my laptop, nothing responding
>  > and i have to powercycle it. this is 100% reproducable.
> 
> add to /boot/loader.conf (ditto for sio.1 wouldn't hurt):
> 
> hint.sio.0.disabled=1
> 
Yeah that would work. didnt even think to look there.
Doh.


cheers,
Vince

> Ian
> 
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