Date: Wed, 25 May 2005 09:59:13 +0300 From: Danny Braniss <danny@cs.huji.ac.il> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: serial hangs kernel Message-ID: <E1DaprF-0004z7-M4@cs1.cs.huji.ac.il>
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i've been having some boxes hang solid (only power cycle will work) when trying to open ttyd0/cuaa0/cuad0. the message sio0: port may not be enabled gave me the clue, notice that the above is ambivalent. I enabled it in the bios, and now it's working ok, at least on an IBM-R51, i still have to check it on an IBM-T21 (that DOES have a serial port/outlet), and a Intel/IBM blade. so it seems, at first site, that if the sio hardware is on the MB, but sort of not enabled - because there is no connector -, (why the parallel port was kept and not the serial is beyond me), trying to open /dev/cuaa0 hangs the kernel. Q: in such case, shouldn't it not appear in /dev ? btw, this is with -stable & -current danny
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