Date: Mon, 19 Feb 1996 09:11:52 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-current@FreeBSD.org (FreeBSD-current users) Cc: KentH@HNS.St-Louis.Mo.US Subject: Re: Keyboard lockout on 2.x.x Message-ID: <199602190811.JAA11333@uriah.heep.sax.de> In-Reply-To: <199602190351.VAA00546@gwydion.hns.st-louis.mo.us> from "Kent Hamilton" at Feb 18, 96 09:51:10 pm
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As Kent Hamilton wrote: > > > > When exactly does it lock up? > > Ohh, sorry, I've seen this mentioned here before so I guess I thought > it was a well known problem. I'm using syscon and when flipping to a > different vt you'll get locked out. Does this happen for all keyboards? Does disconnecting/reconnecting the keyboard help? Keyboard lockup during VT switch is most likely due to a collision on the keyboard interface arising out of simultaneously sending a character code, while the driver is sending a SET LEDS command to the keyboard. The keyboard serial interface hasn't been designed to be two-way, but later (for the PC/AT) been used for this. Since you can rlogin into the machine, try compiling the kbdio(8) hacker's tool from /usr/src/usr.sbin/pcvt/kbdio, and see if you could also issue a keyboard reset. Sorry, no man page, only the usage help (try -h). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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