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Date:      Tue, 19 Mar 2002 13:53:37 -0800
From:      Alfred Perlstein <bright@mu.org>
To:        Terry Lambert <tlambert2@mindspring.com>
Cc:        Josef Karthauser <joe@tao.org.uk>, hackers@freebsd.org
Subject:   Re: Kernel debugger and X11.
Message-ID:  <20020319215337.GR455@elvis.mu.org>
In-Reply-To: <3C97B233.F37410B@mindspring.com>
References:  <20020319201528.GI4989@genius.tao.org.uk> <3C97B233.F37410B@mindspring.com>

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* Terry Lambert <tlambert2@mindspring.com> [020319 13:49] wrote:
> Josef Karthauser wrote:
> > Of course the nicest thing would be to return the screen to text mode
> > automatically when the the kernel debugger is entered, but because X
> > controls the video registers I guess that that's not easy or possible.
> 
> [ ... ]
> 
> > Does anyone have any working practices around this problem?  I'm sure
> > that I'm not the only one of us with it.
> 
> Yes, install the GGI port to FreeBSD, and use that instead
> of the native FreeBSD console, so that the video driver is
> aware of the state it put the card in, and can put it back
> into the correct state for the debugger to work.  This also
> buys you out of the secure-mode hacks that make you leave
> certain mmap and /dev/io accesses allowed, even with a
> raised secure level, if you are going to be able to use X11.
> 
> The GGI people have bent over backwards on licensing to try
> and get the FreeBSD people to adopt this code, but apparently
> people are not doing enough console debugging from having
> run X11 for this to push its way in.

do you have links to the threads and a summary available?

-- 
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
 start asking why software is ignoring 30 years of accumulated wisdom.'
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