Date: Wed, 11 Sep 1996 08:34:23 +0200 (MET DST) From: sos@FreeBSD.org To: bde@zeta.org.au (Bruce Evans) Cc: cvs-all@freefall.freebsd.org, CVS-committers@freefall.freebsd.org, cvs-sys@freefall.freebsd.org, peter@freefall.freebsd.org Subject: Re: cvs commit: src/sys/i386/isa syscons.c Message-ID: <199609110634.IAA27277@ra.dkuug.dk> In-Reply-To: <199609102015.GAA02194@godzilla.zeta.org.au> from "Bruce Evans" at Sep 11, 96 06:15:48 am
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In reply to Bruce Evans who wrote:
>
> > Modified: sys/i386/isa syscons.c
> > Log:
> > Hack workaround XFree86 switching failure when used with /dev/sysmouse
> > and xdm, possibly in general.
> >
> > What was happening was that the server was doing a tcsetattr(.. TCSADRAIN)
> > on the mouse fd after a write. Since /dev/sysmouse had a null t_oproc,
> > the drain failed with EIO. Somehow this spammed XFree86 (!@&^#%*& binary
> > release!!), and the driver was left in a bogus state (ie: switch_in_progress
> > permanently TRUE).
Hmm, that problem doesn't exist with Xinsides server (which I use
with my strange P9100 card). I'll have a look at this before commenting
further..
> This reminds me of what happens when crtscts is locked on for the mouse.
> My mouse doesn't supply CTS, so draining takes forever. Killing XFree86
> require kill -9 from somewhere other than the console IIRC, and leaves
> the console driver in a bogus state. Some graphics cards go into a
> strange state when XFree86 is started up again in this state. Sometimes
> XFree86 manages to kill itself after a timeout, but the console driver
> is left in a bogus state.
Hmm, maybe its time I take a look at XFree86's screen switch code again
(well I did write it at sme point :) ), as the Xinside server
doesn't seem to suffer from all these problems...
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Soren Schmidt (sos@FreeBSD.org) FreeBSD Core Team
So much code to hack -- so little time.
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