Date: Tue, 4 Jun 1996 14:21:22 -0500 From: Jim Lowe <james@miller.cs.uwm.edu> To: terry@lambert.org Cc: FreeBSD-current@FreeBSD.org, fcurrent@jraynard.demon.co.uk, grog@lemis.de Subject: Re: Vm fixes NG Message-ID: <199606041921.OAA16941@miller.cs.uwm.edu>
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> From: Terry Lambert <terry@lambert.org> > Subject: Re: Vm fixes NG > Cc: fcurrent@jraynard.demon.co.uk, grog@lemis.de, FreeBSD-current@FreeBSD.org > > > > > On a related note, is there any way to stop X grabbing the Ctl-Alt > > > > sequence and drop into DDB? > > > > > > We discussed this a while back while talking about ddb. The problem > > > is that it's almost impossible to find a way to set the display card > > > back to text mode. > > > > Syscons seems to be able to do this just fine via <cntl><alt><fx>. It > > would sure be nice to be able to drop into the debugger when running X > > w/o having to switch to another virtual console first. > > The only fix would be for *all* graphic modes to be settable *only* > through the console driver, so that the console driver can unset > them without having to ask a user space program to do it for it. I didn't realize that the X server was the one actually doing this. I don't think it is necessary for *all* graphics modes to be settable *only* through the console driver. Dropping the X server into the kernel seems like a big waste of space -- but I guess it is an option :-). It should be possible to download two code segments to syscons when X starts up for each particular card (or X-server). This code sequence would be ``put me into default mode'' and ``put me into graphics mode''. Of course, the X server would have to update the ``put me into graphics mode'' when you used <ctl><alt><+,->, but that wouldn't be a big deal. In any case, it is certainly do able without teaching syscons everything that X knows. All syscons really needs to know is how to switch modes back and forth. -Jim
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