Date: Wed, 2 Dec 1998 21:03:02 -0700 From: Nate Williams <nate@mt.sri.com> To: David Dawes <dawes@rf900.physics.usyd.edu.au> Cc: Nate Williams <nate@mt.sri.com>, Mike Smith <mike@smith.net.au>, Peter Jeremy <peter.jeremy@auss2.alcatel.com.au>, current@FreeBSD.ORG Subject: Re: sio breakage Message-ID: <199812030403.VAA11220@mt.sri.com> In-Reply-To: <19981203132925.G2934@rf900.physics.usyd.edu.au> References: <19981203115222.A3051@rf900.physics.usyd.edu.au> <199812030107.RAA01213@dingo.cdrom.com> <199812030114.SAA10483@mt.sri.com> <19981203132925.G2934@rf900.physics.usyd.edu.au>
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> >> I get the impression from this though that you only do interrupt > >> disables when probing or changing video modes, is that correct? > > > >I get that impression as well. > > > >> The entire train of angst here is descended from percieved problems in > >> interrupt delivery during normal operation; if you're only disabling > >> interrupts during startup then this prettymuch exonerates the X server. > > > >Except that I can say with assurance that at least older versions of the > >XFree86 server *seem* to be disabling interrupts for long periods, or at > >least calling code that disables interrupts. When I switched to the XIG > >(XInside at the time) server, all of my serial overflows went away. > > It would be good if it this could be confirmed, perhaps by tracing > when the disable/enable interrupt functions are called. In my quick > search of the code I could only find it done at server startup and > when programming a new video mode (and then only for some hardware). How would I got about doing that? > >That was the *only* configuration difference. To be sure, I even > >re-configured the XFree86 server and the problem re-occurred. Swapped > >it back and it went away. > > > >Note, this was about a year ago, maybe more so it may have changed. > >(The box in question has a S3 928 card in it..) > > Is it a PCI card? Are you using it in mmio or pio mode? S3/ISA card. Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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