Accept modes with less than 25% horizontal blanking again (you can push old
gtf timing to below 25%), only stop cvt reduced blanking. Users should be free to blow up their monitors if they so choose.
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@ -1,3 +1,11 @@
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2006-01-31 Luc Verhaegen <libv@skynet.be>
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* hw/xfree86/common/xf86Mode.c: (xf86CheckModeForMonitor):
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Accept modes with less than 25% horizontal blanking again (you can
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push old gtf timing to below 25%), only stop cvt reduced blanking.
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Users should be free to blow up their monitors if they so choose.
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2006-01-30 Donnie Berkholz <spyderous@gentoo.org>
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* GL/mesa/shader/slang/Makefile.am:
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@ -1,4 +1,4 @@
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/* $XdotOrg: xserver/xorg/hw/xfree86/common/xf86Mode.c,v 1.7 2005/07/03 08:53:42 daniels Exp $ */
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/* $XdotOrg: xserver/xorg/hw/xfree86/common/xf86Mode.c,v 1.8 2005/12/28 15:22:21 libv Exp $ */
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/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Mode.c,v 1.69 2003/10/08 14:58:28 dawes Exp $ */
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/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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@ -816,16 +816,20 @@ xf86CheckModeForMonitor(DisplayModePtr mode, MonPtr monitor)
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if (mode->Flags & V_INTERLACE)
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mode->CrtcVTotal = mode->VTotal |= 1;
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/* Check wether this mode has acceptable blanking */
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if (((mode->HDisplay * 5 / 4) & ~0x07) > mode->HTotal) {
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/* Is this a CVT Reduced blanking mode? */
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if ((mode->HTotal - mode->HDisplay) != 160)
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return MODE_HBLANK_NARROW;
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/*
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* Usually, CVT normal blanking is never more than one character below 25%,
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* but for low frequencies and weird ratios, you can get below that.
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* When you go into the low frequencies with the gtf generator, of which
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* normal CVT is a simplification, you almost always go below 25%.
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*
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* So if we see awkward blanking, then it's either directly CVT or GTF
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* generated, or the user supposedly knows what he's doing. So we only stop
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* reduced blanking here, as that might accidentally hit us. -- libv
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*/
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if (((mode->HTotal - mode->HDisplay) == 160) &&
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(((mode->HDisplay * 5 / 4) & ~0x07) > mode->HTotal))
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if (!monitor->reducedblanking)
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return MODE_NO_REDUCED;
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}
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return MODE_OK;
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}
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