Xorg 7.4 breaks mga with G450

[Robert Noland]

On Thu, 2009-01-29 at 16:39 +0000, Mark Knight wrote:
> In message <1233245396.1766.13.camel at wombat.2hip.net>, Robert Noland 
> <rnoland at FreeBSD.org> writes
> >Ok, I'll try and have a look at the detection code... It's possible that
> >this is somehow related to the switch to libpciaccess.
> 
> This patch fixes the problem for me in a horribly broken way:
> 
> >mkn at shrewd$ pwd
> >/usr/ports/x11-drivers/xf86-video-mga/work/xf86-video-mga-1.9.100/src
> >mkn at shrewd$ sudo diff -u mga_driver.c.orig mga_driver.c
> >--- mga_driver.c.orig   2009-01-29 16:31:42.000000000 +0000
> >+++ mga_driver.c        2009-01-29 16:35:01.000000000 +0000
> >@@ -1473,8 +1473,7 @@
> >        xf86ErrorF("\n");
> >     }
> >
> >-    pMga->is_Gx50 = ((pMga->Chipset == PCI_CHIP_MGAG400) && 
> >(pMga->ChipRev >= 0x80))
> >-       || (pMga->Chipset == PCI_CHIP_MGAG550);
> >+    pMga->is_Gx50 = 1;
> >     pMga->is_G200SE = (pMga->Chipset == PCI_CHIP_MGAG200_SE_A_PCI)
> >        || (pMga->Chipset == PCI_CHIP_MGAG200_SE_B_PCI);
> 
> So the cause is clear but finding the bug is way beyond me...

Hrm, very interesting... now I just have to figure out if it is
libpciaccess or the driver that is at fault.

robert.

> Cheers,
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