On Mon, 2009-05-04 at 16:36 -0400, Steve Polyack wrote: > Robert Noland wrote: > > Ok, they are at least partially disabled... I wonder if a BIOS update > > would help. > > > > Anyway, the garbled screen issue is usually associated with the caching > > method used on the PCI GART. On IGP chips we force the GART to be > > uncacheable. On PCI chips they are supposed to be able to snoop the bus > > and DTRT. All of the fixes for memory caching should be in 7. > > > > Please try the attached patch and see if that makes a difference. > > > > robert. > > > > > > Unfortunately, this didn't help. I should also clarify what I'm seeing, > as it's not complete garbage as I thought. I have a dual monitor setup, > side-by-side using xrandr. When I start X (xfce4) with drm available, > the left monitor (primary) is a sold light shade of blue, except for a > black corner which is maybe 10pix square. The right monitor displays my > typical background image with another black box over part of it. If it > shift back to the console and then back into X, I can see the outlines > of my startup windows, but they contain garbage and the outlines are > fuzzed with green and magenta garbage.
ok, how about this one... If this doesn't do it, then we need to start digging... robert. -- Robert Noland <rnol...@freebsd.org> FreeBSD
Index: ati_pcigart.c =================================================================== --- ati_pcigart.c (revision 191793) +++ ati_pcigart.c (working copy) @@ -83,7 +83,7 @@ } flags = BUS_DMA_WAITOK | BUS_DMA_ZERO; - if (gart_info->gart_reg_if == DRM_ATI_GART_IGP) +// if (gart_info->gart_reg_if == DRM_ATI_GART_IGP) flags |= BUS_DMA_NOCACHE; ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr, flags, &dmah->map);
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