On Tue, 17 Mar 2009, Robert Noland wrote:
On Tue, 2009-03-17 at 12:20 -0500, Greg Rivers wrote:
On Sat, 10 Jan 2009, Robert Noland wrote:
I just merged drm (Direct Rendering) from HEAD.
- Support for latest Intel chips
- Support and fixes for many AMD/ATI chips r500 and below
- Support AMD/ATI IGP based chips (rs690/rs485)
- Lots of code cleanups
- Lots of other fixes and changes since the existing drm
is 2+ years old
If you are experiencing a "garbled" screen with certain pci/pci-e based
radeons, I have another patch in HEAD that isn't included yet.
I have a workstation with a [Radeon X600 (PCIE)] card. The X display has
been garbled since these DRM updates went in in January, and remains
garbled with 7.1-STABLE as of yesterday. As a work-around, I'm running
the up-to-date 7.1-STABLE system (both world and ports) with a
7.1-RELEASE-p2 kernel. The display is fine with the old kernel and X
works great; I even see dramatically improved performance with the new
Xorg and EXA acceleration. Your work is much appreciated.
But the garbled display with the recent DRM still plagues me.
[snip]
Could you try the attached patch.
Unfortunately, there is no noticeable difference with this patch.
Also, I'm guessing that this is a PCI based card, right? Also, it isn't
an integrated model?
Yes, this is a PCIEx16 card in a HP Compaq dc7600 desktop PC, not a
motherboard integrated adapter.
Thanks for your help. I'm willing to spend some time debugging this;
please let me know if there's more information I can provide or other
tests or patches I can try.
--
Greg Rivers
Index: drm_bufs.c
===================================================================
--- drm_bufs.c (revision 189907)
+++ drm_bufs.c (revision 189908)
@@ -1106,7 +1106,7 @@
if (size == 0)
return 0;
- order = ffsl(size) - 1;
+ order = flsl(size) - 1;
if (size & ~(1ul << order))
++order;
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