[Bug 90916] [965gm] glitches

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90916

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Graphics corruption on Dell |[965gm] glitches
                   |Lattitude 1525 laptop       |

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
My presumption here is that it is mmap(wc) playing up.

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 0178df7..11e80f9 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -83,7 +83,7 @@ search_snoop_cache(struct kgem *kgem, unsigned int num_pages,
unsigned flags);
 #define DBG_NO_FAST_RELOC 0
 #define DBG_NO_HANDLE_LUT 0
 #define DBG_NO_WT 0
-#define DBG_NO_WC_MMAP 0
+#define DBG_NO_WC_MMAP 1
 #define DBG_NO_BLT_Y 0
 #define DBG_NO_SCANOUT_Y 0
 #define DBG_NO_DETILING 0

is perhaps the simplest way of testing.

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