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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNA HSW] Corruption in OpenGL video output (DRI2 + TearFree)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95414#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNA HSW] Corruption in OpenGL video output (DRI2 + TearFree)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95414">bug 95414</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Stick with that kernel and try:
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c642385..9adfe4b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3733,6 +3733,7 @@ struct i915_vma *
obj->base.read_domains = I915_GEM_DOMAIN_CPU;
obj->base.write_domain = I915_GEM_DOMAIN_CPU;
}
+ obj->cache_dirty = true;
trace_i915_gem_object_change_domain(obj,
old_read_domains,</pre>
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