Bug 64881 - Background corruption when moving window on top of pidgin chat window [SNA]
Summary: Background corruption when moving window on top of pidgin chat window [SNA]
Status: RESOLVED DUPLICATE of bug 64841
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Chris Wilson
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-05-22 22:06 UTC by Clemens Eisserer
Modified: 2013-05-23 10:01 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
screenshot of background corruption (51.62 KB, image/jpeg)
2013-05-22 22:07 UTC, Clemens Eisserer 		no flags Details
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Description Clemens Eisserer 2013-05-22 22:06:43 UTC 
When moving a window on top of a pidgin chat window, the chat window is corrupted.
Happens with 2.21.7-5-g87295b1 and SNA on my SNB powered notebook (Fedora 19 beta)
Comment 1 Clemens Eisserer 2013-05-22 22:07:42 UTC 
Created attachment 79684 [details]
screenshot of background corruption
Comment 2 Clemens Eisserer 2013-05-22 22:13:26 UTC 
happens also with 2.21.7, if you can not reproduce it I'll try to bisect.
Comment 3 Chris Wilson 2013-05-23 10:01:05 UTC 
The big scary change would be the introduction of cow support. To test, you can disable it with:

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 371abb0..fc82e09 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -68,7 +68,7 @@
 #define USE_CPU_BO 1
 #define USE_USERPTR_UPLOADS 1
 #define USE_USERPTR_DOWNLOADS 1
-#define USE_COW 1
+#define USE_COW 0
 
 #define MIGRATE_ALL 0
 #define DBG_NO_CPU_UPLOAD 0

*** This bug has been marked as a duplicate of bug 64841 ***

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