The EXA corruptions people are reporting appear to go away when you set the MigrationHeuristic to greedy which means all pixmaps have their buffers pushed to the frame buffer. We force enable it as a work around. Some day it will go away

1 files changed, 6 insertions, 0 deletions

diff --git a/src/via_exa.c b/src/via_exa.c
index 2f6b77f..dac9794 100644
--- a/src/via_exa.c
+++ b/src/via_exa.c
@@ -771,6 +771,8 @@ viaExaTexUploadToScreen(PixmapPtr pDst, int x, int y, int w, int h, char *src,
     return TRUE;
 }
 
+#define EXAOPT_MIGRATION_HEURISTIC  0
+
 Bool
 viaInitExa(ScreenPtr pScreen)
 {
@@ -895,6 +897,10 @@ viaInitExa(ScreenPtr pScreen)
                    "[EXA] Disabling EXA accelerated composite.\n");
     }
 
+    /* Evil hack that will go away */
+    if (!xf86GetOptValString(pScrn->options, EXAOPT_MIGRATION_HEURISTIC))
+        xf86ReplaceStrOption(pScrn->options, "MigrationHeuristic", "greedy");
+
     if (!exaDriverInit(pScreen, pExa)) {
         free(pExa);
         return FALSE;