diff -rNu xf86-video-ati-6.9.0-backup/src/radeon_accelfuncs.c xf86-video-ati-6.9.0/src/radeon_accelfuncs.c
--- xf86-video-ati-6.9.0-backup/src/radeon_accelfuncs.c	2008-06-27 01:33:25.000000000 +0200
+++ xf86-video-ati-6.9.0/src/radeon_accelfuncs.c	2008-07-17 02:56:15.000000000 +0200
@@ -1238,6 +1238,8 @@
     a->SolidLineLimits.x2 = pScrn->virtualX-1;
     a->SolidLineLimits.y2 = pScrn->virtualY-1;
 
+    a->maxOffPixWidth = a->maxOffPixHeight = 48;
+
     /* Call miSetZeroLineBias() to have mi/mfb/fb routines match
        hardware accel two point lines */
     miSetZeroLineBias(pScreen, (OCTANT5 | OCTANT6 | OCTANT7 | OCTANT8));
