diff -up xf86-video-intel-2.11.0/src/drmmode_display.c.no-flip xf86-video-intel-2.11.0/src/drmmode_display.c --- xf86-video-intel-2.11.0/src/drmmode_display.c.no-flip 2010-05-03 15:30:19.000000000 -0400 +++ xf86-video-intel-2.11.0/src/drmmode_display.c 2010-05-03 15:30:59.000000000 -0400 @@ -1504,10 +1504,15 @@ Bool drmmode_pre_init(ScrnInfoPtr scrn, gp.value = &has_flipping; (void)drmCommandWriteRead(intel->drmSubFD, DRM_I915_GETPARAM, &gp, sizeof(gp)); + + xf86DrvMsg(scrn->scrnIndex, X_INFO, + "Pageflipping %s in kernel, %s disabled in X\n", + has_flipping ? "enabled" : "disabled", + has_flipping ? "but" : "and"); if (has_flipping) { xf86DrvMsg(scrn->scrnIndex, X_INFO, - "Kernel page flipping support detected, enabling\n"); - intel->use_pageflipping = TRUE; + "Don't panic: https://bugzilla.redhat.com/588421\n"); + intel->use_pageflipping = FALSE; drmmode->flip_count = 0; drmmode->event_context.version = DRM_EVENT_CONTEXT_VERSION; drmmode->event_context.vblank_handler = drmmode_vblank_handler; diff -up xf86-video-intel-2.11.0/src/i830_dri.c.no-flip xf86-video-intel-2.11.0/src/i830_dri.c --- xf86-video-intel-2.11.0/src/i830_dri.c.no-flip 2010-03-29 14:23:02.000000000 -0400 +++ xf86-video-intel-2.11.0/src/i830_dri.c 2010-05-03 15:30:19.000000000 -0400 @@ -1013,7 +1013,7 @@ Bool I830DRI2ScreenInit(ScreenPtr screen info.CopyRegion = I830DRI2CopyRegion; #if DRI2INFOREC_VERSION >= 4 - if (intel->use_pageflipping) { + if (intel->use_pageflipping || 1) { info.version = 4; info.ScheduleSwap = I830DRI2ScheduleSwap; info.GetMSC = I830DRI2GetMSC;