1 diff --git a/hw/xfree86/modes/xf86Crtc.h b/hw/xfree86/modes/xf86Crtc.h
2 index 802303f..6e80210 100644
3 --- a/hw/xfree86/modes/xf86Crtc.h
4 +++ b/hw/xfree86/modes/xf86Crtc.h
5 @@ -730,6 +730,8 @@ static _X_INLINE xf86OutputPtr
6 xf86CompatOutput(ScrnInfoPtr pScrn)
8 xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
9 + if (config->compat_output < 0)
12 return config->output[config->compat_output];