[Bug 68030] [Haswell] blank Screen with intel ddx on first use right after using fbdev ddx. Breaking SuSE Install

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68030

--- Comment #24 from Chris Wilson <chris at chris-wilson.co.uk> ---
For UXA, I think


diff --git a/src/uxa/intel_display.c b/src/uxa/intel_display.c
index 7dc0f68..3c2f964 100644
--- a/src/uxa/intel_display.c
+++ b/src/uxa/intel_display.c
@@ -1123,10 +1123,13 @@ intel_output_dpms(xf86OutputPtr output, int dpms)
                                intel_output_dpms_backlight(output,
                                                           
intel_output->dpms_mode,
                                                            dpms);
-                       drmModeConnectorSetProperty(mode->fd,
-                                                   intel_output->output_id,
-                                                   props->prop_id,
-                                                   dpms);
+
+                       if (output->crtc)
+                               drmModeConnectorSetProperty(mode->fd,
+                                                          
intel_output->output_id,
+                                                           props->prop_id,
+                                                           dpms);
+
                        if (dpms != DPMSModeOff)
                                intel_output_dpms_backlight(output,
                                                           
intel_output->dpms_mode,

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