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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Internal display not working on Baytrail notebook."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=71051#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Internal display not working on Baytrail notebook."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=71051">bug 71051</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>Try for a little more detail:


diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 2e9d75d..93be86d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -895,6 +895,10 @@ bool ibx_digital_port_connected(struct drm_i915_private
*dev_priv,
                }
        }

+       DRM_DEBUG_KMS("checking connected status of port %c: %08x & %08x?
%d\n",
+                       port_name(port->port), 
+                       I915_READ(SDEISR), bit,
+                       (I915_READ(SDEISR) & bit) != 0);
        return I915_READ(SDEISR) & bit;
 }</pre>
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