[Bug 102889] [GLK] Crash when switching to framebuffer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102889

--- Comment #1 from Imre Deak <imre.deak at intel.com> ---
VBT says to init HDMI on port A, but this isn't supported anywhere AFAICS.
Could you try the following?:

diff --git a/drivers/gpu/drm/i915/intel_ddi.c
b/drivers/gpu/drm/i915/intel_ddi.c
index 93cbbcbbc193..dcb16865b411 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2675,6 +2675,11 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
                DRM_DEBUG_KMS("VBT says port %c has lspcon\n",
port_name(port));
        }

+       if (port == PORT_A && init_hdmi) {
+               DRM_DEBUG_KMS("Overriding VBT to disable HDMI on port A\n");
+               init_hdmi = false;
+       }
+
        if (!init_dp && !init_hdmi) {
                DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible,
respect it\n",
                              port_name(port));

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