[Bug 101044] I915 driver caused VGA got no ignal after plug-out then plug-in the VGA cable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101044

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #12 from Jani Nikula <jani.nikula at intel.com> ---
The hardware in question does not have VGA natively. There's a DP-to-VGA branch
adapter. The unplug can be seen in the logs, but there's no hotplug event for
the re-plug.

Please try this:

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1ae9de5cf39c..0d28b6dc4153 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2468,6 +2468,8 @@ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int
mode)
 {
        int ret, i;

+       return;
+
        /* Should have a valid DPCD by this point */
        if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
                return;

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