[Bug 97877] [SKL] monitor is not detected unless it was active during boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97877

--- Comment #2 from Maarten Maathuis <madman2003 at gmail.com> ---
hotplug on HDMI 1.4 port:

[   55.744581] [drm:intel_get_hpd_pins] hotplug event received, stat
0x00400000, dig 0x10101210, pins 0x00000040
[   55.744589] [drm:intel_hpd_irq_storm_detect] Received HPD interrupt on PIN 6
- cnt: 0
[   55.744620] [drm:i915_hotplug_work_func] running encoder hotplug functions
[   55.744625] [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 6) received
hotplug event.
[   55.744629] [drm:intel_hdmi_detect] [CONNECTOR:46:HDMI-A-2]
[   55.744915] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050
w(1)
[   55.744922] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message,
retry
[   55.745190] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050
w(1)
[   55.745199] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter
i915 gmbus dpc
[   55.745469] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040
w(1)
[   55.745476] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message,
retry
[   55.745744] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040
w(1)

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