[Bug 111219] [CI][DRMTIP] igt at kms_chamelium@hdmi-hpd-storm - dmesg-warn - Received HPD interrupt on pin 9 although disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111219

Lakshmi <lakshminarayana.vudum at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |high

--- Comment #4 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to emersion from comment #3)
> Seems like a kernel bug in HPD storm handling. The driver correctly falls
> back to polling, but then errors because of an HPD interrupt. Note that this
> happens on USB-C, which might be relevant:
> 
> <7> [71.911207] [drm:__intel_tc_port_lock [i915]] Port F/TC#4: TC port mode
> reset (dp-alt -> tbt-alt)
> 
> User impact: seems like the driver ends up in a bad state, which could
> result in a blank screen when a monitor with e.g. a bad cable is connected
> via USB-C.

Thanks for the quick assessment. Setting the priority to High.

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