Bug 86817

Summary:	HDMI unplug doesn't actually disable the output (video/audio)
Product:	DRI	Reporter:	Timo Aaltonen <tjaalton>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED DUPLICATE	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Timo Aaltonen 2014-11-28 10:37:07 UTC

This happens with both drm-intel-next and -nightly.

Nov 28 12:23:58 wilson kernel: [   76.599528] [drm:intel_hpd_irq_handler] hotplug event received, stat 0x00400000, dig 0x10101210
Nov 28 12:23:58 wilson kernel: [   76.599533] [drm:intel_hpd_irq_handler] Received HPD interrupt on PIN 5 - cnt: 0
Nov 28 12:23:58 wilson kernel: [   76.599562] [drm:i915_hotplug_work_func] running encoder hotplug functions
Nov 28 12:23:58 wilson kernel: [   76.599571] [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 5) received hotplug event.
Nov 28 12:23:58 wilson kernel: [   76.599574] [drm:intel_hdmi_detect] [CONNECTOR:35:HDMI-A-2]
Nov 28 12:23:58 wilson kernel: [   76.624704] [drm:drm_detect_monitor_audio] Monitor has basic audio support

running xrandr resets the state.

Comment 1 Damien Lespiau 2014-12-03 14:55:14 UTC

Are you doing something special with the connector? like removing it slowly? the HDMI HPD pin is shorter, so we'll detect HPD toggling and but will still be able to fetch a valid EDID.

Comment 2 Jani Nikula 2015-02-12 13:20:16 UTC

(In reply to Damien Lespiau from comment #1)
> Are you doing something special with the connector? like removing it slowly?
> the HDMI HPD pin is shorter, so we'll detect HPD toggling and but will still
> be able to fetch a valid EDID.

Timo, please provide the info.

Comment 3 Timo Aaltonen 2015-02-12 13:42:32 UTC

What a coincidence, I found this bug on a forgotten tab and did some testing :)

So yes, pulling the plug slightly slower indeed does that.. never noticed it before. Dunno if there's anything to be done then.

Comment 4 Jani Nikula 2015-02-12 13:58:11 UTC

Heh. Thanks for the info.

We could wait a bit before doing detection on unplug. I'll leave the bug open.

Comment 5 Damien Lespiau 2015-03-14 04:38:02 UTC

We seem to already have one enhancement request opened about it. Closing as duplicate.

*** This bug has been marked as a duplicate of bug 76464 ***

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