HDMI hotplug fails when using VT or boot on text mode

HDMI hotplug fails when using VT or boot on text mode

[Sanchez, AdolfoX]

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When using i915
O.S. Ubuntu 15.10
Pltaform: Bay Trail I

Issue: When the O.S. is on Virtual Terminal or Text Mode it doesn't detect when connecting HDMI display, the issue is not present on graphic mode.

Is this expected behavior?

Best Regards,
Adolfo.

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Re: HDMI hotplug fails when using VT or boot on text mode

[Jani Nikula]

On Tue, 10 Nov 2015, "Sanchez, AdolfoX" <adolfox.sanchez@intel.com> wrote:
> When using i915
> O.S. Ubuntu 15.10
> Pltaform: Bay Trail I
>
> Issue: When the O.S. is on Virtual Terminal or Text Mode it doesn't
> detect when connecting HDMI display, the issue is not present on
> graphic mode.
>
> Is this expected behavior?

The userspace is responsible for doing the modeset in response to a
hotplug uevent. i915 doesn't enable the output on it's own.

BR,
Jani.



-- 
Jani Nikula, Intel Open Source Technology Center
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Re: HDMI hotplug fails when using VT or boot on text mode

[Sanchez, AdolfoX]

Hello Jani

Thanks for your clarification.
On graphic mode what userspace application handles this? Is the X server?
And in this case if the customer wants to enable hotpluging  he should write an udev script to handle the situation? 


Best Regards,
Adolfo.

-----Original Message-----
From: Jani Nikula [mailto:jani.nikula@linux.intel.com] 
Sent: Tuesday, November 10, 2015 7:54 AM
To: Sanchez, AdolfoX; intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] HDMI hotplug fails when using VT or boot on text mode

On Tue, 10 Nov 2015, "Sanchez, AdolfoX" <adolfox.sanchez@intel.com> wrote:
> When using i915
> O.S. Ubuntu 15.10
> Pltaform: Bay Trail I
>
> Issue: When the O.S. is on Virtual Terminal or Text Mode it doesn't 
> detect when connecting HDMI display, the issue is not present on 
> graphic mode.
>
> Is this expected behavior?

The userspace is responsible for doing the modeset in response to a hotplug uevent. i915 doesn't enable the output on it's own.

BR,
Jani.



--
Jani Nikula, Intel Open Source Technology Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: HDMI hotplug fails when using VT or boot on text mode

[Sanchez, AdolfoX]

An update about this issue:

I requested the customer to perform the command udevadmin monitor on text mode to check if the driver is issuing uevents, the command shows activity when there the hdmi is unplugged but it doesn't show any activity when the hdmi is plugged again.

On graphic mode udevadmin monitor shows both kernel and udev events (plugging and unplugging), is there anything else that we should check when on text mode?

Best Regards,
Adolfo Sanchez
-----Original Message-----
From: Sanchez, AdolfoX 
Sent: Tuesday, November 10, 2015 9:08 AM
To: 'Jani Nikula'; intel-gfx@lists.freedesktop.org
Subject: RE: [Intel-gfx] HDMI hotplug fails when using VT or boot on text mode

Hello Jani

Thanks for your clarification.
On graphic mode what userspace application handles this? Is the X server?
And in this case if the customer wants to enable hotpluging  he should write an udev script to handle the situation? 


Best Regards,
Adolfo.

-----Original Message-----
From: Jani Nikula [mailto:jani.nikula@linux.intel.com]
Sent: Tuesday, November 10, 2015 7:54 AM
To: Sanchez, AdolfoX; intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] HDMI hotplug fails when using VT or boot on text mode

On Tue, 10 Nov 2015, "Sanchez, AdolfoX" <adolfox.sanchez@intel.com> wrote:
> When using i915
> O.S. Ubuntu 15.10
> Pltaform: Bay Trail I
>
> Issue: When the O.S. is on Virtual Terminal or Text Mode it doesn't 
> detect when connecting HDMI display, the issue is not present on 
> graphic mode.
>
> Is this expected behavior?

The userspace is responsible for doing the modeset in response to a hotplug uevent. i915 doesn't enable the output on it's own.

BR,
Jani.



--
Jani Nikula, Intel Open Source Technology Center
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