[Intel-gfx] [PATCH] drm/i915: tune down DIDL warning about too many outputs

[Daniel Vetter]

On Mon, Jun 24, 2013 at 7:30 PM, Paulo Zanoni <przanoni at gmail.com> wrote:
> 2013/6/24 Daniel Vetter <daniel.vetter at ffwll.ch>:
>> Nothing the user (nor we) really can do about this, but upsets a nice
>> quiet boot.
>>
>> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65988
>> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>
> What exactly is the impact of this problem? What happens when we
> detect this? If we don't know which problems could happen when we
> reach this condition, then I really don't think we should tune down
> the message. If we know what is the impact of that message, then I
> think we should add a nice comment explaining that, and only then
> maybe tune down the message.
>
> By the way, this message is seen on all Haswell machines I checked.

It means that the BIOS set up more outputs than what OpRegion
supports. Tends to happen a lot with SDVs. Afaik there's nothing we
can do when this happens.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch