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Re: [REGRESSION] i915: No HDMI output with 4.4

From Oleksandr Natalenko <oleksandr@natalenko.name>
Newsgroups linux.kernel
Subject Re: [REGRESSION] i915: No HDMI output with 4.4
Date 2016-02-16 12:10 +0100
Message-ID <r2LG3-751-31@gated-at.bofh.it> (permalink)
References (6 earlier) <r1nmq-8pb-13@gated-at.bofh.it> <r1vjX-5hf-5@gated-at.bofh.it> <r2sDo-2lG-31@gated-at.bofh.it> <r2sDo-2lG-29@gated-at.bofh.it> <r2tzr-2WJ-11@gated-at.bofh.it>
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Ville, Daniel,

I've just got another monitor and another DVI-HDMI cable, and here what 
I've got.

===Single Link DVI-D cable with 3 different monitors===

Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP65HQ-P 
=== not working
Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP67HQ-P 
=== not working
Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP55HQ-P 
=== works!

===Dual Link DVI-D cable with monitor that doesn't work with Single Link 
cable===

Computer DVI ——— DVI-D (Dual Link)/HDMI cable ——— HDMI LG 23MP65HQ-P === 
works!

===Laptop with HDMI output===

Laptop HDMI ——— HDMI/HDMI cable ——— HDMI LG 23MP65HQ-P === works!

I'd say that single link DVI cables are broken with new kernel, but one 
of monitors could work with such a cable. So I have no idea :(.

Regards,
   Oleksandr.

15.02.2016 17:42, Daniel Vetter wrote:
> The other downside is that it'll make us non-compliant, which was the
> point of this entire ordeal: HDMI spec forbids us from starting any i2c
> transactions when the hpd isn't signalling a present screen.
> 
> So maybe we need to buy one of these broken screens.
> 
> Oleksandr, what exact model are you using? And any chance that you 
> could
> test this on some other machine with intel gfx and latest kernel, just 
> to
> make sure this really is some issue with the sink and not with the 
> machine
> itself? And I guess you've tested with some other hdmi sink, and that
> works?

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Thread

Re: [REGRESSION] i915: No HDMI output with 4.4 Daniel Vetter <daniel@ffwll.ch> - 2016-02-09 11:20 +0100
  Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-09 17:00 +0100
  Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-11 08:50 +0100
    Re: [REGRESSION] i915: No HDMI output with 4.4 Daniel Vetter <daniel@ffwll.ch> - 2016-02-11 09:30 +0100
      Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-11 10:00 +0100
        Re: [REGRESSION] i915: No HDMI output with 4.4 Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-02-11 10:30 +0100
          Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-11 12:20 +0100
            Re: [REGRESSION] i915: No HDMI output with 4.4 Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-02-11 15:10 +0100
              Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-12 16:00 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-02-13 00:30 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-02-15 15:50 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Daniel Vetter <daniel@ffwll.ch> - 2016-02-15 16:50 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-16 12:10 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Daniel Vetter <daniel@ffwll.ch> - 2016-02-16 14:00 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-16 19:10 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-16 19:20 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-22 17:20 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-15 16:10 +0100
                Re: [REGRESSION] i915: No HDMI output with 4.4 Oleksandr Natalenko <oleksandr@natalenko.name> - 2016-02-15 17:10 +0100

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