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mithro / HDMI2USB-litex-firmware-old

Opsis SoC based on LiteX
BSD 2-Clause "Simplified" License
1 stars 6 forks source link

Macbook Pro HDMI out requires 'inputX on' to work #37

Open xfxf opened 7 years ago

xfxf commented 7 years ago

Observed repeatedly during LCA.

Macbook Pro (at least my 2013 Retina but observed over a ton of different models) HDMI port doesn't work until 'input1 on' (if using input1) is typed in. Unplug laptop, plug back in, same issue.

Works perfectly without this using mDP adapter.

mithro commented 7 years ago

Can you get the HDMI2USBmond output when doing this?

enjoy-digital commented 7 years ago

Just to be sure, if you activate debug on hdmi_in: https://github.com/mithro/HDMI2USB-litex-firmware/blob/nextgen/firmware/hdmi_in0.c#L399 do you get the "dvisamplerX: connected" message when you plug the laptop?

If not, the the laptop is faulty, if yes then we can investigate on the enable sequence.

xfxf commented 7 years ago

It isn't a single laptop, it's most/all of presenters Macbook's they're plugging in. This is a constant issue (almost all of us have do 'input1 on' in all rooms for all talks with presenters that have macs during this conference).

I have insufficient data currently to know if it's only some, or all, but this is happening repeatedly across many rooms. Replacing Redmere HDMI cable does not resolve.

enjoy-digital commented 7 years ago

I was asking that juste to be sure it's not related to the hotplug detection with Macbook. At least that the first thing to look at.