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t2linux / T2-Ubuntu

Ubuntu for T2 Macs
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HDMI over USB-C #97

Closed qume closed 5 months ago

qume commented 1 year ago

I have a 2019 Macbook Air, and have tried three different USB-C to HDMI (or DisplayPort) adapters (passthrough / alt mode, not displaylink). None of them work, and regardless of whether they are plugged in or not, xrandr gives the following output:

DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)

All of these work under MacOS.

Running the latest Lunar kernel

lemmyg commented 1 year ago

Hello, I would suggest to ask directly in the discord forum. it could be related to a limitation in the gpu drivers. https://discord.com/channels/595304521857630254/596303447033249822