[Intel-gfx] [intel-gfx] How to determine supported HDMI versions of an Intel GPU

[Sedat Dilek]

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Hi Daniel,

I hope you are well.

While searching for a new monitor I wanted to buy a miniHDMI->HDMI
adapter or cable to connect it.

My Samsung laptop has a Intel HD graphics 3000 GPU and a miniHDMI connector.

Unfortunately, I have no idea how to get information about supported
HDMI versions and or supported resolutions when there is *no* external
monitor connected.

root# xrandr --listmonitors
Monitors: 1
0: +XWAYLAND0 1366/293x768/165+0+0  XWAYLAND0

root# egrep -i 'hdmi|snb' /var/log/Xorg.0.log
101:[    81.251] (II) modeset(0): glamor X acceleration enabled on
Mesa DRI Intel(R) HD Graphics 3000 (SNB GT2)
105:[    81.255] (II) modeset(0): Output HDMI-1 has no monitor section
176:[    81.264] (II) modeset(0): EDID for output HDMI-1
180:[    81.264] (II) modeset(0): Output HDMI-1 disconnected
337:[    87.548] (II) config/udev: Adding input device HDA Intel PCH
HDMI/DP,pcm=3 (/dev/input/event11)

I am here on Linux v5.15.10 and using KDE/Wayland 5.23.4.

Do you need further information?

Thanks in advance.

Regards,
- Sedat -