Open filipleple opened 1 month ago
The GOP driver doesn't support HDMI 2.1 FRL. The port is configured for FRL 10Gbps, so maybe that's why it doesn't work. Although I would expect GOP to fall back to TMDS signaling for FRL-enabled ports
@mkopec Understood, do you have any suggestion for improvements here, or not really?
@wessel-novacustom how about your judgment of importance here? I think it would be definitely nice to have, but maybe not that critical if it would be too complex (time-consuming) to handle right now.
@macpijan I just tested disabling FRL and disabling the fixed mode feature we enabled for scaling, and it didn't help. I'm not sure what's going wrong here, GPIOs and VBT are configured correctly so GOP should Just Work.
@mkopec Understood, do you have any suggestion for improvements here, or not really?
@wessel-novacustom how about your judgment of importance here? I think it would be definitely nice to have, but maybe not that critical if it would be too complex (time-consuming) to handle right now.
Not important enough to fix it before the first release.
Set of PRs fixing the issue: https://github.com/Dasharo/coreboot/pull/547 https://github.com/Dasharo/edk2/pull/162
The GraphicsPeim in FSP has some problems with initializing the HDMI, but EFI x64 GOP driver initializes all possible displays (LCD -when lid open, Type-C and HDMI).
Confirmed resolved by linked PRs, closing
Applies to dGPU models too - on those models the HDMI port is wired to the discrete graphics, so we'd have to somehow handle dual GPUs in UEFI.
Component
Dasharo firmware
Device
NovaCustom V54 14th Gen
Dasharo version
v0.9.0-rc7
Dasharo Tools Suite version
No response
Brief summary
There's no HDMI output in FW on V540TU, neither with the lid open nor shut
How reproducible
100%
How to reproduce
Plug in a HDMI cable and check if you see anything on the monitor, get into setup menu, try with the lid shut and open
Expected behavior
There should be HDMI video output in FW when the lid is shut
Actual behavior
No HDMI output in FW on V540TU
Screenshots
No response
Additional context
Tested on both 16:9 and 16:10 aspect ratio monitors
Solutions you've tried
No response