* Legacy VBIOS and GOP driver
@ 2019-03-12 5:29 galla rao
0 siblings, 0 replies; only message in thread
From: galla rao @ 2019-03-12 5:29 UTC (permalink / raw)
To: edk2-devel
Hi All,
This query is specific to Display Panel types for LCD interface
*CSM+Legacy VBIOS*
LCD display panel with HDMI interface - No Display in BIOS but in Windows
Display is seen
*Non-CSM+GOP Driver*
Both Display in BIOS and in Windows shows up
EDID which is complaint for 1.3 is enabled,
VBIOS does not support HDMI for Legacy Oprom's ?
GOP driver constructs VBT based on Timing descriptors and supports HDMI
interface for LFP/EFP panel types?
Please enlighten me with the knowledge that is required for this specific
issue
There was a similar discussion in Open formus
(
https://forums.geforce.com/default/topic/1003241/no-signal-from-hdmi-on-post-bios-only-when-windows-loads-/
Best Regards
Galla
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