#12964: Intel Extreme does not support DisplayPort output
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Reporter: tqh | Owner: rudolfc
Type: bug | Status: assigned
Priority: normal | Milestone: Unscheduled
Component: | Version:
Drivers/Graphics/intel_extreme/ivybridge | R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 12926,
Platform: All | 13478
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Comment (by tqh):
I don't have any VBT command in Debian Buster, I use the drivers that come
as default.
My guess is that bios info is not to be trusted on UEFI. With UEFI there
is only the GOP driver that does graphics. https://wiki.osdev.org/GOP
Since Intel added ACPI functions for its graphics cards, I think the
correct way is to get the data from the _DDC in ACPI:
https://uefi.org/specs/ACPI/6.4/Apx_B_Video_Extensions/acpi-extensions-
for-display-adapters-introduction.html?highlight=display
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Ticket URL: <https://dev.haiku-os.org/ticket/12964#comment:93>
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