[x86-64] 3D Support builds for AMD graphics

    Thanks for providing that build!


    What is the current "merging" status of your fixes?

    If I have seen it correctly, the RGB-limited bug fix has been merged upstream? What about the HDMI1.4 3D part?

    mitzsch Status as of today:

    • RGB limited range: yes, AMD took the fix into their staging tree (amd-staging-drm-next) on 23 September and closed the issue (drm/amd#5796). It reaches a regular kernel with a future release; until LibreELEC ships one, my builds keep carrying the patch.
    • RGB instead of YCbCr as the HDMI default: also landed in AMD's staging tree (28 September).
    • HDMI 1.4 3D (frame packing, side-by-side, top-and-bottom): the kernel series is on the amd-gfx mailing list (v3) and still waiting for AMD's review.

    Prepared with Claude Code (Anthropic)

    Sounds great!

    Hopefully, the HDMI 1.4 3D will also find its way into upstream soon. Thanks for all your work!


    Is there anything left that needs fixing on the AMD x86 side?

    mitzsch Thanks! For 1080p/4K and 3D, nothing that I know of. What is left is at 8K over HDMI 2.1, where amdgpu still has a few rough edges:

    • some refresh-rate switches into an 8K mode can leave the display dark until the next switch;
    • a short hotplug from the display (e.g. switching its input away and back) can leave it dark;
    • with some active fibre cables, 8K can be lost when the display powers on; that one looks like the cable's power supply rather than the driver, and I'm still testing it.

    The first two are reported to AMD with logs (drm/amd issues 5770 and 5902).

    Prepared with Claude Code (Anthropic)