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1401 and NVIDIA driver 2.5.2

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@nullmoth nullmoth released this 22 Oct 01:22
v2.5.2
f2114ab

  • HDMI and DisplayPort audio: a connected display shows up under Sound > Output with no setup. The driver publishes the display-to-codec link AppleHDA needs, keeps it current through hot-plug and monitor swaps, and lets a machine whose display audio is on another codec pin name it (PR #284, thanks Hi-Jiajun; PR #313, thanks Ersiter).

  • Laptops whose NVIDIA bring-up takes longer than 40 seconds keep their desktop: the startup hold waits while the GPU is still coming up, up to 120 seconds (nvrmholdcap=<seconds> sets it) (PR #317, thanks watchthelight).

  • Machines with several NVIDIA cards can pin the desktop to the card that drives the boot screen, and the choice survives updates (opt-in, see docs/AUTO-PRIMARY-GPU.md; PR #247, thanks is-pan).

  • High-refresh displays: sudo sysctl debug.nvrmfb_flip_latch=2 checks each flip at the next present instead of waiting for it, giving back about half a refresh period per frame (opt-in; #300, thanks xiaoming-crypto).

  • The system log is quiet again: the driver logs failed GPU allocations, not every successful one (#242).

  • Apps using Vision barcode detection (QQ and others) and Geekbench's Background Blur no longer sit at full CPU for minutes compiling one MPS kernel (#334, #111). That kernel still does not run on the GPU yet.

  • Apple TV plays video again, and dragging windows no longer kills apps like Telegram: CoreAnimation's extended-range video formats (BGRA10_XR / PBGRAXb and BGR10_XR) are supported; the driver refused them, so video and some window pipelines failed (#309, #280).

  • Shader writes to sRGB textures land, encoded as on a real Mac; they were silently dropped, which broke Blender's edit-mode viewport (#321).

  • Scaled and HiDPI desktop modes work: a desktop size different from the display's timings is scaled by the GPU's head scaler instead of being refused (PR #273, thanks Leaf-lsgtky and lsCoding666, #221).

  • Faster window updates: CPU-drawn surfaces upload from their own pages through the copy engine (PR #296, thanks mickys).

  • GPU temperature in iStat and other monitors on cards whose sensor register answers (tested on Ampere; PR #323, thanks GeekAudio).

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