Hi Paul,

On 1/11/22 12:28, Paul Menzel wrote:

Dear Linux folks,

I am using Linux 5.16, and I am unable to unset `VGA_ARB` in Kconfig (`make menuconfig`). I have an Asus F2A85-M PRO with an AMD A6-6400K APU (integrated Radeon graphics device), so no legacy stuff.

From `drivers/gpu/vga/Kconfig`:

config VGA_ARB
        bool "VGA Arbitration" if EXPERT

You can modify VGA_ARB if you set ^^^^^^ "EXPERT".

default y         depends on (PCI && !S390)         help           […]

config VGA_ARB_MAX_GPUS         int "Maximum number of GPUs"         default 16         depends on VGA_ARB         help           […]

config VGA_SWITCHEROO         bool "Laptop Hybrid Graphics - GPU switching support"         depends on X86         depends on ACPI         depends on PCI         depends on (FRAMEBUFFER_CONSOLE=n || FB=y)         select VGA_ARB         help           […]

But in `make menuconfig` I am unable to unselect it.

    -*- VGA Arbitration

and the help says:

    Symbol: VGA_ARB [=y]
    Type  : bool
      Depends on: HAS_IOMEM [=y] && PCI [=y] && !S390
      Visible if: HAS_IOMEM [=y] && PCI [=y] && !S390 && EXPERT [=n]
      Location:
        Main menu
         -> Device Drivers
           -> Graphics support
    Selected by [n]:
      - VGA_SWITCHEROO [=n] && HAS_IOMEM [=y] && X86 [=y] && ACPI [=y] && PCI [=y] && (!FRAMEBUFFER_CONSOLE [=y] || FB [=y]=y)

So, VGA_SWITCHEROO is not set, and, therefore, as `Selected by [n]:` suggests, I thought I’d be able to deselect it.

It’d be great if you could help me out.


Kind regards,

Paul