[BUG] "Discrete GPU" option selects the wrong GPU on a desktop with GPU passthrough

[Admicos]

Describe the bug

I admit, the title might not be the best, but read on.

Display:
    X.org: true
    X.org (port): :99.0
    Wayland: true
Graphics:
    vendors:
        nvidia: &id002
            vendor: nvidia
            envs:
                __NV_PRIME_RENDER_OFFLOAD: '1'
                __GLX_VENDOR_LIBRARY_NAME: nvidia
                __VK_LAYER_NV_optimus: NVIDIA_only
            icd: ''
        amd: &id001
            vendor: amd
            envs:
                DRI_PRIME: '1'
            icd: /usr/lib/x86_64-linux-gnu/GL/vulkan/icd.d/radeon_icd.x86_64.json:/usr/lib/i386-linux-gnu/GL/vulkan/icd.d/radeon_icd.i686.json
    prime:
        integrated: *id001
        discrete: *id002
Kernel:
    Type: Linux
    Version: 5.16.0-zen1-1-zen
Distro:
    Name: GNOME
    Version: '"41 (Flatpak runtime)"'
Tools:
    cabextract: true
    p7zip: true
    patool: true
Bottles_envs: null

In the above healthcheck output, there are two GPUs detected. One Nvidia, one AMD.

The Nvidia GPU is assigned to be passed through to a VM, which means it uses the vfio-pci driver instead of a display driver.

The "Discrete GPU" option on Bottles picks this GPU instead of the working AMD gpu, which causes DXVK to fail with Required Vulkan extension VK_KHR_surface not supported and DxvkInstance: Failed to create instance.

Installation

• Method: Flatpak
• Version 2022.1.14-trento-2

To Reproduce 0. Have two GPUs, make a GPU Passthrough VM

1. Create a new Bottle (the default settings enable the "broken" option
2. Try to run anything that uses DirectX
3. Profit

Expected behavior

Bottles should be able to detect if a GPU "works" or not. A possible solution is to first test if Vulkan or OpenGL works by creating a simple test program that tried to use these APIs, and running it on each GPU, though there could be issues with that approach.

Desktop (please complete the following information):

• OS: Arch Linux
• Version: latest (with KDE, if that changes anything)
• Display server: Wayland

Additional context

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev e7)
    Subsystem: Micro-Star International Co., Ltd. [MSI] Radeon RX 580 Armor 4G OC [1462:3418]
    Kernel driver in use: amdgpu
    Kernel modules: amdgpu
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1002:aaf0]
    Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:aaf0]
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel
02:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] [10de:1c82] (rev a1)
    Subsystem: ASUSTeK Computer Inc. Device [1043:85d3]
    Kernel driver in use: vfio-pci
    Kernel modules: nouveau
02:00.1 Audio device [0403]: NVIDIA Corporation GP107GL High Definition Audio Controller [10de:0fb9] (rev a1)
    Subsystem: ASUSTeK Computer Inc. Device [1043:85d3]
    Kernel driver in use: vfio-pci
    Kernel modules: snd_hda_intel

[mirkobrombin]

So the problem is Bottles activating that option by default? In your case, just turn it off right?

[Admicos]

Yes, turning the option off solves the issue.

On January 17, 2022 10:10:31 AM GMT+03:00, Mirko Brombin @.***> wrote:

So the problem is Bottles activating that option by default? In your case, just turn it off right?

-- Reply to this email directly or view it on GitHub: https://github.com/bottlesdevs/Bottles/issues/940#issuecomment-1014204967 You are receiving this because you authored the thread.

Message ID: @.***>

[mirkobrombin]

Yes, turning the option off solves the issue. … On January 17, 2022 10:10:31 AM GMT+03:00, Mirko Brombin @.> wrote: So the problem is Bottles activating that option by default? In your case, just turn it off right? -- Reply to this email directly or view it on GitHub: #940 (comment) You are receiving this because you authored the thread. Message ID: @.>

Ok I'll check how to automate the process, thanks for reporting