VA-API not using the GPU renderer set in `adapter_name` config

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your issue described in the documentation?

- [x] I have read the documentation

### Is your issue present in the latest beta/pre-release?

This issue is present in the latest pre-release

### Describe the Bug

When I set `adapter_name = /dev/dri/renderD128` in `sunshine.conf`, the logs indicate that VA-API is using a different GPU than the one I specified. It's only when I also set `output_name` that it uses the correct GPU, indicating that `adapter_name` is not working as expected.

## GPU rendering devices
```
$ ls /dev/dri/renderD*
/dev/dri/renderD128  /dev/dri/renderD129
```

## vainfo `/dev/dri/renderD128`
```
$ vainfo --display drm --device /dev/dri/renderD128
Trying display: drm
libva info: VA-API version 1.23.0
libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_22
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.23 (libva 2.23.0)
vainfo: Driver version: Mesa Gallium driver 25.3.1 for AMD Radeon RX 9070 XT (radeonsi, gfx1201, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
vainfo: Supported profile and entrypoints
      VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
      VAProfileH264Main               :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointEncSlice
      VAProfileH264High               :	VAEntrypointVLD
      VAProfileH264High               :	VAEntrypointEncSlice
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointEncSlice
      VAProfileNone                   :	VAEntrypointVideoProc
```

## vainfo `/dev/dri/renderD129`
```
$ vainfo --display drm --device /dev/dri/renderD129
Trying display: drm
libva info: VA-API version 1.23.0
libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_22
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.23 (libva 2.23.0)
vainfo: Driver version: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
vainfo: Supported profile and entrypoints
      VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
      VAProfileH264Main               :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointEncSlice
      VAProfileH264High               :	VAEntrypointVLD
      VAProfileH264High               :	VAEntrypointEncSlice
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileNone                   :	VAEntrypointVideoProc
```

Notice that `/dev/dri/renderD128` is `AMD Radeon RX 9070 XT`. If I set `adapter_name = /dev/dri/renderD128` and restart sunshine, in the logs I will see the following:
```
[2026-01-01 15:29:00.729]: Info: config: 'adapter_name' = /dev/dri/renderD128
...
[2026-01-01 15:29:01.377]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
...
[2026-01-01 15:47:51.216]: Error: Could not open codec [av1_vaapi]: Function not implemented
```

This is indicating that even though the RX 9070 XT is specified as the renderer, it is still trying to use the iGPU for the AMD Ryzen 7 9800X3D. I can confirm this, because AV1 is not available to the client, even though the RX 9070 XT supports it.

I've found that setting `output_name = 1` is a workaround. When setting this, AV1 becomes available and I see the following in the logs instead:
```
[2026-01-01 15:29:00.729]: Info: config: 'adapter_name' = /dev/dri/renderD128
[2026-01-01 15:29:00.729]: Info: config: 'output_name' = 1
...
[2026-01-01 15:31:48.933]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Radeon RX 9070 XT (radeonsi, gfx1201, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
...
[2026-01-01 15:31:49.017]: Info: Creating encoder [av1_vaapi]
```

It appears that `adapter_name` is not having any affect in choosing with GPU VA-API uses. It is only when explicitly selecting an output that is plugged in to the GPU that is encodes with the correct one.

My setup is non-standard. See `Additional Context` for more info.

### Expected Behavior

Setting `'adapter_name' = /dev/dri/renderD128` will make VA-API use the `/dev/dri/renderD128` GPU for encoding regardless of what output is selected.

### Additional Context

In order to support custom resolutions, I am creating a virtual display with an edid firmware binary.

**AMD RX 9070 XT**
- DP-1 -> Physical monitor
- DP-2 -> Physical monitor
- DP-3 -> Nothing plugged in
  - Reserved for virtual display 
- HDMI-A-1 -> Physical monitor

**Ryzen 7 9800X3D**
- HDMI-A-2 -> Physical monitor
  - Plugged in to motherboard's HDMI port

To create the virtual display, I have the following kernel arguments (following [this post](https://gist.github.com/iamthenuggetman/6d0884954653940596d463a48b2f459c)):
```
firmware_class.path=/usr/local/lib/firmware drm.edid_firmware=DP-3:edid/virtual-display.bin video=DP-3:e
```

In my sunshine apps, my `Do Command` runs a script that disables all monitors except for DP-3 using `kscreen-doctor`. The script looks like the following:
```sh
#!/bin/bash

PRIMARY_DISPLAY='DP-3'
MODE="${SUNSHINE_CLIENT_WIDTH}x${SUNSHINE_CLIENT_HEIGHT}@${SUNSHINE_CLIENT_FPS}"

kscreen-doctor output.${PRIMARY_DISPLAY}.enable \
    output.${PRIMARY_DISPLAY}.mode.${MODE} \
    output.${PRIMARY_DISPLAY}.brightness.100 \
    output.${PRIMARY_DISPLAY}.priority.1 \
    output.DP-1.disable \
    output.HDMI-A-2.disable \
    output.DP-2.disable \
    output.HDMI-A-1.disable
```

My `Undo Command` essentially does the reverse of this, disabling the virtual display and re-enabling the physical displays.

### Host Operating System

Linux

### Operating System Version

https://github.com/ublue-os/bazzite/releases/tag/43.20251231.1

### Architecture

amd64/x86_64

### Sunshine commit or version

Sunshine version: 2025.1230.11628 commit: 2e68762e3659033f455a129405046995f4e3303a

### Package

Linux - Fedora Copr

### GPU Type

AMD

### GPU Model

AMD RX 9070 XT and AMD Ryzen 7 9800X3D

### GPU Driver/Mesa Version

Mesa Gallium driver 25.3.1

### Capture Method

None

### Config

```Shell
adapter_name = /dev/dri/renderD128
origin_web_ui_allowed = pc
```

### Apps

```json
{
    "apps": [
        {
            "auto-detach": true,
            "exclude-global-prep-cmd": false,
            "exit-timeout": 5,
            "image-path": "desktop.png",
            "name": "Desktop",
            "prep-cmd": [
                {
                    "do": "/home/james/bazzite-scripts/display-modes/sunshine.sh",
                    "undo": "/home/james/bazzite-scripts/display-modes/default.sh"
                }
            ],
            "wait-all": true
        },
        {
            "auto-detach": true,
            "detached": [
                "setsid steam steam://open/bigpicture"
            ],
            "exclude-global-prep-cmd": false,
            "exit-timeout": 5,
            "image-path": "steam.png",
            "name": "Steam Big Picture",
            "prep-cmd": [
                {
                    "do": "",
                    "undo": "setsid steam steam://close/bigpicture"
                },
                {
                    "do": "/home/james/bazzite-scripts/display-modes/sunshine.sh",
                    "undo": "/home/james/bazzite-scripts/display-modes/default.sh"
                }
            ],
            "wait-all": true
        }
    ],
    "env": {
        "PATH": "$(PATH):$(HOME)/.local/bin"
    }
}
```

### Relevant log output

```shell
[2026-01-01 15:47:50.599]: Info: Sunshine version: 2025.1230.11628 commit: 2e68762e3659033f455a129405046995f4e3303a
[2026-01-01 15:47:50.599]: Info: Package Publisher: LizardByte
[2026-01-01 15:47:50.599]: Info: Publisher Website: https://app.lizardbyte.dev
[2026-01-01 15:47:50.599]: Info: Get support: https://app.lizardbyte.dev/support
[2026-01-01 15:47:50.599]: Info: config: 'adapter_name' = /dev/dri/renderD128
[2026-01-01 15:47:50.599]: Info: config: 'origin_web_ui_allowed' = pc
[2026-01-01 15:47:50.599]: Error: Couldn't load cuda: -1
[2026-01-01 15:47:50.599]: Info: Found display [wayland-0]
[2026-01-01 15:47:50.600]: Info: Found interface: zxdg_output_manager_v1(31) version 3
[2026-01-01 15:47:50.600]: Info: Found interface: zwp_linux_dmabuf_v1(58) version 5
[2026-01-01 15:47:50.600]: Info: Found interface: wl_output(98) version 4
[2026-01-01 15:47:50.600]: Info: Found interface: wl_output(100) version 4
[2026-01-01 15:47:50.600]: Info: Found interface: wl_output(101) version 4
[2026-01-01 15:47:50.600]: Info: Found interface: wl_output(109) version 4
[2026-01-01 15:47:50.600]: Warning: Missing Wayland wire for wlr-export-dmabuf
[2026-01-01 15:47:50.600]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:50.601]: Info: /dev/dri/card1 -> amdgpu
[2026-01-01 15:47:50.601]: Info: Found display [wayland-0]
[2026-01-01 15:47:50.601]: Info: Found display [wayland-0]
[2026-01-01 15:47:50.601]: Info: Found interface: zxdg_output_manager_v1(31) version 3
[2026-01-01 15:47:50.601]: Info: Found interface: zwp_linux_dmabuf_v1(58) version 5
[2026-01-01 15:47:50.601]: Info: Found interface: wl_output(98) version 4
[2026-01-01 15:47:50.601]: Info: Found interface: wl_output(100) version 4
[2026-01-01 15:47:50.601]: Info: Found interface: wl_output(101) version 4
[2026-01-01 15:47:50.601]: Info: Found interface: wl_output(109) version 4
[2026-01-01 15:47:50.601]: Info: Resolution: 1920x1080
[2026-01-01 15:47:50.601]: Info: Resolution: 2560x1440
[2026-01-01 15:47:50.601]: Info: Resolution: 3840x2160
[2026-01-01 15:47:50.601]: Info: Resolution: 2560x1440
[2026-01-01 15:47:50.601]: Info: Offset: 0x240
[2026-01-01 15:47:50.601]: Info: Logical size: 1080x1920
[2026-01-01 15:47:50.601]: Info: Name: DP-2
[2026-01-01 15:47:50.601]: Info: Found monitor: HP Inc. HP E243
[2026-01-01 15:47:50.601]: Info: Offset: 1080x431
[2026-01-01 15:47:50.601]: Info: Logical size: 2560x1440
[2026-01-01 15:47:50.601]: Info: Name: DP-1
[2026-01-01 15:47:50.601]: Info: Found monitor: GIGA-BYTE TECHNOLOGY CO., LTD. G27Q
[2026-01-01 15:47:50.601]: Info: Offset: 6200x0
[2026-01-01 15:47:50.601]: Info: Logical size: 3840x2160
[2026-01-01 15:47:50.601]: Info: Name: HDMI-A-1
[2026-01-01 15:47:50.601]: Info: Found monitor: LG Electronics LG TV SSCR2
[2026-01-01 15:47:50.601]: Info: Offset: 3640x431
[2026-01-01 15:47:50.601]: Info: Logical size: 2560x1440
[2026-01-01 15:47:50.601]: Info: Name: HDMI-A-2
[2026-01-01 15:47:50.601]: Info: Found monitor: GIGA-BYTE TECHNOLOGY CO., LTD. G27Q
[2026-01-01 15:47:50.601]: Info: -------- Start of KMS monitor list --------
[2026-01-01 15:47:50.601]: Warning: Mismatch on expected Resolution compared to actual resolution: 0x0 vs 2560x1440
[2026-01-01 15:47:50.601]: Info: Monitor 0 is DP-1: GIGA-BYTE TECHNOLOGY CO., LTD. G27Q
[2026-01-01 15:47:50.601]: Warning: Mismatch on expected Resolution compared to actual resolution: 2560x1440 vs 3840x2160
[2026-01-01 15:47:50.601]: Info: Monitor 0 is HDMI-A-1: LG Electronics LG TV SSCR2
[2026-01-01 15:47:50.601]: Warning: Mismatch on expected Resolution compared to actual resolution: 3840x2160 vs 2560x1440
[2026-01-01 15:47:50.601]: Info: Monitor 1 is HDMI-A-2: GIGA-BYTE TECHNOLOGY CO., LTD. G27Q
[2026-01-01 15:47:50.601]: Info: --------- End of KMS monitor list ---------
[2026-01-01 15:47:50.672]: Info: // Testing for available encoders, this may generate errors. You can safely ignore those errors. //
[2026-01-01 15:47:50.672]: Info: Trying encoder [nvenc]
[2026-01-01 15:47:50.672]: Info: Screencasting with KMS
[2026-01-01 15:47:50.672]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:50.673]: Info: /dev/dri/card1 -> amdgpu
[2026-01-01 15:47:50.673]: Error: Couldn't find monitor [0]
[2026-01-01 15:47:50.673]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:50.673]: Info: /dev/dri/card1 -> amdgpu
[2026-01-01 15:47:50.673]: Error: Couldn't find monitor [0]
[2026-01-01 15:47:50.873]: Info: Screencasting with KMS
[2026-01-01 15:47:50.873]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:50.874]: Info: /dev/dri/card1 -> amdgpu
[2026-01-01 15:47:50.874]: Error: Couldn't find monitor [0]
[2026-01-01 15:47:50.874]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:50.874]: Info: /dev/dri/card1 -> amdgpu
[2026-01-01 15:47:50.874]: Error: Couldn't find monitor [0]
[2026-01-01 15:47:51.075]: Info: Encoder [nvenc] failed
[2026-01-01 15:47:51.075]: Info: Trying encoder [vaapi]
[2026-01-01 15:47:51.075]: Info: Screencasting with KMS
[2026-01-01 15:47:51.075]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:51.075]: Info: Found monitor for DRM screencasting
[2026-01-01 15:47:51.075]: Info: Found connector ID [108]
[2026-01-01 15:47:51.075]: Info: Found cursor plane [91]
[2026-01-01 15:47:51.095]: Info: Creating encoder [h264_vaapi]
[2026-01-01 15:47:51.095]: Info: Color coding: SDR (Rec. 601)
[2026-01-01 15:47:51.095]: Info: Color depth: 8-bit
[2026-01-01 15:47:51.095]: Info: Color range: JPEG
[2026-01-01 15:47:51.108]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
[2026-01-01 15:47:51.109]: Info: Streaming bitrate is 1000000
[2026-01-01 15:47:51.109]: Info: Using normal encoding mode
[2026-01-01 15:47:51.109]: Info: Using default rate control
[2026-01-01 15:47:51.144]: Info: Creating encoder [hevc_vaapi]
[2026-01-01 15:47:51.144]: Info: Color coding: SDR (Rec. 601)
[2026-01-01 15:47:51.144]: Info: Color depth: 8-bit
[2026-01-01 15:47:51.144]: Info: Color range: JPEG
[2026-01-01 15:47:51.157]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
[2026-01-01 15:47:51.157]: Info: Streaming bitrate is 1000000
[2026-01-01 15:47:51.157]: Info: Using normal encoding mode
[2026-01-01 15:47:51.157]: Info: Using default rate control
[2026-01-01 15:47:51.201]: Info: Creating encoder [av1_vaapi]
[2026-01-01 15:47:51.201]: Info: Color coding: SDR (Rec. 601)
[2026-01-01 15:47:51.201]: Info: Color depth: 8-bit
[2026-01-01 15:47:51.201]: Info: Color range: JPEG
[2026-01-01 15:47:51.213]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
[2026-01-01 15:47:51.213]: Info: Streaming bitrate is 1000000
[2026-01-01 15:47:51.213]: Error: [av1_vaapi @ 0xce49100] No usable encoding entrypoint found for profile VAProfileAV1Profile0 (32).
[2026-01-01 15:47:51.216]: Error: Could not open codec [av1_vaapi]: Function not implemented
[2026-01-01 15:47:51.236]: Info: Screencasting with KMS
[2026-01-01 15:47:51.237]: Info: /dev/dri/card2 -> amdgpu
[2026-01-01 15:47:51.237]: Info: Found monitor for DRM screencasting
[2026-01-01 15:47:51.237]: Info: Found connector ID [108]
[2026-01-01 15:47:51.237]: Info: Found cursor plane [91]
[2026-01-01 15:47:51.253]: Info: Creating encoder [hevc_vaapi]
[2026-01-01 15:47:51.253]: Info: Color coding: SDR (Rec. 709)
[2026-01-01 15:47:51.253]: Info: Color depth: 10-bit
[2026-01-01 15:47:51.253]: Info: Color range: JPEG
[2026-01-01 15:47:51.266]: Info: vaapi vendor: Mesa Gallium driver 25.3.1 for AMD Ryzen 7 9800X3D 8-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.7, DRM 3.64, 6.17.7-ba22.fc43.x86_64)
[2026-01-01 15:47:51.266]: Info: Streaming bitrate is 1000000
[2026-01-01 15:47:51.266]: Info: Using normal encoding mode
[2026-01-01 15:47:51.266]: Info: Using default rate control
[2026-01-01 15:47:51.299]: Info: 
[2026-01-01 15:47:51.299]: Info: // Ignore any errors mentioned above, they are not relevant. //
[2026-01-01 15:47:51.299]: Info: 
[2026-01-01 15:47:51.299]: Info: Found H.264 encoder: h264_vaapi [vaapi]
[2026-01-01 15:47:51.299]: Info: Found HEVC encoder: hevc_vaapi [vaapi]
[2026-01-01 15:47:51.300]: Info: Starting system tray
[2026-01-01 15:47:51.301]: Info: Adding avahi service bazzite
[2026-01-01 15:47:51.302]: Info: Configuration UI available at [https://localhost:47990]
[2026-01-01 15:47:51.364]: Info: System tray created
[2026-01-01 15:47:51.364]: Info: Starting main loop
[2026-01-01 15:47:52.206]: Info: Avahi service bazzite successfully established.
```

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Uh oh!

Uh oh!

VA-API not using the GPU renderer set in `adapter_name` config #4555

Is there an existing issue for this?

Is your issue described in the documentation?

Is your issue present in the latest beta/pre-release?

Describe the Bug

GPU rendering devices

vainfo `/dev/dri/renderD128`

vainfo `/dev/dri/renderD129`

Expected Behavior

Additional Context

Host Operating System

Operating System Version

Architecture

Sunshine commit or version

Package

GPU Type

GPU Model

GPU Driver/Mesa Version

Capture Method

Config

Apps

Relevant log output

Metadata

Assignees

Labels

Type

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Development

Uh oh!

VA-API not using the GPU renderer set in adapter_name config #4555

Description

Is there an existing issue for this?

Is your issue described in the documentation?

Is your issue present in the latest beta/pre-release?

Describe the Bug

GPU rendering devices

vainfo /dev/dri/renderD128

vainfo /dev/dri/renderD129

Expected Behavior

Additional Context

Host Operating System

Operating System Version

Architecture

Sunshine commit or version

Package

GPU Type

GPU Model

GPU Driver/Mesa Version

Capture Method

Config

Apps

Relevant log output

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

VA-API not using the GPU renderer set in `adapter_name` config #4555

vainfo `/dev/dri/renderD128`

vainfo `/dev/dri/renderD129`