DBUS

Service

• Bus Name: com.github.opengamingcollective.cardwire
• Object Path: /com/github/opengamingcollective/cardwire
• Interface: com.github.opengamingcollective.cardwire

Methods

SetGpuBlock

Set the block state for a specific GPU. Only available when Mode is set to Manual

The default GPU cannot be blocked

Inputs:

• gpu_id (in): u – The GPU identifier (id field)
• block (in): b – true to block, false to unblock

Outputs: None

ListDevices

List all detected GPU devices

Inputs: None

Outputs:

• (out): a{t(ussuubbbs)}

GPU Struct (ussuubbbs) fields:

• id: u – GPU identifier
• name: s – GPU name
• pci: s – PCI address (e.g. 0000:01:00.0)
• render: u – DRM render node minor number
• card: u – DRM card node minor number
• default: b – Whether this is the default display GPU
• blocked: b – Whether the GPU is currently blocked by the daemon
• nvidia: b – Whether the GPU is an NVIDIA device
• nvidia_minor: s – NVIDIA driver minor number (empty string if not applicable)

ListDevicesPci

List all detected PCI devices

Inputs: None

Outputs:

• (out): a{s(ssssssss)}

PCI Struct (ssssssss) fields:

• pci_address: s – PCI address (e.g. 0000:01:00.0)
• iommu_group: s – IOMMU group number (empty string if none)
• vendor_id: s – PCI vendor ID (empty string if unknown)
• device_id: s – PCI device ID (empty string if unknown)
• vendor_name: s – Vendor name (empty string if unknown)
• device_name: s – Device name (empty string if unknown)
• driver: s – Kernel driver in use (empty string if unknown)
• class: s – PCI class (empty string if unknown)

Properties

Mode

Controls the global GPU blocking mode

• Type: u (uint32)
• Access: Read/Write
• Emits: PropertiesChanged on change

Values:

• 0 – Integrated: Block the dGPU. Requires exactly 2 GPUs
• 1 – Hybrid: Unblock the dGPU. Requires exactly 2 GPUs
• 2 – Manual: Allow per-GPU blocking via SetGpuBlock, applies saved GPU state if auto_apply is enabled