Elgato 4K60 Pro MK.2 Linux Driver

High-performance, multi-client Linux driver for the Elgato 4K60 Pro mk.2 PCI-e capture card. Engineered for stability on modern kernels (6.12+). For older kernels, please use the original stoth68000/sc0710 repository.

Kernel Compatibility

Distribution	Kernel Version	Status	Notes
Arch Linux	6.18.7+	Stable	Standard configuration.
Fedora	6.17.12+	Stable	Standard configuration.
Debian	6.12.57+	Stable	Warning: Repository version of OBS may crash. Use Flatpak OBS.

Installation

Automatic Installation (Recommended)

Supported on Arch Linux, Debian/Ubuntu, and Fedora. This script handles dependencies, DKMS compilation, and user permissions.

sudo bash -c "$(curl -fsSL https://raw.githubusercontent.com/Nakildias/sc0710/main/install-sc0710.sh)"

Arch Linux (AUR)

Install sc0710-dkms-git using your preferred helper. Note that the CLI utility is not currently included in the AUR package.

yay -S sc0710-dkms-git

Manual Compilation

For other distributions or development usage.

1. Install Dependencies
   • Arch Linux: sudo pacman -S base-devel linux-headers git dkms
   • Debian/Ubuntu: apt install build-essential linux-headers-$(uname -r) git dkms
   • Fedora/RHEL: dnf install kernel-modules-$(uname -r) kernel-devel kernel-headers gcc make git dkms
2. Build and Load

   git clone https://github.com/Nakildias/sc0710
   cd sc0710
   make
   sudo insmod sc0710.ko

Driver Management (CLI)

The sc0710-cli tool (installed via the automatic script) provides real-time control.

Command	Description
sc0710-cli --status	Show signal format, DKMS status, and module state.
sc0710-cli --load	Load the kernel module.
sc0710-cli --unload	Unload the kernel module (safely checks for usage).
sc0710-cli --restart	Reload the module.
sc0710-cli --debug	Toggle verbose dmesg logging.
sc0710-cli --image-toggle	Toggle between No Signal images and Colorbars.
sc0710-cli --update	Pull latest code and rebuild.
sc0710-cli --remove	Completely uninstall driver and CLI.
sc0710-cli --version	Show installed driver version.
sc0710-cli --help	Show usage information.

Features & capabilities

• Multi-Client Support: Direct access for multiple simultaneous applications (e.g., OBS + Discord).
• DKMS Integration: Automatically rebuilds on kernel updates.
• Status Images: Storage-efficient implementation of "No Signal" / "No Device" screens.
• Connection Sensing: Distinguishes between unplugged cables and signal loss (not 100% reliable).
• Video Formats: Supports 4K60, 1440p144, 1080p240 (requires Windows to change the EDID).
• Hotplug Stability: Implemented. (Close software that uses card when changing resolution otherwise this can cause a Kernel Panic).

Known Limitations / Roadmap

• HDR Tonemapping (On Hold): Requires opaque I2C commands to onboard ARM MCU.
• 10-bit Pixel Format (On Hold): Hardware register map for P010/P016 unknown.
• EDID Switching (On Hold): EEPROM write protocol unknown. (Workaround: Set EDID in Windows first).

Credits

Based on original reverse engineering by Steven Toth (@stoth68000) and subsequent work by @Subtixx.