● Covered by 1 source · 1 reportLow impact1 neutral
New Open-Source HDMI Driver Released for Specific Silicon Motion SM750 GPU Card
Key points
- New Linux display driver for SE-DP750A-HDMI PCIe card released.
- Supports resolutions up to 2048-wide or software-scaled 2560x1080.
- Compatible with Linux 6.17 and newer kernels.
- Driver is experimental and specific to the SM750G10-AC revision A1 GPU.
Driver Release for Specific SM750 Card
An open-source Linux display driver has been released for the SE-DP750A-HDMI PCIe card. This card is identified by a Silicon Motion SM750G10-AC, revision A1 GPU with PCI ID 126f:0750, a Silicon Image/Lattice SiI9024ACNU HDMI transmitter, 16 MiB display memory, and a single HDMI output. The driver is specifically tailored for this hardware configuration.
Enhanced Display Capabilities
The new driver allows the card to output at 2048-wide resolutions or a software-scaled 2560x1080 ultrawide desktop. It includes bandwidth-saving color conversion and update optimizations designed to provide smoother performance. The driver uses dithered 16-bit RGB565 scanout, a hardware cursor, coalesces updates on a worker, and uploads eight-row batches with DMA.
Kernel Compatibility and Installation
The driver is intended for Linux kernels 6.17 and newer, with compatibility paths for the 6.x series and Linux 7.0 onward. It has been tested against 6.17 and 7.0 Ubuntu kernels. Users of Ubuntu 24.04 and Linux Mint 22 can build a DKMS package locally using provided instructions, which includes blacklisting the older sm750fb driver. While prebuilt packages may be available, local building is recommended.
Experimental Nature and Limitations
This driver is experimental, and optional modes can exceed published GPU or monitor clock limits, potentially leading to no signal, distortion, or an unstable display. Users are advised to have a recovery route available when trying non-EDID modes. The driver is highly specific to the listed hardware and does not currently support other SM750 cards that may use different video outputs, transmitters, or GPIO wiring.
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Primary sources
GitHub cmc_internal/api GitHub github/collect GitHub KodeMunkie/sm750hdmifb GitHub _private/browser GitHub get-started/accessibility GitHub open-source/sponsorsReporting from
A new open-source Linux display driver has been released for the SE-DP750A-HDMI PCIe card, which features a Silicon Motion SM750 GPU. This driver enables higher resolutions and improved performance for this specific hardware, addressing a niche need for users of this particular graphics card.