Hardware

In my previous post, I ended with a wall: mt7925e 0000:0b:00.0: ASIC revision: 0000 mt7925e 0000:0b:00.0: Message 00000010 (seq 2) timeout mt7925e 0000:0b:00.0: Failed to get patch semaphore mt7925e 0000:0b:00.0: hardware init failed The mt7925e driver bound to the MT7927’s WiFi hardware, but registers returned zeros. The chip sat behind PCIe doing nothing. The ehausig/mt7927 project had gotten firmware into kernel memory but stalled at DMA state 0xffff10f1 - “waiting for firmware transfer.” Nobody had gotten past it. ...

Three devices on my PC have firmware that can only be updated through Windows tools: an ASMedia ASM4242 USB4 controller (ASUS firmware utility), an NZXT Kraken Elite AIO cooler (NZXT CAM), and a Razer Kiyo Pro Ultra webcam (Razer Synapse). Every other component - NVMe SSD, motherboard BIOS, fwupd-supported devices - has a Linux-native update path. These three don’t, and their vendors show no interest in changing that. The obvious answer is “just boot Windows.” But I don’t have a Windows partition, don’t want one, and installing Windows to flash three firmware blobs is absurd. I needed a way to boot a fully configured Windows environment from Linux, run the vendor tools, and shut down. No permanent installation, no dual-boot, no repartitioning. ...

The Intel IPU6 (Imaging Processing Unit, generation 6) is the camera subsystem in Tiger Lake, Alder Lake, Raptor Lake, and Meteor Lake laptops. If you have a recent ThinkPad, XPS, or Surface, your webcam likely runs through it. For years, getting it to work on Linux meant an out-of-tree driver stack from Intel’s GitHub - four separate repositories, a DKMS module, proprietary firmware blobs, and a GStreamer-based relay daemon. It was fragile, broke on kernel updates, and couldn’t survive suspend/resume on recent kernels. ...

Update — March 5, 2026 MT7927 WiFi now fully works on Linux - 2.4/5/6 GHz, WiFi 7 320MHz EHT (~1 Gbps), MLO, AP mode, suspend/resume, and mac_reset recovery. 20 patches, community-tested on 10+ hardware platforms. See the follow-up: MT7927 WiFi on Linux: Making It Work. In my previous post, I documented the 15-month journey to get Bluetooth working on the MediaTek MT7927. The btusb-mt7927-dkms AUR package patched three missing layers - USB device ID, hardware variant support, and firmware extraction - to bring up a fully functional Bluetooth 5.4 adapter. ...

In November 2024, I installed an ASUS ROG Crosshair X870E Hero motherboard - AMD’s flagship X870E platform with a MediaTek MT7927 (Filogic 380) WiFi 7 chip. Running CachyOS, WiFi worked out of the box through the mt7925e driver. Bluetooth did not. What followed was a 15-month journey through kernel source, mailing lists, and community reverse-engineering that ended with a working Bluetooth 5.4 adapter and a published AUR package. This is the story of how it got there. ...