Linux 6.19: 40% Speed Boost on Old AMD GPUs & Faster Ext4
Linux 6.19: 40% Speed Boost on Old AMD GPUs & Faster Ext4
https://www.omgubuntu.co.uk/2026/02/linux-6-19-kernel-features-amd-performance
Publish Date: 2026-02-08 16:34:00
Source Domain: www.omgubuntu.co.uk
Linus Torvalds has released Linux 6.19, moving legacy AMD Radeon GPUs to the modern amdgpu driver and enabling larger block sizes in ext4 for improved storage performance.
The AMD driver switch brings native Vulkan support to the Radeon R9 290 and HD 7000 series GPUs, while the ext4 filesystem breaks the 4KB page size limit to improve write operations by up to 50%.
Following a one-week delay, this kernel saw an extended eight-week development cycle. As Ubuntu 26.04 LTS will ship with the next kernel release, officially named Linux 7.0, current Ubuntu users can install mainline 6.19 builds via unsupported methods.
Linux 6.19 also introduces HDR colour pipeline support, better hardware compatibility for the Steam Deck and ROG Ally, and filesystem optimisations that go beyond the headline improvements.
Linux 6.19: What’s New?
New life for older AMD Radeon GPUs
Got an old AMD GPU gathering dust in a drawer? Linux 6.19 gives you a reason to dig it out.
Thanks to work by Valve’s Timur Kristóf, this kernel breathes new life into AMD’s “Southern Islands” (GCN 1.0) and “Sea Islands” (GCN 1.1) cards by default to the modern amdgpu driver rather than the legacy radeon driver.
Cards like the AMD Radeon HD 7970, R9 280 and R9 290X gaining native RADV Vulkan support as a result. Under specific OpenGL and Vulkan workloads, benchmarks show a performance boost of up to 40 percent – pretty impressive for 2012-era GPUs in 2026!
Of course, that leap is both comparative and a ‘best-case’ scenario. But enabling older cards to work with modern translation layers like DXVK and Proton does mean that a library of games that didn’t work well on the legacy driver, may now run recently.
New Colour Pipeline API for HDR
Linux 6.19 introduces the DRM Color Pipeline API, which paves the way for hardware-accelerated HDR on the Linux desktop.
This API enables HDR colour transformation to be handled on…
