Lemonade Server Documentation: Kernel Requirement for Strix Halo
Official Lemonade documentation identifies a critical kernel bug affecting Strix Halo systems. It explains that missing CWSR properties cause ROCm crashes and specifies the required kernel version for stability.
Source-reported / officially documented. No local benchmark is implied.
The CWSR Kernel Bug
Lemonade documentation states that Strix Halo systems require a kernel fix exporting CWSR properties. Without this, ROCm backends like llamacpp and vllm may crash due to incorrect VGPR counts. The issue affects any ROCm backend on gfx1151 hardware, making the kernel prerequisite universal for these workloads.
Required Kernel Versions
The fix is included in kernel 6.18.4 and later, though it may be backported to older versions. Ubuntu users are advised to install the OEM kernel, while other distributions must upgrade to a compatible version. This documentation does not guarantee performance improvements, only that the specific crash condition is resolved by the kernel update.
Sources & applicability
- Lemonade · official documentation
Original date: Not supplied · Retrieved: 2026-10-03T15:24:12.251031+00:00
Versions: Not specifiedSHA-256 4aa7c049fb46c7d3f4e68dc8b6a752fdce1451537fca3858a090e709b44ed1f4
Immutable revision 66c0f162b7ad2679f80737f58fadb4bcce23b2e5b17f56b511479d6da22accb2