Kernel Update Required - Lemonade Server

Kernel Update Required
Your kernel has a critical bug affecting Strix Halo (gfx1151) systems

## What's the problem?

Your system has a Strix Halo GPU (gfx1151), but your Linux kernel is missing a critical fix that exports CWSR (Context Wave Save/Restore) properties. Without this fix, ROCm may have incorrect VGPR counts, causing crashes for various workloads.

Technical details:

- Strix Halo optimization guide
- The fix is included in kernel 6.18.4+ but may be backported to older kernels

## How to fix this

For Ubuntu Users Recommended

### Install the OEM Kernel

Ubuntu provides an OEM kernel with the fix included. Open a terminal and run:

`sudo apt update && sudo apt install linux-oem-24.04`

After installation, reboot your system for the new kernel to take effect.

For Other Linux Distributions

### Upgrade to a Kernel with the CWSR Fix

Upgrade your kernel to version 6.18.4 or later, or a kernel with the CWSR fix backported. The fix exports cwsr_size and ctl_stack_size properties to userspace.

1

### Check Current Kernel Version

Open a terminal and run:

`uname -r`
2

### Update Your Kernel

Use your distribution's kernel update process. For example:

- Fedora/RHEL: `sudo dnf update kernel`
- Arch Linux: `sudo pacman -Syu linux`
- openSUSE: `sudo zypper update kernel-default`

3

### Reboot

Reboot your system to load the new kernel:

`sudo reboot`
4

### Verify

After rebooting, verify the CWSR properties are exported:

`grep -E "cwsr_size|ctl_stack_size" /sys/class/kfd/kfd/topology/nodes/*/properties`

You should see both `cwsr_size` and `ctl_stack_size` listed.

## Need Help?

If you continue to experience issues after updating your kernel:

- Check the GitHub Issues page
- Contact us on Discord