Gaming on 26.04 — Special Feature

Ubuntu 26.04 brings significant improvements to gaming performance. This article covers the key improvements in the 26.04 release, performance optimizations, and real-world gaming experience.

Kernel & Driver Upgrades

Ubuntu 26.04 ships with the Linux 7.0 kernel, bringing several improvements critical for gaming.

NTSYNC: Windows Synchronization Primitive Acceleration

NTSYNC is one of the most anticipated gaming-related improvements in Ubuntu 26.04. It natively implements Windows NT synchronization primitives (mutexes, semaphores, events, etc.) in the Linux kernel, eliminating the need for Wine/Proton to emulate these mechanisms in user space.

NTSYNC Advantages

Reduced CPU overhead: Synchronization operations complete directly in the kernel, reducing context switches
Lower latency: Eliminates Wine-level synchronization emulation overhead
Improved multi-threaded game performance: Games with heavy multi-threading benefit the most
Replaces Esync/Fsync: NTSYNC is the official kernel-level replacement for Esync and Fsync

Checking if NTSYNC Is Enabled


# Check if the kernel supports NTSYNC
ls /dev/ntsync
# Or check the kernel config (Ubuntu stores it under /boot)
grep NTSYNC /boot/config-$(uname -r)

Enabling NTSYNC in Steam

The latest versions of Proton and Proton-GE automatically detect and use NTSYNC. Make sure your Proton version is recent enough:


# In game launch options (usually not needed manually)
PROTON_ENABLE_NTSYNC=1 %command%

Scheduler Improvements

Linux 7.0 continues to improve desktop responsiveness, graphics hardware support, and scheduling behavior, helping deliver smoother frame rates and lower input latency.

Graphics Driver Stack Improvements

Latest Mesa Version

Ubuntu 26.04 ships with the latest Mesa. AMD and Intel users benefit from:


# Check Mesa version
glxinfo | grep "OpenGL version"
 
# Check Vulkan driver version
vulkaninfo --summary

RADV (AMD Vulkan): Improved ray tracing performance, optimized shader compilation
ANV (Intel Vulkan): More mature Arc GPU support
Zink (OpenGL on Vulkan): Continued compatibility and performance improvements

NVIDIA Drivers


# Install the latest NVIDIA driver
sudo ubuntu-drivers autoinstall
nvidia-smi

Recent NVIDIA proprietary drivers have significantly improved the gaming experience under Wayland; use ubuntu-drivers devices to choose the recommended version for your hardware.

Performance Optimization Configuration

GameMode

GameMode is a gaming performance optimization tool developed by Feral Interactive:


sudo apt install gamemode -y

When activated, GameMode automatically:

Sets the CPU governor to performance mode
Adjusts I/O priority
Optimizes GPU performance state
Tunes kernel scheduling parameters

Use it in Steam game launch options:


gamemoderun %command%

GameMode configuration (~/.config/gamemode.ini):


[general]
renice = 10
softrealtime = auto
inhibit_screensaver = 1
 
[gpu]
apply_gpu_optimisations = accept-responsibility
gpu_device = 0
nv_powermizer_mode = 1
 
[custom]
start = notify-send "GameMode activated"
end = notify-send "GameMode deactivated"

MangoHud Performance Monitoring


sudo apt install mangohud -y

Display detailed performance information during gameplay:


# Steam launch options
mangohud %command%
 
# Combined with GameMode
gamemoderun mangohud %command%

MangoHud configuration (~/.config/MangoHud/MangoHud.conf):


fps
gpu_stats
gpu_temp
cpu_stats
cpu_temp
ram
vram
frame_timing
font_size=20
position=top-left

GameScope Window Compositor

GameScope is a micro-compositor developed by Valve that provides an isolated display environment for games:


sudo apt install gamescope -y
 
# Use in Steam launch options
gamescope -w 1920 -h 1080 -r 60 -f -- %command%
 
# Common parameters
# -w  output width
# -h  output height
# -r  refresh rate limit
# -f  fullscreen
# -F fsr  enable FSR upscaling
# --force-grab-cursor  lock mouse cursor

Performance Benchmarking

Installing Test Tools


# Vulkan benchmark
sudo apt install vkmark -y
 
# OpenGL benchmark
sudo apt install glmark2 -y
 
# Unigine benchmark
# Download from https://benchmark.unigine.com/
 
# Phoronix Test Suite
sudo apt install phoronix-test-suite -y

Running Benchmarks


# OpenGL test
glmark2
 
# Vulkan test
vkmark
 
# Phoronix gaming benchmarks
phoronix-test-suite benchmark unigine-heaven
phoronix-test-suite benchmark rise-of-the-tomb-raider

26.04 vs. Previous Version Performance Comparison

Typical performance improvements in Ubuntu 26.04 compared to 24.04 for gaming scenarios:

Test Area	Improvement	Reason
Multi-threaded game FPS	5-15%	NTSYNC kernel synchronization
Shader compilation stutters	Noticeably reduced	Mesa/RADV optimization
Game launch time	10-20% faster	Proton optimization
Input latency	Reduced	Scheduler improvements
Vulkan game performance	3-8%	Driver optimization

System-Level Gaming Optimization

Adjusting Swappiness

Reducing swap usage can decrease stuttering during gaming:


# View current value
cat /proc/sys/vm/swappiness
 
# Temporary adjustment (resets on reboot)
sudo sysctl vm.swappiness=10
 
# Permanent adjustment
echo "vm.swappiness=10" | sudo tee -a /etc/sysctl.d/99-gaming.conf
sudo sysctl --system

Adjusting File Descriptor Limits

Some games require a large number of file descriptors:


# View current limit
ulimit -n
 
# Adjust limit
echo "* soft nofile 1048576" | sudo tee -a /etc/security/limits.conf
echo "* hard nofile 1048576" | sudo tee -a /etc/security/limits.conf

Disabling Unnecessary Background Services


# Disable indexing service during gaming (in GNOME 47+ tracker was renamed to
# localsearch, and it is a user-level service)
systemctl --user stop localsearch-3.service
systemctl --user mask localsearch-3.service
 
# Disable automatic update checks
sudo systemctl stop unattended-upgrades

CPU Performance Mode


# Install cpupower
sudo apt install linux-tools-common linux-tools-generic -y
 
# Set performance mode
sudo cpupower frequency-set -g performance
 
# Restore power-saving mode
sudo cpupower frequency-set -g powersave

Recommended Gaming Setup

The optimal Ubuntu 26.04 gaming configuration checklist:


# 1. Install the latest drivers
sudo ubuntu-drivers autoinstall
 
# 2. Install gaming tools
sudo apt install gamemode mangohud gamescope steam -y
 
# 3. Install Vulkan support
sudo apt install vulkan-tools libvulkan1 libvulkan1:i386 -y
 
# 4. Install Proton-GE (via ProtonUp-Qt)
flatpak install flathub net.davidotek.pupgui2 -y
 
# 5. Optimize system parameters
echo "vm.swappiness=10" | sudo tee /etc/sysctl.d/99-gaming.conf
sudo sysctl --system
 
# 6. Universal Steam game launch options
# gamemoderun mangohud %command%

Ubuntu 26.04 is one of the best Linux versions for gaming to date. The addition of NTSYNC marks a new era for Linux gaming compatibility and performance.