Ubuntu Optimization Guide
A Guide to help with Ubuntu optimization (Steam, Gaming, General Performance)
GENERAL FIXES & OPTIMIZATIONS
/etc/gdm3/custom.conf
#WaylandEnable=false
To
WaylandEnable=false
/etc/default/grub
nvidia.NVreg_EnableGpuFirmware=0
/etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="mitigations=off nvidia-drm.modeset=1 ibt=off split_lock_detect=off split_lock_mitigate=0 nokaslr"
GRUB_CMDLINE_LINUX="vdso=0 ignore_rlimit_data sched_migration_cost=512 pci=nommconf preempt=full threadirqs nvidia.NVreg_EnableGpuFirmware=0"
/etc/environment
GSK_RENDERER=cairo
NVIDIA RELATED FIXES
sudo chmod u+x /usr/share/screen-resolution-extra/nvidia-polkit
/etc/X11/Xwrapper.config
Add line
needs_root_rights=yes
before
allowed_users=console
DMESG RELATED PERMISSION
/etc/sysctl.conf
kernel.dmesg_restrict = 0
/etc/sysctl.d/10-kernel-hardening.conf
kernel.dmesg_restrict = 0
STEAM RELATED OPTIMIZATION (SHADER PROCESSING BOOST)
Note that Youtube description does NOT allow me to put the greater than symbol, so please put it after the closing double quote, just before the number 24. Something like
echo "unShaderBackgroundProcessingThreads 24" GREATER THAN SYMBOL GOES HERE ~/.local/share/Steam/steam_dev.cfg
echo "unShaderBackgroundProcessingThreads 24" ~/.local/share/Steam/steam_dev.cfg
24 = Between 25% to 75% of the total threads.
I have 32 so I used 24, but I could have also used 8 or 16.
I used 24 because I was able to test several games (Hogwarts, Dead Space, Etc..)
Avoid putting games on NTFS, FAT32, (Rare cases for XFS), External drive.
Use SSD or NVMe (This mainly affects starting the game, loading savegame, saving, loading scenes)
Latest driver or kernel does NOT mean best performance, it just means you are a Tester of it.
OS: Ubuntu 24.10
Window System - X (Not Wayland)
Steam - DEB Version (Not Snap or Flatpak)
Proton - Proton Experimental
Nvidia Driver - 560
MOBO: Asus Maximus Z790 Hero
VIDEO: Zotac Nvidia RTX 4090 AMP Extreme AIRO
CPU: Intel i9 13900k
RAM: g.skill 128GB Trident Z5 DDR5 4200Mhz
SSD: WD SN850x 2TB
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