Install the Snap version , disable hardware acceleration in Slack's settings (to fix the font rendering blur), and force X11 for the app via snap run slack --disable-gpu-sandbox . Yes, that command looks insane. Welcome to Linux desktop productivity.
Slack offers the .deb file on their website, but that’s for casuals. The Ubuntu Software Center version works, but it lags slightly behind. The power move? sudo snap install slack . Yes, the much-maligned Snap actually wins here. It auto-updates (critical for security patches) and sandboxes the app decently. The Flatpak version on Flathub is also solid, though I noticed a 0.5-second slower startup. slack desktop app ubuntu
A Tiling WM Enthusiast & Reluctant Team Chat Survivor Install the Snap version , disable hardware acceleration
sudo apt install python3-psutil cpulimit gnome-shell-extension-appindicator Install the Snap version