Having Steam UI scaling issues? You may want to have a look at the Steam Client Beta that was released June 15th and see how you get on. Valve are constantly updating the Beta, and they only just launched a major update with the new Steam Overlay but they're right back to it on the Beta with fresh upgrades and fixes.
For the Linux client here's what they've added:
- Improved scaling for users running gnome.
- Added an env var based override for scaling settings STEAM_FORCE_DESKTOPUI_SCALING=.
- Fixed a rare crash when rendering an invalid texture.
- Fixed a bug that prevented multiple DualShock 4 controllers from being connected at the same time.
So to use the env var, you could just run
STEAM_FORCE_DESKTOPUI_SCALING=1.5 steam and have it bigger. Set it to whatever you want. As example here's how it would normally look on my 1440p monitor:
And then with 1.5 scaling forced:
And then with 2.0 forced scaling:
Seems to work really nicely, and you can set it to exactly what you want. Nice to see Valve put some more attention into this, as it can really help at different resolutions and for people with vision issues.