I have no clue what's causing this to happen, Steam was fine yesterday and now it has this error, some other apps might not work but to my knowledge one of them is the Dolphin Emulator (not the file explorer I mean the Gamecube/Wii Emulator) I'll share the steam.sh output below
steam.sh[6483]: Running Steam on fedora 44 64-bit
steam.sh[6483]: STEAM_RUNTIME is enabled automatically
setup.sh[6519]: Steam runtime environment up-to-date!
steam.sh[6483]: Steam client's requirements are satisfied
CProcessEnvironmentManager is ready, 5 preallocated environment variables.
[2026-10-11 09:46:08] Startup - updater built Sep 3 2026 01:31:48
[2026-10-11 09:46:08] Startup - Steam Client launched with: '/home/Dominick/.local/share/Steam/ubuntu12_32/steam' '-s
rt-logger-opened'
10/11 09:46:08 minidumps folder is set to /tmp/dumps
10/11 09:46:08 Init: Installing breakpad exception handler for appid(steam)/version(1788652215)/tid(6577)
Looks like steam didn't shutdown cleanly, scheduling immediate update check
CProcessEnvironmentManager is ready, 5 preallocated environment variables.
[2026-10-11 09:46:08] Process started with command-line: '/home/Dominick/.local/share/Steam/ubuntu12_32/steam' '-chil
d-update-ui' '-child-update-ui-socket' '8' '-srt-logger-opened'
10/11 09:46:08 minidumps folder is set to /tmp/dumps
[2026-10-11 09:46:08] Using update UI: console
10/11 09:46:08 Init: Installing breakpad exception handler for appid(steam)/version(0)/tid(6578)
[2026-10-11 09:46:08] Create window
[2026-10-11 09:46:08] Loading cached metrics from disk (/home/Dominick/.local/share/Steam/package/steam_client_metric
s.bin)
[2026-10-11 09:46:08] Using the following download hosts for Public, Realm steamglobal
[2026-10-11 09:46:08] 1. https://client-update.fastly.steamstatic.com, /, Realm 'steamglobal', weight was 900, source
= 'update_hosts_cached.vdf'
[2026-10-11 09:46:08] 2. https://client-update.akamai.steamstatic.com, /, Realm 'steamglobal', weight was 400, source
= 'update_hosts_cached.vdf'
[2026-10-11 09:46:08] 3. https://client-update.steamstatic.com, /, Realm 'steamglobal', weight was 1, source = 'baked
in'
[2026-10-11 09:46:08] Checking for update on startup
[2026-10-11 09:46:08] Checking for available updates...
[2026-10-11 09:46:08] Downloading manifest: https://client-update.fastly.steamstatic.com/steam_client_ubuntu12
[2026-10-11 09:46:08] Manifest download: send request
[2026-10-11 09:46:08] Set percent complete: 0
[2026-10-11 09:46:08] Set status message: Checking for available updates...
[ 0%] Checking for available updates...
[2026-10-11 09:46:08] Set percent complete: -1
[2026-10-11 09:46:09] Manifest download: waiting for download to finish
[2026-10-11 09:46:09] Manifest download: finished
[2026-10-11 09:46:09] Download skipped: /steam_client_ubuntu12 version 1788652215, installed version 1788652215, exis
ting pending version 0
[2026-10-11 09:46:09] Nothing to do
[2026-10-11 09:46:09] Verifying installation...
[2026-10-11 09:46:09] Verifying all executable checksums
[2026-10-11 09:46:09] Set percent complete: -1
[2026-10-11 09:46:09] Set status message: Verifying installation...
[----] Verifying installation...
[2026-10-11 09:46:10] Verification complete
UpdateUI: skip show logo
[2026-10-11 09:46:10] Destroy window
[2026-10-11 09:46:10] ProcessNextMessage: socket disconnected
[2026-10-11 09:46:10] No more messages are expected - exiting
Steam logging initialized: directory: /home/Dominick/.local/share/Steam/logs
Unable to open X11 display, exiting
Unable to open X11 display, exiting
Edit: I tried the flatpak version and got this as well
The unofficial Steam Flatpak app requires a correctly-configured desktop
session, which must provide the DISPLAY environment variable to the
D-Bus session bus activation environment.
On systems that use systemd --user, the DISPLAY environment variable must
also be present in the systemd --user activation environment.
This is usually achieved by running:
dbus-update-activation-environment DISPLAY
during desktop environment startup.