@KintaraVault looks like the crashes are due to missing the xtest extension. Can you try installing libxtst?
You can check whether xtest is available by running this command:
% xdpyinfo -queryExtensions | grep XTEST
XTEST (opcode: 132)
@lostgoat libxtst is already installed, but XTEST extension is not available on XWayland (I'm on Wayland). What's the best way to enable it? Also my crash trace seems to be in BYieldingQueryAccountsRegisteredToController - is XTEST causing that, or is this a different crash?
Sorry, I'm not certain what could be causing that extension to be disabled on your system.
On our side, we are planning on releasing a fix for steam crashing when xtest isn't present. But note that without xtest some controller features won't work. Mainly anything that isn't a direct gamepad action, e.g. moving the mouse in the desktop.
Also my crash trace seems to be in BYieldingQueryAccountsRegisteredToController - is XTEST causing that, or is this a different crash?
There is no BYieldingQueryAccountsRegisteredToController function in steam. That is just a log message. If an llm is helping you diagnose this, it is probably hallucinating incorrect info.
Hello @KintaraVault, please give #12714 a read and check if the discussion there is relevant to your system.
@kisak-valve Thanks, that worked
Nothing extracted yet.
Your system information
Steam client version (build number or date): 1783028805 (Jul 3 2026)
Distribution (e.g. Ubuntu): CachyOS (Arch Linux), kernel 7.1.2-3-cachyos
Opted into Steam client beta?: No
Have you checked for system updates?: Yes
Steam Logs: steam-logs.tar.gz
GPU: NVIDIA GeForce RTX 3050 8GB
Please describe your issue in as much detail as possible:
Steam crashes with SIGSEGV when a DualShock 4 controller (054c:09cc) is connected via Bluetooth or USB. The crash happens both on startup (controller already paired) and when hotplugging the controller to a running Steam instance.
The crash is in the CSteamController thread — the controller log shows:
BYieldingQueryAccountsRegisteredToController
BYieldingQueryAccountsRegisteredToController - server unavailable checking local cache for stored values
followed by a null-pointer dereference at
steamclient.so+0x1315229. This is a regression — the same controller and system worked fine before the client update around July 3.Disabling "PlayStation Configuration Support" does NOT prevent the crash. Setting
STEAM_INPUT_DISABLE_HIDAPI=1does NOT help. The crash specifically occurs in the local cache fallback handler ofBYieldingQueryAccountsRegisteredToControllerwhen Steam detects the PS4 controller.Crash IDs (auto-uploaded):
Steps for reproducing this issue: