Hardware/Software:
• Steam client version: 1783717985
• SteamOS version: 3.8.22
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes
• Steam Deck model: LCD 256gb
• Dock: JSAUX Upgraded Docking Station 4K@120Hz
• Adapters: Wonlyus HDMI to RCA and BENFEI HDMI to VGA
• Controller: 8BitDo Ultimate 2C Wireless and DualShock 4
• Display: Sony KV-21FS140 and ViewSonic E70
• Reproducible: 100% with the above setup
Expected Behavior:
External controller should consistently control Steam UI elements (Quick Access, overlay, menus) when docked, regardless of display type.
Actual Behavior:
Controller input for SteamOS UI is lost/blocked only while video output is active on CRT/adapter setups. In-game input remains unaffected.
Description / Steps to Reproduce:
1. Dock Steam Deck and connect to external CRT monitor/TV using VGA or composite adapter (not direct HDMI).
2. Pair an external controller (tested with both 2.4GHz wireless and Bluetooth).
3. Launch a game in Gaming Mode.
4. In-game: Controller fully works for gameplay.
5. Press Steam button (or equivalent Home/Guide + A): Steam Quick Access menu and Steam overlay appear but do not respond to the external controller. (Deck's built-in controls or keyboard may still work.)
6. Disconnect the external display (or switch to Deck screen): External controller immediately regains full control of Steam menus.
7. Same behavior occurs on any non-HDMI legacy display (via dock + adapter). Direct HDMI monitors work normally. Other modern monitors have no issue.
Additional Info:
• Issue is independent of controller wireless protocol (Bluetooth + 2.4GHz both affected).
• No issues when using the same controller + direct HDMI.
• Controller order re-arrangement and External Display Safe Mode were tested but did not resolve.
Workaround(s) that partially help:
• Use direct HDMI instead of adapter.
• Disconnect external display to regain UI control
Hardware/Software:
• Steam client version: 1783717985
• SteamOS version: 3.8.22
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes
• Steam Deck model: LCD 256gb
• Dock: JSAUX Upgraded Docking Station 4K@120Hz
• Adapters: Wonlyus HDMI to RCA and BENFEI HDMI to VGA
• Controller: 8BitDo Ultimate 2C Wireless and DualShock 4
• Display: Sony KV-21FS140 and ViewSonic E70
• Reproducible: 100% with the above setup
Expected Behavior:
External controller should consistently control Steam UI elements (Quick Access, overlay, menus) when docked, regardless of display type.
Actual Behavior:
Controller input for SteamOS UI is lost/blocked only while video output is active on CRT/adapter setups. In-game input remains unaffected.
Description / Steps to Reproduce:
1. Dock Steam Deck and connect to external CRT monitor/TV using VGA or composite adapter (not direct HDMI).
2. Pair an external controller (tested with both 2.4GHz wireless and Bluetooth).
3. Launch a game in Gaming Mode.
4. In-game: Controller fully works for gameplay.
5. Press Steam button (or equivalent Home/Guide + A): Steam Quick Access menu and Steam overlay appear but do not respond to the external controller. (Deck's built-in controls or keyboard may still work.)
6. Disconnect the external display (or switch to Deck screen): External controller immediately regains full control of Steam menus.
7. Same behavior occurs on any non-HDMI legacy display (via dock + adapter). Direct HDMI monitors work normally. Other modern monitors have no issue.
Additional Info:
• Issue is independent of controller wireless protocol (Bluetooth + 2.4GHz both affected).
• No issues when using the same controller + direct HDMI.
• Controller order re-arrangement and External Display Safe Mode were tested but did not resolve.
Workaround(s) that partially help:
• Use direct HDMI instead of adapter.
• Disconnect external display to regain UI control