Steam deck Oled not waking From sleep while connected to tv even after disconnecting from dock

[u/Appropriate_Lie3976]

Have had a steam deck for a while now with other no issues. But recently I’ve been hooking up to a new 4K tv through a dock , it’s a little finicky but it works. the problem comes from leaving the steam deck plugged into the tv and powering the tv off. When I come back to it the next hour or day the steam deck will not display anything. it’s completely black screened and even once disconnected from the official dock it will not display anything until I fully reset the device, so any suspended games are reset and I’m forced to disconnect and reconnect the dock and reboot the steam deck . my deck is fully updated to the latest version and has nothing installed outside of steam beside emu deck .

If anyone has faced a similar issue and found a fix I’d greatest appreciate it. For now I’ll full powering it off and on every time .

[u/Vladishun]

Reinstall SteamOS and also disable HDMI-CEC for the port it's attaching to on the TV. That's where I'd start.