ValveSoftware / ValveSoftware/SteamOS

Latest Preview Broke HDMI

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#2,714 14 comments 1 reaction 0 assignees View on GitHub

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Description

I have a custom built “Steam Machine”, Radeon 9070XT, Ryzen 9700X, 32GB DDR5 paired with a ASROCK B650 Lightning Wi-Fi motherboard. I’ve had zero issues until the latest update. HDMI connected every single time, wake up from sleep worked perfectly. I had nothing to complain about, literally everything just worked. Now HDMI connection takes several reboots to even get a picture, once it does it’s just a matter of time before it drops out forcing multiple reboots. I’ve tried multiple cables, different inputs on my LG OLED CX. I even rolled back to stable, nothing works. It all started right after downloading the latest Preview I downloaded on Sunday afternoon.

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First steps

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Research direction

No source file, test, or entry point is named. Start by reproducing the HDMI connection and dropout behavior on the listed hardware after the latest Preview update, then compare with the stable release and review relevant SteamOS display or sleep behavior. Done means identifying and resolving the regression without requiring repeated reboots.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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