2024-07-02 14:43:50 +02:00
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## Environment variables
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Unless specified otherwise, a variable is enabled if and only if it's set to `1`
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### DRM
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2024-09-06 20:14:30 +02:00
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### DRM Devices and Settings
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`AQ_DRM_DEVICES` -> This option allows you to set a specific list of DRM devices (GPUs) for the system to use.
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The list is separated by colons (:), and the first device listed will be the primary GPU.
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For example: `/dev/dri/card1:/dev/dri/card0`.
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This means the system will primarily use `card1` and then fall back to `card0` if needed.
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`AQ_NO_ATOMIC` -> Disables atomic mode setting for the DRM.
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Atomic mode setting is a feature that makes screen updates more reliable by grouping changes together.
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Setting AQ_NO_ATOMIC to 1 can be useful on hardware or drivers that don’t fully support atomic mode setting,
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as it can prevent crashes or freezes caused by incomplete or incorrect atomic updates.
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`AQ_MGPU_NO_EXPLICIT` -> Disables explicit synchronization between buffers when using multiple GPUs (multi-GPU setups).
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Without explicit syncing, the system handles buffer transfers between GPUs more automatically,
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which can improve performance in some cases but might introduce errors in more complex setups.
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`AQ_NO_MODIFIERS` -> Disables DRM modifiers for buffers.
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This can also resolve issues where a monitor fails to turn on or is not detected properly.
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DRM modifiers define how pixel data is stored in memory (e.g., in optimized formats).
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Setting `AQ_NO_MODIFIERS` to `1` ensures simpler buffer handling,
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which might be necessary on hardware that doesn’t support advanced memory layouts,
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especially for high resolutions like 4K.
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2024-07-02 14:43:50 +02:00
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### Debugging
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`AQ_TRACE` -> Enables trace (very verbose) logging
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