For a loaded driver without a frame buffer when a window is occluded you can disable video capture since that operation requires physical memory to be allocated to the driver.

Additionally, the act of loading / unloading a bt848 lkm can set/unset a boot flag to allocate memory for the driver so if the user desires to use a frame buffer for vic or fxtv the memory will be available after rebooting. The memory can be released if the driver is not loaded during system startup.

Amancio

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