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The issue you’re experiencing with the Colibri VF61 not resuming from sleep mode after executing echo mem > /sys/power/state can be due to several factors:
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Power Management Settings: Ensure that the operating system’s power management settings are configured to allow wake events from peripherals like the mouse and keyboard. Check the BIOS/UEFI settings to ensure that options like wake-on-USB are enabled.
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Wake-Up Sources: Verify that the Colibri VF61 is configured to recognize mouse movements or key presses as wake-up signals. This involves checking the power management settings to ensure that wake-up events are enabled for these inputs.
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Driver Support: Make sure that the drivers for the input devices are properly installed and configured to support wake-up functionality.
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Hardware Limitations: Check for any hardware limitations or configurations that might prevent the Colibri VF61 from waking up using standard input devices. This could involve reviewing GPIO settings or ensuring that necessary hardware components are configured to handle wake events.
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Kernel Configuration: Review the kernel configuration to ensure that the necessary power management options are enabled to allow the system to wake from sleep on input events.
By addressing these areas, you should be able to resolve the issue of the Colibri VF61 not waking up from sleep mode.
Please, also check if these links can help you solve your problem: