doc:appunti:hardware:mini_pc_intel_pentium_j3710
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| doc:appunti:hardware:mini_pc_intel_pentium_j3710 [2026/02/22 18:29] – [Kernel 6.1] niccolo | doc:appunti:hardware:mini_pc_intel_pentium_j3710 [2026/02/22 19:35] (current) – [Pygame] niccolo | ||
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| After the //unbind// you can verify that the directory **/ | After the //unbind// you can verify that the directory **/ | ||
| + | ===== Blanking the Virtual Terminal ===== | ||
| + | |||
| + | When the host is started in frame buffer text console, the **setterm** command can be used to force the screen to go blank: | ||
| + | |||
| + | < | ||
| + | setterm --blank force | ||
| + | setterm --powerdown 0 | ||
| + | </ | ||
| + | |||
| + | The monitor turns off due no signal and remains blank even keys are pressed on the keyboard. | ||
| + | |||
| + | To revive the screen: | ||
| + | |||
| + | < | ||
| + | setterm --blank poke | ||
| + | setterm --powerdown 0 | ||
| + | </ | ||
| + | |||
| + | If the screen is blanked the following command returns **1**: | ||
| + | |||
| + | < | ||
| + | setterm --blank | ||
| + | 1 | ||
| + | </ | ||
| + | |||
| + | ===== Pygame ===== | ||
| + | |||
| + | We verified what driver uses the Pygame app: | ||
| + | |||
| + | <code python> | ||
| + | import pygame | ||
| + | pygame.init() | ||
| + | print(pygame.display.get_driver()) | ||
| + | </ | ||
| + | |||
| + | It says **KMSDRM**. | ||
| + | |||
| + | Using that driver the SDL **Simple DirectMedia Layer** library owns the DRM master, external tools (modetest, sysfs) do not work for blanking the screen. The correct solution is to control this from inside SDL. | ||
doc/appunti/hardware/mini_pc_intel_pentium_j3710.1771781354.txt.gz · Last modified: by niccolo
