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Update README.md
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@ -75,3 +75,13 @@ Now you can insert the TF card in to the slot and your HackberryPi will run Retr
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DietPi is an extremely lightweight Debian OS, highly optimised for minimal CPU and RAM resource usage. The instruction is made by [Bjoern Franck](https://github.com/bjoernfranck)
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DietPi is an extremely lightweight Debian OS, highly optimised for minimal CPU and RAM resource usage. The instruction is made by [Bjoern Franck](https://github.com/bjoernfranck)
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You can view the tutorial at this [page](https://github.com/bjoernfranck/HackberryPi/tree/main/DietPi)
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You can view the tutorial at this [page](https://github.com/bjoernfranck/HackberryPi/tree/main/DietPi)
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# Troubleshoot
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You might found your display flickering or flashing like this on the picture. This happens when the display driver is powered but no image signal coming through.
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It can usually happen when you flash a new SD card or wake up from screen blanking.
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The display can recover itsself when you put the device running like 1 hour, but you need to disable screen blanking first.
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Here are steps you need to do to disable screen blanking:
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[On RaspberryPi OS](https://github.com/raspberrypi/documentation/blob/develop/documentation/asciidoc/computers/configuration/screensaver.adoc)
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[On Kali](https://superuser.com/questions/1185747/how-do-i-disable-the-screensaver-lock-in-kali-linux)
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