# HDMI Blanking

**URL:** <https://community.victronenergy.com/t/hdmi-blanking/15304>\
**Category:** Modifications\
**Tags:** diy\
**Created:** [13 December 2024 19:43 UTC](https://community.victronenergy.com/t/hdmi-blanking/15304 "2024-12-13T19:43:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Wmsmitty](https://avatars.discourse-cdn.com/v4/letter/w/8dc957/32.png) [@Wmsmitty](https://community.victronenergy.com/u/Wmsmitty)\
**Post date:** [13 December 2024 19:43 UTC](https://community.victronenergy.com/t/hdmi-blanking/15304/1 "2024-12-13T19:43:28Z")

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I’m having trouble getting my 7" waveshare (HDMI) to blank. I’ve confirmed that /sys/class/grahpics/fb1/blank works on the command line to blank and unblank the screen. I’ve run RpiDisplaySetup and placed this path the config but it still won’t blank regardless of the “Display time off” setting in Venus. Any idea what I’m missing?

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**Author:** ![kwindrem](https://avatars.discourse-cdn.com/v4/letter/k/e19b73/32.png) [@kwindrem](https://community.victronenergy.com/u/kwindrem)\
**Post date:** [13 December 2024 21:12 UTC](https://community.victronenergy.com/t/hdmi-blanking/15304/2 "2024-12-13T21:12:22Z")

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Nothing comes to mind, sorry.

I have the Raspberry PI 7" display connected to my test system and the default and the text you provicded both work to blank my display.

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**Author:** ![Wmsmitty](https://avatars.discourse-cdn.com/v4/letter/w/8dc957/32.png) [@Wmsmitty](https://community.victronenergy.com/u/Wmsmitty)\
**Post date:** [14 December 2024 15:22 UTC](https://community.victronenergy.com/t/hdmi-blanking/15304/3 "2024-12-14T15:22:08Z")

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Kevin-Firstly thanks for all your great work. The tools you’ve created are awesome. I had hoped you might chime in.  
Do you happen to know what triggers the screen blanking in Venus? It’s obviously functional as i can blank and un-blank from the command line. I just can’t figure out why the “Display off time” under Language and Display has no effect on it.

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**Author:** ![Wmsmitty](https://avatars.discourse-cdn.com/v4/letter/w/8dc957/32.png) [@Wmsmitty](https://community.victronenergy.com/u/Wmsmitty)\
**Post date:** [17 December 2024 19:10 UTC](https://community.victronenergy.com/t/hdmi-blanking/15304/4 "2024-12-17T19:10:17Z")

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I did manage to get it working. While I did verify I had _/sys/class/graphics/fb1/blank_ in the file _/etc/venus/blank\_display\_device_, it just wasn’t working.

I retyped _echo /sys/class/graphics/fb1/blank \> /etc/venus/blank\_display\_device_ and rebooted and it is now working. The HDMI display blanks at the time set in the settings under “Display and Language”

Perhaps I fat fingered that last command the first time and didn’t notice it was incorrect.