Half of our displays went offline, showing Ubuntu boot menu

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  • Updated 4 years ago
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I came into work today and 8 of our 16 displays were showing this:

According to my Failure Notification email, it happened at midnight on Friday night (aka Saturday morning). Automatic reboots are set to the default of 3am, so I don't know why that happened.
I cannot see any logical pattern to ones that went offline - they're not all in the same area or anything like that. 
Because they were on this screen, I had to run around with a keyboard to select the operating system. 
Any idea why this would happen, or how to prevent it in the future? I'm not at all familiar with Ubuntu, so it could be something basic. 
Jonathan
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Jonathan Wilson

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Posted 4 years ago

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Jonathan Wilson

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Oh, and these are the Rise Display-provided Intel NUCs! If that makes a difference...
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Neal

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I've heard these can be the result of power outages/improper shut downs.

Going in and selecting the operating system would be the only necessary step to get it back up and running.

Thanks.
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Jonathan Wilson

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I'd love to hear if there's a better solution for this. It's very frustrating if we have to manually touch all these screens after a power blip (and I say 'blip' because I'm not seeing any other evidence of a power outage). 
I really wish it would just auto-select the OS after 30 seconds or so, like Windows does :/
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Neal

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If you open a Terminal window on those Displays, and type sudo gedit /etc/default/grub and follow it up with the password.  Change the Grub timout to be this: GRUB_TIMEOUT=0  Save the changes and next time if it does happen, it should automatically load without waiting for a prompt.

Thanks.
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AdGators AdGators

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Along with Neal's response Jonathan, you should also add this line item into the mix. It will solve the power loss error.

GRUB_RECORDFAIL_TIMEOUT=2

Save the Grub file, then enter the following in terminal:
sudo update-grub

Now if you have a power failure, grub will defaul to 2 seconds before pushing forward with boot.