intel NUC7i7DN dropped out when installing new VM

M

mgdfp

Active Member
Dec 3, 2019
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Hi, I have a Intel NUC7i7DNK2E Dawson Canyon that I have been using as a proxmox host for a few years. I recently moved and now re-installed proxmox on it but to my horror I discovered that it crashed quite regularly. It happened when I had installed a new VM and went through the initial setup. I don't know if it crashed to be honest but it disappeared from the network. I am running it headless down in the basement so I took it up and connected it to a monitor to try to reproduce the problem but as soon as I did that it worked finr. I removed the monitor and soon it dropped out again. I stumbled upon the Technical Product Specification where I found a section under Processor Graphics subsystem called EDID Emulation Modes. I changed that setting to "Headless display emulation" and now it has been running fine without display for almost the whole day. I have installed a few VMs as well without any problems.
I did update BIOS before I re-installed Proxmox so maybe that setting got reverted, I cannot remember if I activated that the first time I set it up.

But, my question is if it is reasonable to assume that my machine will be running smoothly from now on? I am running home assistant on it so it is kind of a bummer if it crashes randomly.

Here is the section from the TPS document:

The board supports emulation of displays so that the system may be remotely accessed in a
headless configuration, or be capable of tolerating display connectivity interruptions without
the operating system redetecting and rearranging the overall display layout. The display
emulation feature may be enabled in BIOS Setup (Advanced → Video → “Display Emulation”
drop down menu), with the following options:
• “No display emulation” (default selection): the system operates normally.
• “Headless display emulation”: provides a virtual display when no displays are connected to
the HDMI ports. The system creates a virtual 1280x1024 display when it boots with no
displays connected.
• “Persistent display emulation”: The purpose of Persistent Display Mode is to "emulate" that
both displays are always connected. Persistent Display Mode prevents the GFX engine from
automatically reassigning the content of a temporarily disconnected display to the
remaining display. When Persistent Display Mode is selected the EC asserts that both HDMI
ports are always connected to a display no matter their actual connection status. The EDID
information from each display will remain programmed through S3, S4, and S5 power
states, until the feature is disabled or a power cycle event (G3 global state) occurs.
Click to expand...
 
Seems like it did the trick. Thanks for all the help guys, I couldn't have done it without you.
 
haha, not a problem. I'm just happy that it works. Maybe this can be helpful to someone else. Should I mark this as solved maybe? Is that possible and how would I go about doing that?
 
mgdfp said:
Should I mark this as solved maybe? Is that possible and how would I go about doing that?
Click to expand...

By editing your initial post and choosing [SOLVED] from the drop-down menu before the thread title.
 
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