I recently acquired the referenced Intel mini PC. I added 8 GB of RAM and a 128 GB SSD and installed Ubuntu Mate 18.04. Works great except that if I suspend the computer it seems to be suspended - power light flashes on/off slowly. However, it will not wake up. Normally I can do this by tapping a key or the power button. I have also tried Ubuntu Mate 20.04 and CentOS 8. Same issue so it appears to be a hardware issue. Searching found some older info about other NUC models with instructions about making changes in BIOS. I do not find the referenced BIOS settings on this NUC but I have tweaked similar settings. No luck.

Does anyone have any (successful) experience enabling suspend on a recent, low end NUC?

TIA,

Ken

I think of using suspend or hibernation mode to save time it took to boot a machine (before NVME or SSDs).

Now, since you did upgrade your machine with SSD, how long does it take to get to DE login after you press power button?

I completely stopped using suspend/hibernation since about 4-years. Boot times (with full disk encryption - requirement for me) is about 10-seconds. So, for me it is just easier to power the machine off when I am done at the end of the day.

You may have different requirement, if not, worth a thought.

As for why the issue, I am wondering if latest BIOS may help you?

Thanks dc.901,

It is not a matter of boot time. Rather I wish to bring the system to the state in which I left it. On my main CentOS 7 workstation I have at all times two and often more VMs running, many workspaces with different programs running etc. I routinely suspend it when I am not actively using it as it draws considerable power.

At the moment I am using the NUC to dabble with C++. I have a tutorial playing on the left monitor along with various reference web sites, notes etc. on different workspaces. The IDE is set to display always on the visible workspace and is parked on the right monitor. Bootup does not take long. Getting everything else setup again is a pain. Fortunately the NUC does not take too much electricity.

I did upgrade to the latest BIOS, no improvement.

Ken

p.s. I re-read your post and noticed the comment about whole disk encryption. I have that on my CentOS 7 workstation. It is rather bizarre as I also have an nVidia k620 graphics card and Intel video build into the CPU. I cannot kill the Intel graphics. When it boots and at about the time the nVidia driver loads the Intel graphics card tries to display "Please enter the password..." The screen goes black and I have to guess that it is wanting the passphrase. If I hose that up the "wrong password" message is displayed via the Intel GPU which is no longer taking to the monitor. I watch the drive light and if it flickers and flashes I know that the boot process is continuing. If not I assume I made an error and type the passphrase again. I generally only shut down the workstation for a monthly OS snapshot or when I install a new kernel.