Lenovo M720q randomly hangs during headless cold boot/reboot

[shadesh]

I have the same hardware and same problem. Mine is running Manjaro Linux because its my Linux desktop.
I think it makes no difference which OS is installed, because it had this problem also with other OS installed.
Mine also have a display attached all the time, which makes me think it could be a genereal bios or hardware problem.
For me its just a power-off and power-on if it fails to boot and it cames back with 99% success after that.

[userunkn4wn]

I have the same hardware and same problem. Mine is running Manjaro Linux because its my Linux desktop.
I think it makes no difference which OS is installed, because it had this problem also with other OS installed.
Mine also have a display attached all the time, which makes me think it could be a genereal bios or hardware problem.
For me its just a power-off and power-on if it fails to boot and it cames back with 99% success after that.

No, this is not my experience. I just downloaded the latest Ubuntu ISO and tried to boot into the live environment (installer) multiple times without any problems. After plugging in the monitor to check if it worked, the installer was visible a few seconds later.

I don't think these Lenovo mini PCs have a general problem with headless booting, since I see them used all over YouTube for homelab projects.

Does your problem occur every time or, like mine, only occasionally?

Unfortunately, this seems to be an OPNsense bootloader problem, even though I would like to spare the OPNsense maintainers the trouble...

[userunkn4wn]

We need to fix that bug in the boot loader. I am quite a bit disappointed the issue in the tracker has not got any attention. In March a volunteer intending to fix the problem asked for some information - no response so far.

I'll raise some "management attention" in a week ;-)

Kind regards,
Patrick

Hi Patrick,

Thank you so much for bringing this up and pushing for a fix! It's great to know that the issue is being looked into.

Please let me know if I can assist in any way, whether by providing logs or testing a patch/build on my system.

Best regards,
Fabian