@Oleg said:
I don’t know if it has to do something with the timeout issue but in /etc/default/grub I added
We don’t use GRUB for PXE booting hosts usually! Seems like you have customized your setup a fair bit. I may ask you to tell us more about the customization to we are able to properly help you!
I changed manually the kernels in /var/www/html/fog/service/ipxe/ to the 4.15.2 Kernel.
With the older kernel the issue with the timeout is gone.
That’s interesting. So it seems like a Linux kernel network driver issue from what we know so far. Let’s start by trying to find out what driver is used. Please boot Windows on that machine, open device management and get us the device ID from there. Usually in the form 12c4:5f78.