@tlehrian Ok so you get a BSOD with windows and under linux you get a kernel panic (same but different). So that points to a hardware issue with this computer.

I would swap memory with a known good computer, even if the mem test comes back OK. By moving parts hopefully the problem will move with the hardware.

Move other pcie attached devices like GPUs (if external) or other add in riser cards.

Now that you updated the bios, go in and reset the firmware settings back to factory defaults. In case there was a firmware setting change with the new firmware that corrects a known issue.

Sorry I can only give random ideas, but since this seems to be a hardware issues I can only make logical guesses here.

@george1421 Thanks again for this. I’ll tuck this away for later if I need it.

@tlehrian It would be really great if you could test this fairly soon so we have a little bit of time in case it needs further work. The earlier we know the better! We can’t guarantee a quick fix some time in January when you really need it.

@tlehrian It’s usually good to open new topics on different issues. People will find answers more easily and hopefully be able to help themselves using the forum search. We’ll discuss this other topic here as well but I just want to encourage you to open as many topics as you have issues. There is no limit.

I’m running into another error that Restoring GPT Partition Tables failed (see pic).

We were able to track down an issue that sounds very similar last week. Find the details here: https://forums.fogproject.org/topic/13440/fog-1-5-6-auto-resize-is-unpredictable

To try the fixed binaries download 64 Bit and 32 Bit and put those in /var/www/html/fog/service/ipxe/ dir on your FOG server. Probably good to rename the original ones instead of overwriting.

Ok, back to the initial multicast topic: The log you posted seems fine from my point of view. There is no message saying "This is not the master node.” as you mentioned before.

If you seem to have problems with multicasting I’d advise you to try and not spawn new sessions before you made sure the old one is completely terminated. Take a look at the logs as well as run ps ax | grep 'udp-sender' (make sure you use single quotes here!) to see if some left overs are still running. If so you want to terminate those processes (killall udp-sender).

Edit: Just had another thought on the “This is not the Master Node” message: Please read this: https://github.com/FOGProject/fogproject/issues/268