Thanks for the info @Björn I have a couple of initial questions
1) When you say "One of our Dell R630 machines in our CI environment won't boot with the 4.4.0-168.197 kernel in xenial." , does this mean that you have other Dell R360 machines that *do* boot with the new xenial kernels? 2) Can you clarify what you mean by "I also tried installing xenial on the machine, and the same happens with grub. No output in the console after selecting the kernel in the grub menu, it just reboots." ? How is "installing xenial" different from what you were doing prior to that? Is it a matter of booting from a live-usb vs booting from PXE ? If that's the case, do you know what kernel this xenial image was using? Did the live instance come up at all? I think the easiest thing would be to try to bisect to find the offending commit. Attempting to boot the 4.4.0-167.196 kernel is a good idea, to help us know where to start bisection. Thanks -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1852794 Title: Dell PowerEdge R630 won't boot with 4.4.0-168.197 and later Status in linux package in Ubuntu: Confirmed Bug description: One of our Dell R630 machines in our CI environment won't boot with the 4.4.0-168.197 kernel in xenial. I've confirmed that it does boot with 4.4.0-166.195, but it won't boot with neither 4.4.0-168.197 nor 4.4.0-169.198. I haven't tried with 4.4.0-167.196, but I'll see if I can try with that one as well. I can't give any error message. I first saw this when PXE booting the machine. I can see that it downloads the kernel and initrd, but then the machine just reboots. I also tried installing xenial on the machine, and the same happens with grub. No output in the console after selecting the kernel in the grub menu, it just reboots. I'm attaching the lshw outputs for the two Dell machines we have. natasha is the one that isn't working, while opelt works. The machine is in our CI lab, and we can provide you access to it for more debugging. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852794/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
