Additional info in hopes it proves useful. On the hung boots, there is no recorded output to disk unfortunately.
This is what's installed on the machine running 108 nopti: jstanford@www:~$ dpkg -l linux* |grep ii ii linux-base 4.0ubuntu1 all Linux image base package ii linux-firmware 1.157.14 all Firmware for Linux kernel drivers ii linux-generic 4.4.0.109.114 amd64 Complete Generic Linux kernel and headers ii linux-headers-4.4.0-104 4.4.0-104.127 all Header files related to Linux kernel version 4.4.0 ii linux-headers-4.4.0-104-generic 4.4.0-104.127 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP ii linux-headers-4.4.0-108 4.4.0-108.131 all Header files related to Linux kernel version 4.4.0 ii linux-headers-4.4.0-108-generic 4.4.0-108.131 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP ii linux-headers-4.4.0-109 4.4.0-109.132 all Header files related to Linux kernel version 4.4.0 ii linux-headers-4.4.0-109-generic 4.4.0-109.132 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP ii linux-headers-generic 4.4.0.109.114 amd64 Generic Linux kernel headers ii linux-image-4.4.0-104-generic 4.4.0-104.127 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP ii linux-image-4.4.0-108-generic 4.4.0-108.131 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP ii linux-image-4.4.0-109-generic 4.4.0-109.132 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP ii linux-image-extra-4.4.0-104-generic 4.4.0-104.127 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP ii linux-image-extra-4.4.0-108-generic 4.4.0-108.131 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP ii linux-image-extra-4.4.0-109-generic 4.4.0-109.132 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP ii linux-image-generic 4.4.0.109.114 amd64 Generic Linux kernel image ** Attachment added: "VMware Version info" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1742502/+attachment/5034621/+files/vmwareversion.png -- 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/1742502 Title: 108 and 109 kernel hangs Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Overnight I had 2 of 12 16.04 servers brick with the 108 kernel. They also do not work with 109. They work fine with 104. The other 10 worked fine on both 108 and 109. All are hosted on VMWARE. The two broken ones stop at the same place. I was able to go back to the 104 kernel to get them working and pin the kernel version. Just for fun, I set zswap.enabled=0 and they both crashed with kthread starved for jiffies. They are both multi-processor with lots of ram and disk. I have a task from the Ubuntu Kernel team to try this with 'nopti'. I'll report back. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1742502/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

