Release Notes

Issues and Resolutions
Topics:
• Ubuntu 16.04.3 installation with Hardware-Enablement kernel fails when NUMA is disabled
• Ubuntu 16.04.3 cannot detect NVDIMMs
• PERC 10 and QLogic QL41xxx cards do not support Ubuntu 16.04.3 and earlier versions
• Ubuntu 16.04.3 installer does not recognize the device name of PCIe SSDs
• An error message is displayed during Ubuntu 16.04.3 installation
• ACPI error messages related to IPMI in Ubuntu 16.04 LTS dmesg logs are displayed
• ACPI Error kernel fail to assign BAR registers to PCI device message in Ubuntu 16.04 LTS
Ubuntu 16.04.3 installation with Hardware-
Enablement kernel fails when NUMA is disabled
Description: On the Dell EMC's 14
th
generation of PowerEdge servers with 28 cores multi-socket CPUs and when
NUMA is disabled, the OS installation with Hardware-Enablement kernel fails and displays blank screen.
Applies to: Ubuntu 16.04.3 on Dell EMC's 14
th
generation of PowerEdge servers such as R740, R740xd, R940, R640,
R540, T440, T640, M640, M640p, FC640
Cause: The below patch that maps the CPU to a node is incorrect: x86/acpi: Set persistent cpuid <-
> nodeid mapping when booting (commit -
dc6db24d2476cd09c0ecf2b8d80313539f737a89 )
Solution: Enable NUMA or reduce the number of core to 26 or below.
Ubuntu 16.04.3 cannot detect NVDIMMs
Description:
While installing Ubuntu-16.04.3 through ISO without enabling network, NVDIMMs are not listed as
persistent memory devices.
Applies to: Ubuntu 16.04.3
Cause: By default, the ISO comes with a grub2-common package of version: 2.02~beta2-36ubuntu3.12
which does not have the required NVDIMM enablement in it. This results in OS detecting the NVDIMMs
as normal memory instead of persistent memory.
Solution: Update the grub2-common package to version:2.02~beta2-36ubuntu3.13 or later which have the
NVDIMM enablement patches in them.
PERC 10 and QLogic QL41xxx cards do not support
Ubuntu 16.04.3 and earlier versions
Description:
Ubuntu 16.04.3 and earlier versions do not support the following:
● PERC 10: H740p, H840
● QLogic NICs: QL41264, QL41164, QL41262.
Applies to: Ubuntu 16.04.1, 16.04.2, and 16.04.3
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Issues and Resolutions 5