Ubuntu Server 18.04 LTS for Dell EMC PowerEdge Servers Release Notes April 2020 Rev.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2018 - 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Release summary..........................................................................................................4 Version....................................................................................................................................................................................4 Release date........................................................................................................................................................................
1 Release summary This release contains 4.15 Linux kernel and ifupdown replaced with netplan.io, and the new subiquity installer set as the default ISO image. The Ubuntu Server 18.04 Long Term Support (LTS) is a new LTS version, and the 4.15 kernel LTS line is supported for five years. Topics: • • • Version Release date Priority and recommendations Version Ubuntu Server 18.
2 Compatibility Topics: • • Supported systems Previous versions Supported systems yx4x and yx5x Dell EMC PowerEdge servers. Previous versions Ubuntu 16.04.
3 New and enhanced in this release The following features are added in this release: ● LTS Kernel 4.15 ● ifupdown is replaced with netplan.io NOTE: For more information, see https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes.
4 Important notes The default server ISO image is the General Availability (GA) kernel-Linux 4.15. To download Ubuntu Server installer media and ISO images: 1. Go to https://www.ubuntu.com/download/alternative-downloads. 2. Search for Alternative Ubuntu Server installer, and then click Download the alternate installer. NOTE: By default, Subiquity Server installer download is available and Dell EMC recommends that you use the non-default image.
5 Known issues Topics: • • • • • • • ACPI kernel fails to assign BAR register to PCI device ACPI error messages related to IPMI are displayed in dmesg log Unable to create or modify namespace for NVDIMM Unable to shut down Ubuntu when the graceful shutdown option from iDRAC is selected or when power button is pressed on the server Ubuntu fails to reboot when onboard DVD drives are connected to servers with AMD processor Unable to install Ubuntu 18.04 in software RAID (S140) disks Ubuntu 18.04.
Tracking number 126156, 126157 Unable to create or modify namespace for NVDIMM Description When you create or modify a namespace for NVDIMM, it fails. Workaround Use the "--no-autorelabel" option while creating or modifying the namespace. For example: ● Creating namespace—#ndctl create-namespace -r region0 -m raw -f --noautolabel ● Modifying namespace—#ndctl create-namespace --mode raw -e namespace0.0 -f --no-autolabel Systems affected All yx4x Dell EMC PowerEdge servers that have NVDIMM installed.
Tracking number 102871 Unable to install Ubuntu 18.04 in software RAID (S140) disks Description Ubuntu 18.04 does not install grub on software RAID disks which results in installation failure. Workaround Do not use S140 disks as boot-disks. Instead, use S140 disks as data-disks. Systems affected All yx4x Dell EMC PowerEdge servers Applies to Ubuntu 18.04 Tracking number 105254 Ubuntu 18.04.
6 Limitations Installing GUI on servers is not recommended by Ubuntu. For more information, see https://help.ubuntu.com/community/ ServerGUI. Subiquity server installer lacks some advanced features such as multipath, full-disk encryption, or the ability to reuse existing partitions. Hence, Dell EMC recommends that you use Debian installer image for server environment. To know more about the limitations, see https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes#Ubuntu_Server.
7 Updating Ubuntu For instructions to update Ubuntu 18.04 from Ubuntu 16.04, see https://help.ubuntu.com/community/BionicUpgrades.
8 Resources and support For more information about the features of this release, see www.wiki.ubuntu.com/BionicBeaver/ReleaseNotes. Topics: • • • • Identifying the series of your Dell EMC PowerEdge servers Latest Release Notes Related documents and links Accessing documents using product selector Identifying the series of your Dell EMC PowerEdge servers The PowerEdge series of servers from Dell EMC are divided into different categories based on their configuration.
Table 1. PowerEdge servers naming convention and examples YX3X servers YX4X systems YX4XX systems YX5XX PowerEdge M630 PowerEdge M640 PowerEdge R6415 PowerEdge R6515 PowerEdge M830 PowerEdge R440 PowerEdge R7415 PowerEdge R7515 PowerEdge T130 PowerEdge R540 PowerEdge R7425 PowerEdge R6525 Latest Release Notes To access the latest Release Notes for this version: 1. Go to www.dell.com/support/home/products/software/operating_system. 2. Click the link for this version of Ubuntu. 3.
9 Contacting Dell EMC Dell EMC provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell EMC for sales, technical support, or customer service issues, go to www.dell.com/contactdell. If you do not have an active Internet connection, you can contact information on your purchase invoice, packing slip, bill, or the product catalog.
