Release Notes
Table Of Contents
- Ubuntu Server 20.04 LTS for Dell EMC PowerEdge Servers Release Notes
- Contents
- Release summary
- Compatibility
- New and enhanced in this release
- Important notes
- Known issues
- A bus fatal error is detected on BCM57XX card
- Intel E810 and X710-T4L(device id 0x15ff) network cards are not detected after Ubuntu 20.04 is installed
- Ubuntu deployment through MaaS fails with Broadcom network cards BCM57xx
- The name of the NVMe device may change when it is hot-inserted after a surprise removal
- NVMe devices are enumerated in namespace 2 when hot-inserted into the server after being surprise removed
- /proc/mdstat and mdadm -D commands display incorrect statuses when two NVMe devices are surprise removed from a RAID 5 MD array
- Status of the RAID 0 LV is displayed as Available when one of the members of the RAID array is surprise removed
- BIOS Dell Update Packages (DUPs) will not run on Ubuntu 20.04
- Ubuntu Server 20.04 live image installation fails due to a loss of network connectivity
- CCP initialization failed error encountered after Ubuntu.20.04 is installed
- NVMe drive is not detected after multiple hot plug operations
- Limitations
- Updating Ubuntu
- Resources and support
- Contacting Dell EMC
Ubuntu Server 20.04 live image installation fails due
to a loss of network connectivity
Description The Ubuntu Server 20.04 live image installation fails due to a loss of network connectivity. The live image
is designed to update all the packages to the latest version and then proceed with installation.
Solution For seamless installation of Ubuntu Server 20.04, at least one network connection is required.
Systems affected All yx4x and yx5x Dell EMC PowerEdge servers.
Applies to Ubuntu 20.04
Tracking number 168103
CCP initialization failed error encountered after
Ubuntu.20.04 is installed
Description The following error message is displayed after Ubuntu 20.04 is installed:
ccp initialization failed
Functionality of the operating system is not affected, and the error message can be ignored.
Cause The CCP engine is disabled in the system BIOS. The operating system recognizes the CCP engine
however, it is not initialized.
Systems affected All yx4x and yx5x Dell EMC PowerEdge servers.
Applies to Ubuntu 20.04
Tracking number 169087
NVMe drive is not detected after multiple hot plug
operations
Description
NVMe drive is not detected when multiple hot plug operations are performed.
Cause A race condition that is related to MSI interrupts and their handling in the pciehp driver interrupt service
routine causes this issue.
Workaround 1. Read the Slot Status Register in the PCI Express Capability structure by running the following
command:
setpci -s e0:03.2 CAP_EXP+0x1a.w
Output: 0148 (value returned)
2. Clear the event bits that are impacted by running the following command:
setpci -s e0:03.2 CAP_EXP+0x1a.w=0x0108
3. Read the Slot Status Register again to confirm that event bits are cleared by running the following
command:
setpci -s e0:03.2 CAP_EXP+0x1a.w
Output: 0040 (value returned)
4. Unplug the drive and then plug-in the drive after clearing the event bits.
Systems affected All yx4x and yx5x Dell EMC PowerEdge servers.
Applies to Ubuntu 20.04
Known issues 11