Chester-Gillon

0. Introduction

Some notes about an initial look at AlmaLinux 10. Downloaded live images from the links in How to download and write images

For testing copied the images to a MicroSD card. E.g.:

$ sha256sum -c CHECKSUM\(1\)
AlmaLinux-10.0-x86_64_v2-Live-GNOME.iso: OK

Chester-Gillon

0. Introduction

Contains some notes about use of a HP USB-C to RJ45 Adapter G2

1. HP Z4 G4 AlmaLinux 8.10

Using Kernel 4.18.0-553.51.1.el8_10.x86_64

The output of dmesg after plugged into a front panel USB-C port. There was a delay of several minutes before connected to an Ethernet switch and the following output ends with the link coming up:

Chester-Gillon

0. Introduction

fork() Causes DMA Buffer in Physical Memory to Retain Stale Data on Subsequent Writes describes an issue with a forked process causing issues with memory for DMA. It wasn't clear what mechanism was being used to allocate the memory for DMA.

The test_dma_descriptor_credits program was modified with the option of spawning a child process to see if could replicate the issue when VFIO is used for DMA mappings.

Used the following FPGA designs, which exercise both the memory mapped and stream interface test functions:

• dma_blkram (TEF1001)
• XCKU5P_DUAL_QSFP_dma_stream_loopback
• Nitefury Project-0 version 0x2

Chester-Gillon

0. Notes about Intel Ethernet drivers under Windows

My Sniffer Isn't Seeing VLAN, 802.1q, or QoS Tagged Frames shows the register key which is applicable to different Adapter Driver. Initially was unsure how to find which driver was was used by a particular adapter. Subsequently found that the following provide a mapping of the Windows Driver for different adpaters:

• Supported Operating Systems for Retail Intel® Ethernet Adapters : Looks to be for add-in network adapters
• Supported Operating Systems for Intel® Ethernet Controllers (LOM) : Looks to be for on-board network interfaces

1. Investigating multiple VLAN support under Windows 11

Using:

• HP Z6 G4 workstation

Chester-Gillon

0. Introduction

Some notes about using Vivado under Windows.

1. Missing VCOMP140.DLL

Vivado 2024.2 was installed in Windows 11 Pro for Workstations Version 24H2 (OS Build 26100.3323), after selecting Vitis as the top level instsallation.

On attempting to run vivado_lab get:

Chester-Gillon

0. Introduction

Some notes about using Xilinx ISE 14.7, which is the most recent version, for devices not supported under Vivado

1. Old libstdc++ libraries limited XPS functionality

Under Ubuntu 24.04.2 LTS on starting xps only got the ability to create a text file.

Xilinx Platform Studio (EDK) GUI not fully initiating in Linux describes the issue.

Chester-Gillon

Investigation to test the answer How to find the factory default MAC address?

Using Windows 11 Pro 24H2 (OS Build 26100.3037)

Only Ethernet interface with a cable connected is a ConnectX-4. No settings had been changed for the ConnectX-4 since it was installed.

Output from ipconfig /all:

Ethernet adapter Ethernet 5:

Chester-Gillon

0. Introduction

ASUS motherboard fan control under Linux mentions use of the pwmconfig command to identify fans.

Packages which provide pwmconfig:

• Ubuntu 24.04.1 LTS : fancontrol
• AlmaLinux 8.10 and 9.4 : lm_sensors

1. HP Z640 running Ubuntu 24.04.1 LTS

Chester-Gillon

0. Introduction

Some notes about BIOS settings for a HP Z6 G4.

Came with Windows 11 Pro for Workstations 24H2 installed. Updated to Version 24H2 (OS Build 26100.2894).

Windows Control Panel -> System and Security -> BitLocker Drive Encryption reports for the Operating system driver C:BitLocker off. There are currently no other drives fitted. The reason for checking if BitLocker was enabled was that when checking for a BIOS update within the BIOS got a warning that BitLocker should be disabled prior to updating the BIOS.

The Windows System Information reports BIOS Version/Date HP P60 v02.94, 17/05/2024

Chester-Gillon

0. Introduction

Contains some notes about using the X722 Ethernet controller built in to the HP Z6 G4, which uses the C622 chipset. Related is Intel X722 usage which used an Intel X722-DA2 PCIe card.

The PC doesn't have the HP Z 2-Port 10GbE Network Module (1QL49AA) option fitted, which would add two 1Gbps/10Gbps ports via a dedicated connector to the motherboard - see Networking Adapters for HP Workstations

As a result there are two RJ45 Ethernet ports:

1. One using a X722
2. One using a I219-LM, which also supports AMT