HP 1920 switches (and others of the same kind) have a CLI mode which is highly restricted. It is possible to unlock this, providing full access to the configuration of the switch through CLI.
Log on to the CLI (SSH or Telnet) with the admin user and the password (default: none).
Type and press Enter:
_cmdline-mode on All commands can be displayed and executed. Continue? [Y/N]
Press Y to confirm.
Please input password:
Enter the password. This is a firmware-set password and is not user-defined. Depending on the firmware, try one of these:
If successful, you can now run all commands.
By default, when logging in on a HP switch in IRF mode using the web interface, you can only retrieve hardware information of the switch holding the master role. You can retrieve information for the other switches when you log on using Telnet or SSH, then type:
display device manuinfo
This will display hardware information for all chassis and slots.
You may get the following error when trying to uninstall HP Client Security:
The solution, albeit a very odd one, is to disable all CD/DVD drives on your HP system through Device Manager (Start → Run → devmgmt.msc).
After the uninstallation, you can re-enable the device.
Resetting a HP 1810-24 or -24G to factory defaults is easy:
You can check the warranty and support contract status of your HP products online. This includes the base warranty, support contracts and/or carepacks.
Backups with HP Data Protector may fail with the following error:
First, attempt to perform a manual clean of the drive, then try re-running the backup. If it fails again, power-cycle/reboot the drive/library.
If the error still persists, start HP Library and Tape Tools and run a drive assessment. You'll need to load a tape into the drive first. If the test fails (i.e. it returns an error code, such as internal error), call HP for support.
No_Light means there's no link on the port. Usually this indicates a problem with the physical wiring, either a faulty cable, or the TX/RX have been swapped.
No_Sync means there's a link on the port (so technically, wiring is okay), but there's a problem with the actual communication. The most common problem is a mismatch in speed on the switch port and the HBA on the other side. Your best bet would be to set the port's speed (temporarily) to auto-negotiate and see what speed is selected. If this does not work, try manually setting the port fixed to lower speeds.
Before installing ROK licenses on your virtual machines on VMware, be sure to allow SMBios reflection of the host to the VM's. Otherwise, authorization will fail with a This system is unsupported message.
To do this, go to the settings of your newly created VM. Click the tab Configuration, then click General, then the button Configuration Parameters. Add a new row:
SMBIOS.reflectHost = TRUE
If you have an HP laptop with an unknown device with hardware-id HPQ6001, it's the HP wireless button driver. Apparently some models on their support website lack this driver in the download list (it was the case for a HP Envy Touchsmart 1230eb).
Direct link to download: http://ftp.hp.com/pub/softpaq/sp58501-59000/sp58720.exe
If you have an HP Officejet Pro 8500, and have issues with your prints not maintaining the page layout (portrait or landscape), try enabling Print directly to printer in the printer properties.