KVMD 2.0: Redfish support and HID driver improvements

This is a major new release with important improvements.

Let's take a look at the changes:

  • The first and most important change is updating the kernel to 5.4.69. Fixed the critical Linux bug with USB that could cause the Pi to reboot when using the keyboard and mouse on a rebooting host. I spent a few days debugging this problem and now it is solved in the Raspbian upstream.

  • The kernel update is also unlocked for ZeroW boards. The new kernel fixed an old bug that caused the kernel to hang on CSI HDMI at Zero. Yea, another kernel bug that I was directly involved in solving.

  • On the Pi-KVM side, the HID driver has been significantly improved, and now it clearly detects the USB state: the yellow color in web ui clearly shows when the cable is disconnected. Also added support for the NonUs and AltGr keys, fixed Win key in VNC.

  • Implemented basic support for Redfish as an improved and secure IPMI replacement for enterprise use (see here for documentation. Redfish requires no additional configuration and is available directly in KVMD. It uses the same authorization mechanism as the rest of the Pi-KVM. The only handle available /redfish/v1 without authorization produces a small static document for service discovery required by standard.

  • Added the ability to request confirmation for actions on custom GPIO buttons and switches (see View rules).

  • Now you can create USB Ethernet for direct communication between the Pi-KVM and the server (see here for more information). This release does not include a tool for address configuration and firewall, expect soon.

  • Improved the Web Socket API which no longer makes unnecessary broadcasts when connecting new clients. This is now convenient to use for getting the entire state of the Pi-KVM by the batch.

  • Config sections otg/msd, otg/acm and otg/drives were moved to otg/devices/msd, otg/devices/serial and otg/devices/drives. Of course, the old config will continue to work.

  • ... And many minor changes.

Note: Before upgrading ZeroW, you will probably need to remove the IgnorePkg = linux-raspberrypi and linux-raspberrypi-headers parameter from /etc/pacman.conf, if you added it earlier.

To update, follow:

rw
pacman -Syu

If you changed the file /etc/kvmd/override.yaml, you will see a new file: /etc/kvmd/override.yaml.pacnew. You can simply delete it or merge its contents with your own configuration. The new file contains commented-out usage examples and no longer contains (and requires) the {} row for an empty config.

After all perform reboot.