Ubuntu server 64 bit can access only 4gb not 8gb ram on a new pi 8gb model

[samlearner-prog]

I have researched ubuntu forums as well, but most discussions point towards a firmware issue. pls help check.

[kencormack]

This forum is for reporting problems with the "Raspberry Pi OS" 64-bit beta OS, not Ubuntu Server 64-bit

[satmandu]

@samlearner-prog I don't have my 8Gb pi yet but can you see if the official raspberry pi foundation kernels work properly with the 8gb rpi4b?

Try using this script to build a kernel package deb that you can install on ubuntu arm64 server:

https://gist.github.com/satmandu/a507c59d84737f6d29ff353395819d51

[kencormack]

The official "Raspbian" Buster (32-bit) image should work just fine. I'm not a developer for this 64-bit effort. I was just pointing out that your thread seems to suggest you wanted to talk about Ubuntu Server, and not "Raspberry Pi OS" (the name for the Pi's beta 64-bit kernel.) Just wanted to make sure you were aware this forum isn't for discussing anything but the beta.

[samlearner-prog]

@kencormack - i realised just a little too late. apologies.
@ satmandu - many thanks for the pointer.
i will close