Possible issue with patch-realsense-ubuntu-lts-hwe.sh

[Mathlete-101]

Required Info
Camera Model	{ D435 }
Firmware Version	actually not relevant
Operating System & Version	Ubuntu 22
Kernel Version (Linux Only)	e.g. 5.15.0-1063-raspi
Platform	Raspberry Pi
SDK Version	lastest git commit as of 11/18/2024 }
Language	{n/a }
Segment	{Robot }

Issue Description

I'm trying to build from source, but when I did so, the build script failed on line 178. The last two lines printed were as follows:
`Fetching Ubuntu LTS tag to the local kernel sources folder
fatal: You need to specify a tag name.'

To try to diagnose this, I get on to the github and look at the script. Eventually, I check this history, and what do you know? The very last commit to this file on September 8 modified this exact section of code to work differently.

[Mathlete-101]

Upon further analysis of the script, I don't know what's happening anymore. I'll reopen if there is a real problem.

[Mathlete-101]

I have determined that the real issue is, why is this version not supported or is there an issue with my os configuration?

[MartyG-RealSense]

Hi @Mathlete-101 The most reliable way to build from source code on Raspberry Pi is to use the libuvc backend method, which provides a pre-made build script called 'libuvc_installation.sh'.

https://github.com/IntelRealSense/librealsense/blob/master/doc/libuvc_installation.md

This installation method bypasses the kernel, and so it is not dependent on use of a particular Linux version or kernel version and you do not need to apply the kernel patch script.

https://github.com/IntelRealSense/librealsense/blob/master/scripts/libuvc_installation.sh

[Mathlete-101]

I'm getting these errors when I try that.

[MartyG-RealSense]

I reviewed the case again from the beginning. As you were attempting to apply the hwe patch script to a kernel on a Raspberry Pi, that likely explains your initial problems with the fatal: You need to specify a tag name message, as this patch script is intended for use on desktop and laptop PCs with x86 / x64 architecture rather than Arm architecture devices such as Pi.

If you are able to use CMake then instead of using the libuvc_installation.sh script, a similar installation method described at #9931 (comment) called RSUSB Backend can be used. Like libuvc backend, RSUSB does not require a kernel patch script to be applied.