diff --git a/debugging/002-Ubuntu-20_04.md b/debugging/002-Ubuntu-20_04.md
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+# Debugging - Ubuntu 20.04
+
+There are proven reports of Ubuntu 20.04 working with AMD GPUs for OpenGL,
+perhaps because it uses an older kernel and contains in its `apt` package
+repositories older, tested versions of the AMDGPU Pro driver that may
+still support the Hawaii chipset in the R9 390's that I have.
+
+## Make bootable USB
+
+I overwrote the 30 GB USB stick that I have with 20.04.6 LTS and
+installed it alongside Ubuntu 22.04 to be able to mount and make 
+use of the `arcologos-infra` repo.
+
+## Download AMDGPU Pro
+
+For Ubuntu 20.04. It says it's for 20.04.5 so we'll find out whether
+the version patch makes a difference.
+
+https://www.amd.com/en/support/linux-drivers
+
+
diff --git a/debugging/002-Ubuntu-20_04/01-========== b/debugging/002-Ubuntu-20_04/01-==========
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diff --git a/debugging/002-Ubuntu-20_04/01-AMDGPU-23_10_3.md b/debugging/002-Ubuntu-20_04/01-AMDGPU-23_10_3.md
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+# AMDGPU Unified Linux Driver 23.10.3
+
+From https://www.amd.com/en/support/linux-drivers
+
+Radeon™ Software for Linux® version 23.10.3 for Ubuntu 20.04.5 HWE
+
+Revision Number
+`23.10.3`
+
+File Size
+14 KB
+
+Release Date
+7/31/2023
+
+## Downloaded File
+
+```
+$ sha256sum amdgpu-install_5.5.50503-1_all.deb 
+137069ec9ed61dabcab4da226fe9425c60089d4d74b71fe24df93dbadf3d65e9  amdgpu-install_5.5.50503-1_all.deb
+arcologos@arcologos-desktop:~/src/arcologos-infra$ ls -lh amdgpu-install_5.5.50503-1_all.deb 
+-rw-rw-r-- 1 arcologos arcologos 16K Aug  5 15:42 amdgpu-install_5.5.50503-1_all.deb
+```
+
+## Running the File
+
+```
+$ sudo dpkg -i ./amdgpu-install_5.5.50503-1_all.deb 
+Selecting previously unselected package amdgpu-install.
+(Reading database ... 158557 files and directories currently installed.)
+Preparing to unpack .../amdgpu-install_5.5.50503-1_all.deb ...
+Unpacking amdgpu-install (5.5.50503-1620033.20.04) ...
+Setting up amdgpu-install (5.5.50503-1620033.20.04) ...
+```
+
+## Installing Drivers
+
+```
+$ sudo amdgpu-install --usecase=opencl --no-dkms --opencl=rocr
+```
+
+## Listing Kernel Modules
+
+```
+03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii PRO [Radeon R9 290/390] (rev 80)
+        Subsystem: Micro-Star International Co., Ltd. [MSI] Hawaii PRO [Radeon R9 290/390]
+        Kernel driver in use: radeon
+        Kernel modules: radeon, amdgpu
+```
+
+## Daemon Messages
+
+```
+$ sudo dmesg
+```
+
+```
+[    4.046662] AMD-Vi: AMD IOMMUv2 functionality not available on this system - This is not a bug.
+[    4.323369] [drm] amdgpu kernel modesetting enabled.
+[    4.326774] amdgpu: CRAT table not found
+[    4.326782] amdgpu: Virtual CRAT table created for CPU
+[    4.326803] amdgpu: Topology: Add CPU node
+```
+
+## Rebooting
+
+To see if I can get the `amdgpu` kernel module to be used.