Monitors 2 and 3 no longer detected when trying to update AMD drivers

Welcome to Askubuntu. Please be specific and detail everything you did. "tried to update AMD drivers" really doesn't tell us anything. How and what did you do to update the drivers? Again, please be specific and outline all the steps and commands, etc., so we can determine what went wrong and where. Please review the [help section](https://askubuntu.com/help/how-to-ask). If this question is closed due to lack of detail, it can be reopened if you edit the question to include the necessary information. Thanks.

For example, all I ever really did for my AMD drivers was [install a few related amdgpu packages](https://packages.ubuntu.com/search?keywords=amdgpu&searchon=names&suite=all&section=all) using `apt` and then disable the radeon drivers and enable the built in, amdgpu kernel driver by [setting a few flags at boot time](https://wiki.archlinux.org/title/AMDGPU#Load_amdgpu_driver).

Did you download the driver from the AMD website? If so, how did the installation proceed? What version did you download and what version of Ubuntu are you using? I know the drivers downloaded from the AMD website don't always install well with the newest version of Ubuntu and it's probably best to go with the latest LTS (22.04) instead of the latest dev release (23.04).

Of course, I set the kernel parameters in `/etc/default/grub` for the line `GRUB_CMDLINE_LINUX_DEFAULT=` before `quiet splash` and didn't need to mess around with `mkinitcpio` because we're using Ubuntu, not ArchLinux.

i did download the driver specific to the AMD RX6900 and it did not install correctly even though im using Ubuntu version 22.04. I tried purging that install and re-trying with the sudp apt amdgpu command which didnt seem to fix it either.

i wonder if the issue is that i cant get the mesa installed from https://launchpad.net/~kisak/+archive/ubuntu/kisak-mesa. every time i run the code to install it it times out.

You'll have to edit your question, provide all the commands you used, and include any errors verbatim, copied and pasted from the terminal so we know what the problem is. "It didn't install" is much too vague and we have no way of knowing why. Also when editing your question, please format any terminal output or commands by using your cursor to highlight the code or terminal output and then press CTRL+K before you save the changes and this will automatically format the code. Thanks.

I would start by removing the ppa: `sudo apt update` and `sudo apt install ppa-purge` and `sudo ppa-purge ppa:kisak/kisak-mesa` and then do `sudo apt update` and `sudo apt dist-upgrade` and check if the packages are still installed: `dpkg -l | grep -i kisak` and if no packages are listed, then you can then proceed.

[As recommended by the AMD website](https://amdgpu-install.readthedocs.io/en/latest/install-prereq.html), first update the system: `sudo apt update` and `sudo apt dist-upgrade` and then uninstall any existing AMD driver install by running `amdgpu-uninstall` and then run `sudo apt purge amdgpu-install` and then download the latest version `cd ~/Downloads; wget 'https://repo.radeon.com/amdgpu-install/23.10.3/ubuntu/jammy/amdgpu-install_5.5.50503-1_all.deb'` and install the installer: `sudo apt update` and `sudo apt install ./amdgpu-install_5.5.50503-1_all.deb` and again `sudo apt update`

Then, run the installer: `amdgpu-install --accept-eula` there are other options like installing the vulkan stuff which is all mentioned on the [AMD installer page](https://amdgpu-install.readthedocs.io/en/latest/install-script.html). Also, contrary to what the instructions say, use of the `-y` flag is generally not recommended as it's considered a bad habit and you should always review changes before selecting `Y` and pressing ENTER to proceed.

If you have any problems, again, please edit your question and copy and paste the error. Also include the steps you took before you received the error. Thanks.

I sit in a Tesla and translated this thread with Ai: