I strongly advise to do so before rebooting if you're not kind to appreciate the tty2 at boot. So all I did is remove EVERY nvidia driver and reinstall the right one. Any X11/X.org guru would know exactly now how to repare what I did I'm not one. Next issue I ran into is obviously I installed so many drivers I couldn't startx. Reason being, thunderbolt needs to be authorised by the user (or sudo, can't check I'm a sudoer and can't be bothered to). If you are having this issue as of now, the reason is very likely the Thunderbolt (you can check it by the visual leds not turning on). Ran into the same issue a few days ago, I managed to make it work, but it's unlikely my problem was the same. Is this an impossible goal? is there some other way to get this eGPU working with my system? I figured the next step was installing NVIDIA drivers, so I did sudo add-apt-repository ppa:xorg-edgers/ppaīut those failed to install, so then I tried going to NVIDIA's website to download the appropriate drivers, i had to kill the X11 server sudo service lightdm stop and switch over to tty2 to go through the installation process, but this also failed, giving me errors that said no NVIDIA hardware could be found. Going to 'Software & Updates' > 'Additional Drivers' tab doesn't give me any NVIDIA options, I assume this is because I don't have an internal NVIDIA card, if I run lspci -k | grep -A 2 -i "VGA" this is my output: 00:02.0 VGA compatible controller: Intel Corporation Device 591e (rev 02)Ġ0:13.0 Non-VGA unclassified device: Intel Corporation Device 9d35 (rev 21) So it seems Ubuntu has some idea i've plugged something in right? > 03:00.0 System peripheral: Intel Corporation Device 15d9 (rev 02) > 02:02.0 PCI bridge: Intel Corporation Device 15da (rev 02) > 02:01.0 PCI bridge: Intel Corporation Device 15da (rev 02) > 02:00.0 PCI bridge: Intel Corporation Device 15da (rev 02) my kernel is 4.11.0-14-generic, when I diff the output of lspci before plugging in the eGPU to my Thunderbolt 3 port and after I get this: > 01:00.0 PCI bridge: Intel Corporation Device 15da (rev 02) I am a bit paranoid on computer security.I recently purchased an external GPU, specifically the Aorus GTX 1070 Gaming Box to use with my laptop, I have a Dell 2-in-1 running Ubuntu 16.04 LTS. I selected the option that 3rd party drivers be installed and Ubuntu then automatically installed the NVIDIA drivers (450). I just wanted to put that disclaimer out there. I installed Ubuntu 20.04, with the eGPU connected. Of course, if there is no sensitive data on the computer, or the risk of becoming a target is considered nearly impossible, then disabling all thunderbolt security may be worth the benefits. If any of the requirements above are not met, I believe that completely disabling thunderbolt security is insecure and should be refrained from. Computer is never left running unattended (where other people could have physical access).All disks are fully hardware encrypted, meaning no data can be accessed while the computer is turned off.In my opinion, completely disabling thunderbolt security should be relatively unproblematic if all of the following apply: A site that does a good job of explaining some of the security issues can be found here. Disabling Thunderbolt security should not be done deliberately without knowing the security implications. The solution you found is unfortunately not a "synonym" for the Pre-Boot ACL setting mentioned in the troubleshoot notes. If you feel that such a mention would have helped you a lot, then maybe it would be an option to mention it together with a disclaimer: I didn't mention the option to completely disable thunderbolt security intentionally.
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