kaaled
November 7, 2022, 2:28pm
#1
As it is clear from the title
You can disable your external GPU in the BIOS.
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What GPU do you have?
If it’s nvidia you can try disabling the driver:
# Nvidia Troubleshooting Guide
## System freezes during boot / Graphical login manager is not visible
If you have an NVidia graphics card it will probably not work under Xen out of the box. If your system freezes during boot and you don't see the graphical login manager after you installed Xen, then this problem most likely affects you. The following steps should provide a workaround so that you should be able to use your NVidia with X under Xen, however without any fancy "desktop effects".
### Boot in failsafe
Boot your system using the "failsafe" boot menu, that should have been automatically added to your `grub.conf` when you installed the Dom0 kernel.
If the X Window System doesn't start now, this is probably a non-Xen related issue and this guide will probably not help you.
### Configure X with nouveau
Assuming your X Window System works fine now when you booted from the "failsafe" configuration, do the next steps...
1. Do not log into X, but instead switch to a text console (press Ctrl-Alt-F2)
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Then follow what I posted in the link above but instead of nouveau you have to blacklist radeon:
rd.driver.blacklist=radeon modprobe.blacklist=radeon
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