Comment 0 for bug 1923016

Description:
Checkbox-ng would adjust the graphic mode from "Performance" to "Power Saving" during client-cert-20-04 testing, and then the screen would stays at Boot logo.

Steps to reproduce:
1. Connect an external monitor to dGPU.
2. Power on system and boot into OS.
3. Make sure the graphic profile is in performance mode.
stanley@stanley-ThinkPad-T490:~$ prime-select query
nvidia
4. Run client-cert-20-04 test plan.
Note: the screen would stays at Boot logo after checkbox-ng switch the graphic mode to "power saving" mode.

Test environment:
A system w/ iGPU and nVidia GPU installed.