Primary display is disabled with multiple monitors

[yochananmarqos]

Hardware
System76 Serval WS (serv12)

Distribution:

NAME="Pop!_OS"
VERSION="20.10"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 20.10"
VERSION_ID="20.10"
HOME_URL="https://pop.system76.com"
SUPPORT_URL="https://support.system76.com"
BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
PRIVACY_POLICY_URL="https://system76.com/privacy"
VERSION_CODENAME=groovy
UBUNTU_CODENAME=groovy
LOGO=distributor-logo-pop-os

Related Application and/or Package Version

system76-driver:
  Installed: 20.04.19~1608084442~20.10~03c3885
  Candidate: 20.04.19~1608084442~20.10~03c3885
  Version table:
 *** 20.04.19~1608084442~20.10~03c3885 1001
       1001 http://ppa.launchpad.net/system76/pop/ubuntu groovy/main amd64 Packages
       1001 http://ppa.launchpad.net/system76/pop/ubuntu groovy/main i386 Packages
        100 /var/lib/dpkg/status

Issue/Bug Description:
Anytime source /etc/profile is run, every script in /etc/profile.d/ is executed. When /etc/profile.d/s76-nvidia-fullcomp.sh is run with multiple monitors, the laptop display is disabled and an external monitor becomes the primary display.

See https://wiki.archlinux.org/index.php/NVIDIA/Troubleshooting#Multi-monitor