I've been struggling with this for the past year, but never thought to
file a bug report. My use case is a little different, but the base
request - allow customization of the Xorg config - is the same.
My system is an Intel Skull Canyon NUC with Iris Pro integrated
graphics. I also have an external GPU box with an Nvidia 1080 Ti that
connects to the system with a Thunderbolt interface. Two displays are
connected - one to the main system's port, and one to external video
card's port.
The Nvidia driver requires an option added to the Xorg config to use the
external GPU:
Option "AllowExternalGpus" "True"
If this is not set, the Nvidia section of the Xorg config will fail, and
this cascades to Xorg not starting (i.e. login screen immediately drops
back to login screen.) Currently I work around this by editing
/usr/share/X11/xorg.conf.d/11-nvidia-prime.conf, which is generated by
gpu-manager. The problem comes when a system update occurs, and gpu-
manager is run again, re-generating the config file. Thus, it would be
beneficial to have a way to save customizations of gpu-manager's
configs.
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https://bugs.launchpad.net/bugs/1394653
Title:
gpu-manager's xorg.conf generation should be configurable
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