在 XPS 15 9560 上使用 Ubuntu 20.04，我安装了该system76-power软件包以随意禁用 GPU，因为 90% 的时间我都不需要它。它完美地工作了几个月，但现在我在它和一个nvidia-prime包之间发生了冲突（可能来自nvidia-driver-440/focal-updates 450.66-0ubuntu0.20.04.1.
$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
system76-power : Conflicts: nvidia-prime
E: Broken packages
我该如何解决这个冲突？
我应该提到我不能用 apt 升级，因为它会阻塞整个过程（我可以升级单个包，但我更愿意先解决这个问题）。
我没有安装内存nvidia-prime，但它可能已由驱动程序实用程序自动安装。