Missing option to select which nvidia card to use (nvidia eGPU vs nvidia iGPU)

[hnsl]

Describe the bug I have two Nvidia GPUs. Sometimes I have my Nvidia eGPU connected. I am using optimus-manager to switch between my eGPU and internal GPU. However, when I have both GPUs connected, optimus-manager doesn't have any flag to say what Nvidia card to use. Instead it just prints "Multiple nvidia GPUs found ! Picking the last enumerated one." This heuristic is wrong for me as I always want it to pick the eGPU if it's connected, which comes later in the list.

I did an ugly hack where I just manually patched pci.py to pick the one last in the list instead. But preferably this should be solved with a flag (like --prefer_gpu) or better heuristic (e.g. use most powerful) although this is bound to be wrong for some use-cases.

Note that this is a critical feature and not a "nice to have". This is the primary reason why I am using optimus-manager and this bug is breaking the usefulness of this tool for me, but thankfully I could just patch the code as a workaround.

System info Please include :

• Your distribution
• Your desktop manager (KDE, GNOME, Cinnamon...), if you have one
• You display manager (SDDM, GDM, LightDM...), if you have one. If you do not know, you are probably using the one coming with your desktop manager.
• Your laptop model, if you think it could be related to the problem
• The version of optimus-manager you are using : latest stable release (optimus-manager), or the latest Git version (optimus-manager-git)
• Your custom optimus-manager configuration file at /etc/optimus-manager/optimus-manager.conf, if you made one

Logs Run optimus-manager --status in a console, and if an error message appears, post it here. The message should also point you to a log path, attach it here as well. If there is no error message but you are still experiencing issues, grab the most recent files in /var/log/optimus-manager/switch/ and /var/log/optimus-manager/daemon/.

[jamincollins]

I just ran into this myself and can definitely say I would love an option (other than patching the code) to indicate which to select if multiples are present. For now I too have altered pci.py to return the last one:

        if len(ids_list) > 0:                                                                                          
            #bus_ids[manufacturer] = ids_list[0]                                                                       
            bus_ids[manufacturer] = ids_list[-1]