[16] INFO: # Xorg pre-start hook
[16] INFO: Previous state was: {'type': 'pending_pre_xorg_start', 'requested_mode': 'integrated', 'current_mode': None}
[16] INFO: Requested mode is: integrated
[411] INFO: Available modules: ['nouveau', 'nvidia', 'nvidia_drm', 'nvidia_modeset', 'nvidia_uvm']
[412] INFO: Unloading modules ['nvidia_drm', 'nvidia_modeset', 'nvidia_uvm', 'nvidia'] (if loaded)
[420] INFO: Cannot unload modules: None
[420] INFO: Waiting 1s and retrying.
[1430] INFO: Cannot unload modules: None
[1431] INFO: Waiting 1s and retrying.
[2439] INFO: Cannot unload modules: None
[2439] INFO: Waiting 1s and retrying.
[3447] INFO: Cannot unload modules: None
[3448] INFO: Waiting 1s and retrying.
[4455] INFO: Cannot unload modules: None
[4456] INFO: Waiting 1s and retrying.
[5466] INFO: Max tries (6) exceeded
[5467] ERROR: Xorg pre-start setup error
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/optimus_manager/kernel.py", line 269, in _unload_modules
    subprocess.check_call(
  File "/usr/lib/python3.9/subprocess.py", line 373, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command 'modprobe -r nvidia_drm nvidia_modeset nvidia_uvm nvidia' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/optimus_manager/hooks/pre_xorg_start.py", line 51, in main
    setup_kernel_state(config, prev_state, requested_mode)
  File "/usr/lib/python3.9/site-packages/optimus_manager/kernel.py", line 25, in setup_kernel_state
    _nvidia_down(config)
  File "/usr/lib/python3.9/site-packages/optimus_manager/kernel.py", line 104, in _nvidia_down
    _unload_nvidia_modules(available_modules)
  File "/usr/lib/python3.9/site-packages/optimus_manager/kernel.py", line 214, in _unload_nvidia_modules
    _unload_modules(available_modules, ["nvidia_drm", "nvidia_modeset", "nvidia_uvm", "nvidia"])
  File "/usr/lib/python3.9/site-packages/optimus_manager/kernel.py", line 277, in _unload_modules
    raise KernelSetupError(f"Cannot unload modules {modules_to_unload}: {e.stderr}") from e
optimus_manager.kernel.KernelSetupError: Cannot unload modules ['nvidia_drm', 'nvidia_modeset', 'nvidia_uvm', 'nvidia']: None
[5470] INFO: Removing /etc/X11/xorg.conf.d/10-optimus-manager.conf (if present)
[5471] INFO: Writing state {'type': 'pre_xorg_start_failed', 'switch_id': '20211129T172110', 'requested_mode': 'integrated'}