Multiple displays on Fedora 37 does nothing unless rebooted

The drivers were properly installed and you rebooted, but the modules did not load.

now we need to know if you have secure boot enabled or disabled.
dmesg | grep -i secure should give a 2 line response that says either enabled or disabled.

If secure boot is enabled then you have 2 choices

  1. disable secure boot in the bios
  2. sign the nvidia modules so they can be loaded even with secure boot enabled.

If disabled then try another reboot.

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Thanks Jeff

Looks like secure boot is indeed enabled:

$ dmesg | grep -i secure [ 4.234225] amdgpu 0000:05:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available [ 72.167872] amdgpu 0000:05:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available [ 72.511812] Bluetooth: hci0: Secure boot is enabled

I’ve disabled secure boot in BIOS:

$ dmesg | grep -i secure
[    0.000000] secureboot: Secure boot disabled
[    0.005133] secureboot: Secure boot disabled
[    4.072369] amdgpu 0000:05:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available
[    6.485544] Bluetooth: hci0: Secure boot is enabled

So is nvidia now active?

This seems to say yes:

$ lsmod | grep nvidia
nvidia_drm             73728  1
nvidia_modeset       1220608  2 nvidia_drm
nvidia_uvm           2904064  0
nvidia              56393728  112 nvidia_uvm,nvidia_modeset
nvidia_wmi_ec_backlight    16384  0
video                  65536  4 nvidia_wmi_ec_backlight,amdgpu,ideapad_laptop,nvidia_modeset
wmi                    45056  4 video,nvidia_wmi_ec_backlight,wmi_bmof,ideapad_laptop

But when I booted, I did get a kernel error report (like I’ve been having at almost every reboot) about nouveau failing. IIRC, that’s the non nividia driver.

On the other hand, the fedora configuration panel About clearly says “Graphics: NVIDIA GeForce RTX™ 3060 Laptop GPU / Advanced Micro Devices, Inc. [AM…”. So I presume yes.

And mirroring just works!

Resolved. Thank you Jeff V, you’ve been a life saver!

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That is not an error, per se. It is telling you that the nouveau fallback service (which is triggered when nvidia cannot be loaded) fails (because it is not needed). Merely an alert message but not a fault to worry about.

And yes the ‘About’ panel is now telling you both GPUs seem to be active…

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