Debian 12 with RTX4070 dGPU installed, no display after reboot

#1

Hi, I have get Orin O6 64GB Memory version, and the system work fine with official debian 12 system.
Then I attached a RTX4070 insert on PCIE slot,

  1. nvidia-detect can recognize the card,
  2. install driver with nvidia-driver, nvidia-smi function OK, the card info could display correct, this means the driver installed correctly.
  3. but after reboot, there is no display when boot into system （Power on screen could be display）, system still alive but no display.
    is there any suggestion?
#2

Maybe there should be software or hardware switcher to use discrete graphics card? For the same as it works on the desktop motherboards in bios.

#3

I had issues like that when I had SPCR enabled in the BIOS/UEFI. Try disabling it.

#4

Have try to disable/enable SPCR, still no display. UEFI default setting is disable.

#5

I have installed nvidia driver successful with RTX5070 on Ubuntu 25.04. See another topic. So, this topic closed, thanks!