I am seeing the same problem on a Dell Precision 7750. Ubuntu 20.04LTS kernel: 5.11.0-27-generic #29~20.04.1-Ubuntu SMP
graphics: VGA compatible controller: NVIDIA Corporation TU106GLM [Quadro RTX 3000 Mobile / Max-Q] (rev a1) plus Intel i915 processor: Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz With nvidia-prime installed, running nvidia-settings presents three options: NVIDIA (Performance Mode), NVIDIA On-Demand, Power Save In Performance Mode, only the external HDMI port is active. Booting with no external monitor produces a blank laptop LCD display, but the external monitor is active. Using System Settings / Display, only the external monitor is detected. The keyboard secondary function key Fn F8 has no effect. Laptop screen is blank if booted without an external monitor connected. In On-Demand mode, only the laptop display is active and the external monitor has no output. System Settings / Display detects both monitors. The Fn F8 key pops up a display mode selection tool to select how the screens will be configured, if the external-monitor-only mode is selected, the laptop screen is blank, and there is no display on the external monitor. All other selections have no effect. In Power Save mode, only the laptop display is active and the external monitor has no output. System Settings / Display detects only the laptop monitor. The keyboard secondary function key Fn F8 has no effect. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871721 Title: Second Monitor on HDMI blank screen/blink screen with Nvidia + Intel & Ubuntu 20.04? (ASUS Laptop) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1871721/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
