There are a lot of reports on line discussing similar problems, generally with Windows, and it's been around for several years. Obviously the monitor, computer port, and cable are satisfactory. So, what happens if you connect only the HDMI port and reboot?
Do you have Nvidia graphics? If so, the proprietary driver might help. If you are using Wayland graphics, switching to X might work. Some have solved it by disabling secure boot in the BIOS.
There are a lot of reports on line discussing similar problems, generally with Windows, and it's been around for several years. Obviously the monitor, computer port, and cable are satisfactory. So, what happens if you connect only the HDMI port and reboot?Do you have Nvidia graphics? If so, the proprietary driver might help. If you are using Wayland graphics, switching to X might work. Some have solved it by disabling secure boot in the BIOS.
Do you have Nvidia graphics? If so, the proprietary driver might help. If you are using Wayland graphics, switching to X might work. Some have solved it by disabling secure boot in the BIOS.