After update to 20.12.1 (dont' know what was before) radeon software after reboot system my second monitor always black (no input signal) and going to sleep.
I have Radeon RX 560 with TWO monitors and TV (HDMI, Displayport and DVItoHDMI). Disconnect monitor with DisplayPort.
I totally reinstall drivers with DDU after this problem, but it did not help.
I found temporary solution how to enable monitor - Settings - display - turn off this display, and back to extend this display. But after reboot i have same problem - always need to reconnect this monitor
Windows 10 1909.