【adesk】500 box, 500-s box, 600 box Odd screen & dual screen scenarios

Problem Description

The box is powered on first, and the monitor is powered on later. At this time, VM will not adapt to the monitor resolution and become 1024*720, and the dual screen is just a Copy screen, not an extended screen.

Effective troubleshooting steps

principle
500, 600, 500-s boxes:
1. Switch from Odd screen to dual screen, the dual screen Default default;
2. Switch from double pinyin to Odd screen;  and then Switch to double screen, this time Yes Copy screen;
3. Extended screen Settings: View VM.
4. The extended screen Switch to Odd screen, and then Switch to a dual screen, which Yes Copy screen at this time;

Root cause

Why does the resolution become 1024*720 after the monitor is powered on?
Cause: When the box Finish, Mon Default resolution needs to Settings. At this time, the monitor is not powered on, and the box does not detect that the monitor is connected. Default resolution is 1024*720;
Why can't Default resolution Yes 1920×1080?
Cause: The box does not know whether the display supports 1920×1080, so it Settings Mon minimum resolution as a compromise

Below the box is turned on, it must be able to detect that the monitor has been turned on and connected to keep it consistent with the last Shut Down.

solution

Ensure that the display power-on Time is equal to or earlier than the box power-on Time

Original Link

https://support.sangfor.com.cn/cases/list?product_id=26&type=1&category_id=11265&isOpen=true