Multiple Monitors – One of three screens goes off after the screen is locked and Ubuntu 16.04 LTS restored

I have three displays in my computer setup, two with HDMI cables and one with DisplayPort cable. My problem is this:

When I start my computer, all the ads start up and work properly. If I lock my screen for a while (say a few minutes) and then open the lock, all screens will work properly. However, if I lock my screens and go away for a long time (for example, 15-30 minutes) and then open the screen lock, a screen connected to an HDMI cable will not start. Even if I try to adjust the display settings, nothing happens. My current fix is ​​to restart the computer and then start all ads correctly.

What could be the cause of this problem and how can this be resolved? I suspect it might have something to do with the system turning off the screens after a few minutes. The problem is that if I try to re-enable the screens, one of them will not boot (HDMI-0).

If you need it, you will find the issue of xrandr -q -Command:

Screen 0: at least 8 x 8, currently 6200 x 1920, maximum 32767 x 32767
HDMI-0 connected primarily 2560x1440 + 1080 + 480 (normal left inverted right x-axis y-axis) 608 mm x 345 mm
3840 x 2160 30,00 + 29,97 25,00 23,98
2560 x 1440, 59,95 *
1920x1080 60,00 59,94 50,00 29,97 23,97
1680 x 1050 59.95
1600 x 900 60.00
1440x900, 59.89
1280 x 1024 75.02 60.02
1280x800, 59.81
1280 x 720 60.00 59.94 50.00
1152 x 864 75.00
1024 x 768 75.03 70.07 60.00
800 x 600 75.00 72.19 60.32 56.25
720 x 576 50.00
720x480 59.94
640 x 480 75.00 72.81 59.94
HDMI-1 connected 1080x1920 + 0 + 0 left (normal left inverted right x-axis y-axis) 527 mm x 296 mm
1920 x 1080 60,00 * + 59,94 50,00 60,05 60,00 50,04
1600 x 900 60.00
1280 x 1024 75.02 60.02
1280 x 720 60.00 59.94 50.00
1152 x 864 75.00
1024 x 768 75.03 60.00
800 x 600 75.00 60.32
720 x 576 50.00
720x480 59.94
640 x 480 75.00 59.94 59.93
DP-0 connected 2560x1440 + 3640 + 480 (normal left inverted right x-axis y-axis) 607 mm x 345 mm
3840 x 2160 60,00 + 30,00
2560 x 1440, 59,95 *
1920x1080 60.00 59.94
1680 x 1050 59.95
1600 x 900 60.00
1440x900, 59.89
1280 x 1024 75.02 60.02
1280x800, 59.81
1280 x 720 60.00
1152 x 864 75.00
1024 x 768 75.03 70.07 60.00
800 x 600 75.00 72.19 60.32 56.25
640 x 480 75.00 72.81 59.94
DP-1 not connected (normal left inverted right x-axis y-axis)
DP-2 not connected (normal left inverted right x-axis y-axis)
DP-3 not connected (normal left inverted right x-axis y-axis)

The problem screen is the one labeled "HDMI-0".