I recently installed Debian 10 and it detects my second monitor, and when I enable dual monitors it turns on, but there is nothing displayed on it. Just a blank black screen.
There was one instance a couple day's ago where I left it connected and in dual monitor mode for a few hours and it finally started getting a video feed after a while, but I haven't been able to get it to do it since, and it came on rather randomly while I was across the room.
Any help here would be greatly appreciated.
The output of xrandr is
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Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
VGA-0 connected (normal left inverted right x axis y axis)
1680x1050 59.95 +
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
HDMI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 345mm x 194mm
1920x1080 59.93*+
1680x1050 60.00
1400x1050 60.00
1280x1024 59.95
1440x900 59.99
1280x960 59.99
1280x854 59.95
1280x800 59.96
1280x720 59.97
1152x768 59.95
1024x768 59.95
800x600 59.96
848x480 59.94
720x480 59.94
And the output of applicable output of lspci -v is
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01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710/M92 [Mobility Radeon HD 4530/4570/545v] (prog-if 00 [VGA controller])
Subsystem: Dell Mobility Radeon HD 4570
Flags: bus master, fast devsel, latency 0, IRQ 25
Memory at d0000000 (32-bit, prefetchable) [size=256M]
I/O ports at 2000 [size=256]
Memory at fc000000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon