If you have previously tried to install the proprietary drivers you might need to do fresh install of Deepin 15. After that I would go control panel in Display.
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cxbii
deepin
2016-01-22 23:25
#2
Please use the "Deepin Feedback" feedback to this problem, thank you!
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Hello! Please help me. On the graphics card is not energized no matter what I did.
Proprietary drivers are not installed.
sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0 : IGD : + : Pwr : 0000 : 00 : 02 . 0
1 : DIS : : DynOff : 0000 : 01 : 00 . 0
Deepin 15
Samsung np370r5e
ATI HD 8750M