Hi I just installed Deepin 15.5 and everything seems to work fine except for my hdmi port. The xrandr command only shows eDP-1 connected primary. I've tried installing the the graphics manager and switching between intel, nvidia, and bumbleebee drivers. None worked. I've also found that the boot logo shows up on the external monitor but once I reach the login screen it loses the signal. I use an Acer Predator Helios 300 laptop with an nvidia gtx 1060. Please help. I really like Deepin OS.
中文 
Hi I just installed Deepin 15.5 and everything seems to work fine except for my hdmi port. The xrandr command only shows eDP-1 connected primary. I've tried installing the the graphics manager and switching between intel, nvidia, and bumbleebee drivers. None worked. I've also found that the boot logo shows up on the external monitor but once I reach the login screen it loses the signal. I use an Acer Predator Helios 300 laptop with an nvidia gtx 1060. Please help. I really like Deepin OS.