01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] [10de:1c82] (rev a1)
01:00.1 Audio device [0403]: NVIDIA Corporation GP107GL High Definition Audio Controller [10de:0fb9] (rev a1)
I just successfully installed the nVidia drivers:
System: Dell XPS 8930
nVidia Card: GeForce GTX 1050 Ti (details, above)
OS: Fedora 28 (w latest updates)
NVIDIA-Linux-x86_64-410.73.run
I am not getting correct corresponding sounds from within Settings–>Sound–Test Speakers (button)
My receiver says it’s receiving 8 x 48k (~= 7.1)
HDMI video output at 1080p works seemingly perfectly
The display works @ 1080p but the display settings doesn’t show dual monitors when I am using a 2nd monitor. I use a 2nd monitor for troubleshooting by attaching the DVI out, kbd, mouse to my desktop display (275T), kbd, and mouse.
HDMI audio works in stereo, well.
HDMI audio in 5.1 or 7.1 doesn’t seem to have all the channels and the center channel is definitely not present–which is obvious when people are speaking and no voice can be heard.
Software
KODI is the primary software used on my HTPC
VLC - I have also tested using VLC with the same results
Audio & Video Connections:
DVI out → PC display Samgsung SyncMaster 275T (for setup purposes only)
HDMI out → DVDO iScan Duo → (projector & audio receiver)
- note the iScan Duo works with other HDMI inputs and various sources from stereo through 7.1 to the projector and audio receiver.
I read the “read this 1st” and am providing the following attachments:
a-2-chnl-sound.png - shows the work-around where I can get sound but only Digital Stereo seems working correctly
b-7.1-chnl-sound.png - picture of settings with 7.1 selected
c-7.1-chnl-sound-TestSpeakers.png - picture after pressing the “Test Speakers” button from picture “b”
d-Displays.png - Displays settings. I believe this should show 2 displays. You can see it shows the correct buttons for multiple displays. For some reason it is not showing the 2 displays as it should.
nvidia-bug-report.log.gz
nvidia-installer.log - as FYI given the install completed, but just in case

nvidia-installer.log (9.36 KB)
nvidia-bug-report.log.gz (1020 KB)