I am using a Lenovo Legion Y720 laptop with a discrete GTX 1060 GPU. I can connect to an external monitor but there is no option to chose HDMI as output source for the speakers. Only the internal speakers are listed. I tried with a laptop without a discrete GPU and it worked. As far as I can see bumblebee is a dead project. What is the alternative for Nvidia Optimus now on Ubuntu 18.04? I am using the Nvidia proprietary drivers, version 390, but it has only caused me problems like overheating (90+ celcius), screen tearring and now this HDMI problem.
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I found a solution to this on this thread:
Guide:
The first file should be created at /usr/local/bin/ and named fix-hdmi-audio.sh and should contain:
#!/bin/sh
setpci -s 01:00.0 0x488.l=0x2000000:0x2000000
rmmod nvidia-uvm nvidia-drm nvidia-modeset nvidia
sh -c 'echo 1 > /sys/bus/pci/devices/0000:01:00.0/remove'
sh -c 'echo 1 > /sys/bus/pci/devices/0000:00:01.0/rescan'
modprobe nvidia nvidia-modeset nvidia-drm nvidia-uvm
The second file should be created at /etc/systemd/system/ and named fix-hdmi-audio.service and should contain:
[Unit]
Description=nVidia HDMI Audio Fixer
Before=systemd-logind.service display-manager.service
After=module-init-tools.service
[Service]
Type=oneshot
ExecStart=/usr/local/bin/fix-hdmi-audio.sh
[Install]
WantedBy=multi-user.target
Now run these two commands in the terminal after copying the above files:
chmod +x /usr/local/bin/fix-hdmi-audio.sh
systemctl enable fix-hdmi-audio.service
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Thank You SOOO much working sound on my "Nvidia GTX 1080" Finally a week of searching – markackerman8-gmail.com Sep 18 '18 at 04:22
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Spoke Too Soon My NVIDIA GTX 1080 now stops seeing HDMI-0 SOUND, No Matter what I do?? Any help truly appreciated. – markackerman8-gmail.com Sep 23 '18 at 17:51