I noticed that on 5.0.0-25-generic the module snd_hda_codec_hdmi is loaded, which is not true for 5.0.0-23-generic.
http://changelogs.ubuntu.com/changelogs/pool/main/l/linux-hwe/linux-hwe_5.0.0-25.26~18.04.1/changelog
* Unhide Nvidia HDA audio controller (LP: #1836308) - PCI: Enable NVIDIA HDA controllers
There was a fix to make nvidia audio controller visible that causes that module to be loaded, forcing the dedicated video card awake.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836308
Workaround, adding:
blacklist snd_hda_codec_hdmi options snd_hda_intel enable=1,0
on /etc/modprobe.d/blacklist.conf fixes the problem.
I noticed that on 5.0.0-25-generic the module snd_hda_codec_hdmi is loaded, which is not true for 5.0.0-23-generic.
http:// changelogs. ubuntu. com/changelogs/ pool/main/ l/linux- hwe/linux- hwe_5.0. 0-25.26~ 18.04.1/ changelog
* Unhide Nvidia HDA audio controller (LP: #1836308)
- PCI: Enable NVIDIA HDA controllers
There was a fix to make nvidia audio controller visible that causes that module to be loaded, forcing the dedicated video card awake.
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1836308
Workaround, adding:
blacklist snd_hda_codec_hdmi
options snd_hda_intel enable=1,0
on /etc/modprobe. d/blacklist. conf fixes the problem.