Ubuntu
linux package

  1. Bug #1840835
  2. Comment #8

Comment 8 for bug 1840835

Revision history for this message
George Kapetanos (kapgeorge) wrote :

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.