Comment 19 for bug 1840835

I installed the test kernel:
linux-headers-5.0.0-28_5.0.0-28.29~lp1840835_all.deb
linux-headers-5.0.0-28-generic_5.0.0-28.29~lp1840835_amd64.deb
linux-image-unsigned-5.0.0-28-generic_5.0.0-28.29~lp1840835_amd64.deb
linux-modules-5.0.0-28-generic_5.0.0-28.29~lp1840835_amd64.deb
linux-modules-extra-5.0.0-28-generic_5.0.0-28.29~lp1840835_amd64.deb

uname -r: 5.0.0-28-generic

Power consumption was completely normal, idling at less than 4 watts as expected. While using iGPU, I noticed that each time I run lspci, it lags for less than a second and the following messages appear on dmesg:
[ 7.587195] snd_hda_codec_hdmi hdaudioC1D0: Unable to sync register 0x7f0800. -5
[ 7.587200] snd_hda_codec_hdmi hdaudioC1D0: HDMI: invalid ELD buf size -1

On file dmesg50028 I provide the dmesg output.

I switch to nvidia gpu for test purposes. Everything is normal, and those messages only appear at gpu initialization, and lspci didnt lag at all. On file dmesg50028nvidia I provide the dmesg output after switching to nvidia gpu.

Excluding those messages, I conclude that it fixes the power consumption problem.