Comment # 111
on bug 75985
from Przemysław Kopa
(In reply to Lukas Wunner from comment #110) > What does "cat /sys/bus/pci/devices/0000:01:00.1/hdaudioC1D0/revision_id" say? It says: 0x100100 > If you add "codec->link_down_at_suspend = 1;" to patch_nvhdmi() in > sound/pci/hda/patch_hdmi.c, the issue may go away. > > The only question is whether your card's revision_id is listed in > snd_hda_id_hdmi[] such that patch_nvhdmi() is executed for your card. I added "HDA_CODEC_ENTRY(0x10de0403, "GPU 0403 HDMI/DP", patch_nvhdmi)" to snd_hda_id_hdmi[] (PCI ID of my Nvidia HDA wasn't there) and "codec->link_down_at_suspend = 1;" to patch_nvhdmi(). With those changes dGPU and HDA suspended normally (after echoing "auto" to HDA control file), so I think that this is definiteley the right track!
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