Comment # 116
on bug 75985
from Lukas Wunner
@Przemysław Kopa: The fix was applied by Takashi Iwai on Thursday Oct 17 with commit 94989e318b2f, it was merged to Linus' tree on Friday Oct 18 and will thus be part of v5.4-rc4 due out later today. It should appear in v5.3-stable within 1 or 2 weeks. You may want to double-check that the issue is gone with this fix. There's one problem remaining, you shouldn't have to manually echo "auto" to the HDA's control file because we call pm_runtime_allow() on the HDA device in drivers/pci/quirks.c:quirk_gpu_hda() -> pci_create_device_link(). Something must be calling pm_runtime_forbid() afterwards, perhaps this is triggered from user space on Arch Linux. I'm attaching a little debug patch which logs a stacktrace to dmesg whenever pm_runtime_allow() / _forbid() is called for a device. Feel free to attach dmesg output with this patch applied and I'll be happy to take a look at it.
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