On Wed, 27 Nov 2019 16:57:04 +0100, Takashi Iwai wrote: > > On Wed, 27 Nov 2019 16:46:00 +0100, > Hans de Goede wrote: > > > > Hi Takashi, > > > > On 27-11-2019 15:39, Takashi Iwai wrote: > > > On Wed, 27 Nov 2019 15:26:37 +0100, > > > Michał Matysiak wrote: > > >> > > >> Hi > > >> > > >> Recently I've encountered this error and as Hans de Goede's request I'm > > >> reporting this back to you. This happens while booting my laptop > > >> connected to docking station and without using one. > > >> > > >> kernel: WARNING: CPU: 1 PID: 330 at sound/hda/hdac_component.c:290 snd_hdac_acomp_init+0xde/0x130 [snd_hda_core] > > >> There are 2 more "cut here", but they're almost identical so I've only > > >> included one in this email. > > >> > > >> Don't know what will be valuable to you, but I'm willing to help test > > >> this and do what I'm told. So, how can I help? > > >> > > >> More info about this particular kernel and issue, that led to this is at: > > >> https://bugzilla.redhat.com/show_bug.cgi?id=1757891 > > >> > > >> dmesg output: > > >> > > >> Nov 26 18:05:45 kernel: microcode: microcode updated early to revision 0x2f, date = 2019-02-17 > > >> Nov 26 18:05:45 kernel: Linux version 5.4.0-0.rc8.git0.1.rhbz1757891.fc31.x86_64 (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 9.2.1 20190827 (Red Hat 9.2.1-1) (GCC)) #1 SMP Wed Nov 20 14:50:34 UTC 2019 > > >> Nov 26 18:05:45 kernel: Command line: BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.4.0-0.rc8.git0.1.rhbz1757891.fc31.x86_64 root=/dev/mapper/fedora-root ro resume=/dev/mapper/fedora-swap rd.lvm.lv=fedora/root rd.luks.uuid=luks-efd8b438-8f56-405a-8cea-88f83ca38d2b rd.lvm.lv=fedora/swap rhgb quiet > > >> ... > > >> ... > > >> ... > > >> Nov 26 18:06:16 kernel: ------------[ cut here ]------------ > > >> Nov 26 18:06:16 kernel: WARNING: CPU: 0 PID: 461 at sound/hda/hdac_component.c:290 snd_hdac_acomp_init+0xde/0x130 [snd_hda_core] > > > > > > This should have been already fixed by the recent commit > > > 5a858e79c911330678b5a9be91a24830e94a0dc9 > > > ALSA: hda - Disable audio component for legacy Nvidia HDMI codecs > > > which is already included in Linus tree. Please check it. > > > > Thanks, I've started a scratch kernel build with the relevant patches added, > > for the Fedora users hitting this to test. > > > > The reason they started looking into their dmesg is that their nvidia GPU (hybrid gfx setup) > > will no longer suspend with recent kernels, this is with a 5.4 kernel which already has the > > > > "ALSA: hda - Force runtime PM on Nvidia HDMI codecs" > > > > Fix and for good measure I've already given them a test kernel with the: > > "ALSA: hda: Allow HDA to be runtime suspended when dGPU is not bound to a drive" > > > > patch added. But looking at the fix for the oops I'm not sure if fixing > > the oops is also going to fix the issue with the dGPU no longer suspending? > > I guess it's irrelevant with that problem, as this kernel warning (not > really an Oops) is just about skipping the multiple audio component > registration. And the audio component isn't used in nouveau side on > 5.4.x at all, and it's just a placeholder. But who knows the black > magic behind the scene :) ... and if this still doesn't fix the problem, please check the runtime PM state of all HD-audio codec devices and HD-audio controller device. Do all show the runtime-suspended but the power consumption is high? Or is some device blocked? Basically the audio controller corresponding to the dGPU should have chip->bus.keep_power = 0, which allows the runtime PM. This flag is cleared at azx_vx_gpu_bound() only for the dGPU. For the primary GPU, we need to keep the link power unless the notification is done via the audio component (like i915 or amdgpu). I already submitted a patch to enable the audio component for nouveau in the past, but it's ignored, so far. thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
