Dear Takashi,
I am sorry for the late reply.
On 09/19/18 20:44, Takashi Iwai wrote:
On Wed, 19 Sep 2018 13:14:43 +0200, Paul Menzel wrote:
On 09/18/18 23:00, Takashi Iwai wrote:
On Tue, 18 Sep 2018 17:55:15 +0200, Paul Menzel wrote:
With drm-tip (v4.19-rc3-946-g09b295662edd) Linux prints `snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec` to the log.
[…] [ 12.481788] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC671: line_outs=1 (0x21/0x0/0x0/0x0/0x0) type:line [ 12.482536] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1 (0x17/0x0/0x0/0x0/0x0) [ 12.483184] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x14/0x0/0x0/0x0/0x0) [ 12.483737] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 [ 12.484198] snd_hda_codec_realtek hdaudioC0D0: inputs: [ 12.484582] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19 [ 12.485100] snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18 [ 12.485519] snd_hda_codec_realtek hdaudioC0D0: Line=0x1a [ 12.497685] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec [ 12.498311] hdaudio hdaudioC0D2: Unable to bind the codec [ 12.498789] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input6 [ 12.499567] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input7 [ 12.500268] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1f.3/sound/card0/input8 [ 12.501039] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1f.3/sound/card0/input9 [ 12.501683] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10 [ 17.743338] [drm:intel_pch_type [i915]] Found SunrisePoint PCH […]Is that an error or just a notice?
This must be a side-effect of the recent change in i915 to be async probe. This made me checking the corresponding ALSA audio binding code change, and actually found a bug.
Could you try the fix below?
Currently, I am testing Linux 4.20.8, which has your patch included. The problem is still there.
[…]
So it has waited for 10 seconds and timed out. You can check the calls via init_debug option or such to verify it.
I added `initcall_debug` to the Linux kernel command line. Please find the whole log attached.
``` [ 12.486972] snd_hda_intel 0000:00:1f.3: couldn't bind with audio component [ 12.498511] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC671: line_outs=1 (0x21/0x0/0x0/0x0/0x0) type:line [ 12.499251] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1 (0x17/0x0/0x0/0x0/0x0) [ 12.499917] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x14/0x0/0x0/0x0/0x0) [ 12.500568] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 [ 12.501135] snd_hda_codec_realtek hdaudioC0D0: inputs: [ 12.501575] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19 [ 12.502116] snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18 [ 12.502544] snd_hda_codec_realtek hdaudioC0D0: Line=0x1a [ 12.513626] probe of hdaudioC0D0 returned 1 after 15764 usecs [ 12.513749] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec [ 12.514455] probe of hdaudioC0D2 returned 0 after 727 usecs [ 12.514462] hdaudio hdaudioC0D2: Unable to bind the codec ```
[…]
Why the i915 driver gets initialized *so late*?
Maybe, because it’s built as a module?
``` $ grep I915 /boot/config-4.20.8.mx64.245 CONFIG_DRM_I915=m # CONFIG_DRM_I915_ALPHA_SUPPORT is not set CONFIG_DRM_I915_CAPTURE_ERROR=y CONFIG_DRM_I915_COMPRESS_ERROR=y CONFIG_DRM_I915_USERPTR=y # CONFIG_DRM_I915_GVT is not set CONFIG_SND_HDA_I915=y ```
BTW, could you strip the mail to more lightweight? We don't need so much things, just the relevant kernel messages should suffice.
Sure. Hopefully, this message is more to your liking.
Kind regards,
Paul