Re: [BUG] ASoC/AMD ACP70/RT721: ASUS TUF Gaming A14 FA401EA speakers silent and headphone jack buzzes on playback

[Cristian Timohi]

Hi Jack,

Done.

I completely removed the "Update preset for all functions" patch and
rebuilt the RT721 module. The test kernel now contains only:

ASoC: rt721-sdca: Adjust latency control to fix no-sound issue
a20afec40ea1012659861e58374c1bcde2e18a43

I attached the four requested register dumps:

* speaker-sdw.txt
* speaker-mbq.txt
* headphone-sdw.txt
* headphone-mbq.txt

For the speaker dumps, I used direct playback on:

hw:CARD=amdsoundwire,DEV=2

For the headphone dumps, headphones were connected and playback was running on:

plughw:CARD=amdsoundwire,DEV=0

Playback was kept running continuously until both the normal SDW and
MBQ register dumps had completed.

The two dumps for each scenario were captured immediately one after
the other while playback was still active.

Please let me know if you would like any additional register dumps or tests.

Thanks,
Cristian

On Wed, Sep 9, 2026 at 11:21 AM Jack Yu <jack.yu@xxxxxxxxxxx> wrote:
>
> Hi Cristian,
>
> Please don't use "Update preset for all functions" patch and still keep below patch
>
> ASoC: rt721-sdca: Adjust latency control to fix no-sound issue
> a20afec40ea1012659861e58374c1bcde2e18a43
>
> after above steps, please dump the registers in below path during playback for both scenarios (speaker playback and headphone playback).
>
> /sys/kernel/debug/regmap/<sdw addr>/registers
> /sys/kernel/debug/regmap/<sdw MBQ-addr>/registers
>
> Our FAE will also try to borrow devices from ASUS for further debugging.
>
> Regards,
> Jack
>
> > -----Original Message-----
> > From: Cristian Timohi <cristiantimohi@xxxxxxxxx>
> > Sent: Wednesday, September 9, 2026 4:50 AM
> > To: Jack Yu <jack.yu@xxxxxxxxxxx>
> > Cc: Syed Saba Kareem <syed.sabakareem@xxxxxxx>; Mukunda,Vijendar
> > <vijendar.mukunda@xxxxxxx>; Flove(HsinFu) <flove@xxxxxxxxxxx>;
> > venkataprasad.potturu@xxxxxxx; linux-sound@xxxxxxxxxxxxxxx; Oder Chiou
> > <oder_chiou@xxxxxxxxxxx>; vkoul@xxxxxxxxxx;
> > yung-chuan.liao@xxxxxxxxxxxxxxx; pierre-louis.bossart@xxxxxxxxx;
> > broonie@xxxxxxxxxx; lgirdwood@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> > Dommati, Sunil-kumar <Sunil-kumar.Dommati@xxxxxxx>; Fish690103
> > <fish690103@xxxxxxxxxxx>; Mike Lin (林曉能) <mikelin@xxxxxxxxxxx>
> > Subject: Re: [BUG] ASoC/AMD ACP70/RT721: ASUS TUF Gaming A14 FA401EA
> > speakers silent and headphone jack buzzes on playback
> >
> >
> > External mail : This email originated from outside the organization. Do not
> > reply, click links, or open attachments unless you recognize the sender and
> > know the content is safe.
> >
> >
> >
> > Hi Jack, Vijendar, all,
> >
> > I tested both Realtek changes on the ASUS TUF Gaming A14 FA401EA (BIOS
> > FA401EA.304).
> >
> > For reference, audio works correctly under the factory-installed Windows 11 on
> > this exact hardware: both the internal speakers and the
> > 3.5 mm headphone output worked normally.
> >
> > Test kernel:
> >
> > current torvalds/linux master
> > HEAD before the test: 5acbae5f7
> > a20afec40ea1 cherry-picked
> > local kernel: 7.3.0-rc2-fa401ea-rt721+
> > Speaker fix: a20afec40ea1
> > ================================
> >
> > I first tested only:
> >
> > ASoC: rt721-sdca: Adjust latency control to fix no-sound issue
> > a20afec40ea1012659861e58374c1bcde2e18a43
> >
> > Unfortunately, the internal speakers remain completely silent.
> >
> > Direct ALSA playback on the SmartAmp PCM opens and runs normally:
> >
> > speaker-test
> > -D hw=amdsoundwire,DEV=2
> > -c 2 -r 48000 -F S16_LE -t wav
> >
> > There are no relevant RT721/SoundWire errors during playback, but there is no
> > physical speaker output.
> >
> > So a20afec40ea1 alone does not fix the speaker issue on this FA401EA unit.
> >
> > "Update preset for all functions" patch
> > ===========================================
> >
> > I then applied Jack's:
> >
> > 0001-ASoC-rt721-sdca-Update-preset-for-all-functions.patch
> >
> > The patch applies cleanly on top of the above kernel.
> >
> > With the patch unmodified, however, both playback paths fail to open with
> > -ENODATA.
> >
> > The RT721 remains attached:
> >
> > sdw:0:1:025d:0721:01: Attached
> >
> > but dmesg reports:
> >
> > rt721-sdca sdw:0:1:025d:0721:01: Defer on undeferrable control: 5810100
> > rt721-sdca sdw:0:1:025d:0721:01: Defer on undeferrable control: 5810100
> > rt721-sdca sdw:0:1:025d:0721:01: ASoC error (-61): at
> > snd_soc_pcm_component_pm_runtime_get() on sdw:0:1:025d:0721:01
> > SDW1-PIN1-PLAYBACK-SmartAmp: ASoC error (-61): at __soc_pcm_open() on
> > SDW1-PIN1-PLAYBACK-SmartAmp
> >
> > The same runtime PM error also occurs for the SimpleJack playback path.
> >
> > I traced this to the new write in rt721_sdca_jack_preset():
> >
> > regmap_write(rt721->mbq_regmap, 0x5810100, 0x8021);
> >
> > Experimental 0x5810100 -> 0x5810000 test
> > ============================================
> >
> > As a local experiment only, I changed that single write from:
> >
> > regmap_write(rt721->mbq_regmap, 0x5810100, 0x8021);
> >
> > to:
> >
> > regmap_write(rt721->mbq_regmap, 0x5810000, 0x8021);
> >
> > This restores normal PCM opening. The -61 / "Defer on undeferrable
> > control: 5810100" messages disappear completely.
> >
> > With this experimental change and the rest of the preset patch unchanged:
> >
> > Internal speakers:
> >
> > PCM opens and streams normally
> > still completely silent
> >
> > 3.5 mm headphones:
> >
> > PCM opens and streams normally
> > no intelligible audio is produced
> > importantly, the previous buzzing noise is now gone
> >
> > I also repeated the zero-PCM test:
> >
> > timeout 10s bash -c '
> > dd if=/dev/zero bs=192000 2>/dev/null |
> > aplay -D hw=amdsoundwire,DEV=0
> > -t raw -f S16_LE -r 48000 -c 2
> > '
> >
> > Previously this caused continuous buzzing while the playback path was active.
> >
> > With the new preset patch plus the experimental 0x5810100 -> 0x5810000
> > change, the headphone output is completely silent during zero-PCM
> > playback: no buzz, but also no audio during normal playback.
> >
> > Summary
> >
> > a20afec40ea1 only:
> >
> > speakers: silent
> > headphone behavior unchanged
> >
> > a20afec40ea1 + preset patch as provided:
> >
> > RT721 stays Attached
> > playback cannot open
> > 0x5810100 causes -ENODATA / runtime PM failure
> >
> > a20afec40ea1 + preset patch + experimental 0x5810100 -> 0x5810000:
> >
> > PCM playback works again
> > speakers remain silent
> > headphones remain silent
> > previous headphone buzz is eliminated
> > no relevant RT721/SoundWire errors in dmesg
> >
> > It therefore looks like the new preset does affect the analog headphone state
> > on this hardware, since it removes the buzzing, but the codec still does not
> > produce actual audio.
> >
> > Please let me know if you would like me to test different register values or
> > provide register/debug dumps from this state.
> >
> > Bugzilla:
> > https://bugzilla.kernel.org/show_bug.cgi?id=221958
> >
> > Thanks,
> > Cristian
> >
> > On Fri, Sep 4, 2026 at 9:01 AM Jack Yu <jack.yu@xxxxxxxxxxx> wrote:
> > >
> > > Loop more
> > >
> > > Hi Mukunda,
> > >
> > > Regarding to speakers silent issue, a patch has been merged as below
> > >
> > > [1/1] ASoC: rt721-sdca: Adjust latency control to fix no-sound issue
> > >       https://git.kernel.org/broonie/sound/c/a20afec40ea1
> > >
> > > and for headphone buzzes issue on playback, could you merge the attached
> > patch and check if buzzes issue can be fixed?
> > >
> > > Regards,
> > > Jack
> > >
> > > > -----Original Message-----
> > > > From: Syed Saba Kareem <syed.sabakareem@xxxxxxx>
> > > > Sent: Thursday, September 3, 2026 4:41 PM
> > > > To: Mukunda,Vijendar <vijendar.mukunda@xxxxxxx>; Cristian Timohi
> > > > <cristiantimohi@xxxxxxxxx>; Jack Yu <jack.yu@xxxxxxxxxxx>;
> > > > Flove(HsinFu) <flove@xxxxxxxxxxx>
> > > > Cc: venkataprasad.potturu@xxxxxxx; linux-sound@xxxxxxxxxxxxxxx; Oder
> > > > Chiou <oder_chiou@xxxxxxxxxxx>; vkoul@xxxxxxxxxx;
> > > > yung-chuan.liao@xxxxxxxxxxxxxxx; pierre-louis.bossart@xxxxxxxxx;
> > > > broonie@xxxxxxxxxx; lgirdwood@xxxxxxxxx;
> > > > linux-kernel@xxxxxxxxxxxxxxx; Dommati, Sunil-kumar
> > > > <Sunil-kumar.Dommati@xxxxxxx>
> > > > Subject: Re: [BUG] ASoC/AMD ACP70/RT721: ASUS TUF Gaming A14
> > FA401EA
> > > > speakers silent and headphone jack buzzes on playback
> > > >
> > > >
> > > > External mail : This email originated from outside the organization.
> > > > Do not reply, click links, or open attachments unless you recognize
> > > > the sender and know the content is safe.
> > > >
> > > >
> > > >
> > > > On 9/3/26 11:11, Mukunda,Vijendar wrote:
> > > > >
> > > > >
> > > > > On 9/2/26 22:13, Cristian Timohi wrote:
> > > > >> [You don't often get email from cristiantimohi@xxxxxxxxx. Learn
> > > > >> why this is important at
> > > > >> https://aka.ms/LearnAboutSenderIdentification ]
> > > > >>
> > > > >> ****
> > > > >> Resending as plain text, as the previous message was rejected by
> > > > >> the vger.kernel.org mailing list due to an HTML MIME part.
> > > > >> Apologies to recipients who received the previous copy directly.
> > > > >> ***
> > > > >>
> > > > >> Hello,
> > > > >>
> > > > >> I'm reporting an audio issue on an ASUS TUF Gaming A14 FA401EA
> > > > >> (Ryzen AI MAX+ 392) using AMD ACP70 SoundWire and a Realtek RT721
> > > > >> SDCA codec.
> > > > >>
> > > > >> I have reproduced the issue on a clean current vanilla 7.3-rc1
> > > > >> kernel, so this does not appear to be Fedora-, PipeWire-, or
> > > > >> desktop-specific.
> > > > >>
> > > > >> Current clean test environment
> > > > >> ==============================
> > > > >>
> > > > >> Distribution:
> > > > >>      Fedora 45
> > > > >>
> > > > >> Kernel:
> > > > >>      7.3.0-0.rc1.260901.786262be.417.vanilla.fc45.x86_64
> > > > >>
> > > > >> snd_acp_sdw_legacy_mach quirk:
> > > > >>      -1
> > > > >>
> > > > >> There are no remaining custom snd_acp_sdw_legacy_mach/modprobe
> > > > >> overrides in the current reproduction environment.
> > > > >>
> > > > >> Hardware
> > > > >> ========
> > > > >>
> > > > >> Laptop:
> > > > >>      ASUS TUF Gaming A14 FA401EA
> > > > >>
> > > > >> DMI product:
> > > > >>      TUF Gaming A14 FA401EA
> > > > >>
> > > > >> DMI board:
> > > > >>      FA401EA
> > > > >>
> > > > >> BIOS:
> > > > >>      FA401EA.304
> > > > >>
> > > > >> CPU/APU:
> > > > >>      AMD Ryzen AI MAX+ 392
> > > > >>
> > > > >> Audio:
> > > > >>      AMD ACP70 SoundWire
> > > > >>      Realtek RT721 SDCA
> > > > >>
> > > > >> The SoundWire bus exposes one peripheral:
> > > > >>
> > > > >>      sdw:0:1:025d:0721:01: Attached
> > > > >>
> > > > >> I do not see TAS2783 devices enumerated on this unit.
> > > > >>
> > > > >> Known-good cases
> > > > >> ================
> > > > >>
> > > > >> The laptop's built-in speakers worked correctly under the
> > > > >> factory-installed Windows 11.
> > > > >>
> > > > >> USB audio also works correctly under Linux. I tested Corsair
> > > > >> Virtuoso USB headphones and normal audio playback works.
> > > > >>
> > > > >> Therefore the issue appears specific to the internal AMD ACP70 ->
> > > > >> SoundWire -> RT721 audio path.
> > > > >>
> > > > >> Actual behavior
> > > > >> ===============
> > > > >>
> > > > >> Internal speakers:
> > > > >>      Completely silent.
> > > > >>
> > > > >> 3.5 mm headphone jack:
> > > > >>      No intelligible audio is produced.
> > > > >>      When the analog audio path becomes active, the headphones
> > > > produce
> > > > >>      a continuous buzzing noise. The buzz stops when the
> > playback/path
> > > > >>      is deactivated.
> > > > >>
> > > > >> Opening the desktop sound control panel can also trigger the
> > > > >> buzzing while the analog audio path is active.
> > > > >>
> > > > >> ALSA playback devices
> > > > >> =====================
> > > > >>
> > > > >> The amd-soundwire card exposes:
> > > > >>
> > > > >>      device 0:
> > > > >>      SDW1-PIN0-PLAYBACK-SimpleJack rt721-sdca-aif1-0
> > > > >>
> > > > >>      device 2:
> > > > >>      SDW1-PIN1-PLAYBACK-SmartAmp rt721-sdca-aif2-2
> > > > >>
> > > > >> Direct ALSA reproduction
> > > > >> ========================
> > > > >>
> > > > >> Internal speakers:
> > > > >>
> > > > >>      speaker-test -D hw:CARD=amdsoundwire,DEV=2 \
> > > > >>          -c 2 -r 48000 -F S16_LE -t wav
> > > > >>
> > > > >> The PCM stream starts normally without an ALSA error, but there
> > > > >> is no physical speaker output.
> > > > >>
> > > > >> Analog headphones:
> > > > >>
> > > > >>      aplay -D plughw:CARD=amdsoundwire,DEV=0 \
> > > > >>          /usr/share/sounds/alsa/Front_Left.wav
> > > > >>
> > > > >> No speech is heard. The headphone output only buzzes while the
> > > > >> audio path is active.
> > > > >>
> > > > >> Zero-PCM test
> > > > >> =============
> > > > >>
> > > > >> I also sent only zero-valued PCM samples:
> > > > >>
> > > > >>      timeout 10s bash -c '
> > > > >>      dd if=/dev/zero bs=192000 2>/dev/null |
> > > > >>      aplay -D hw:CARD=amdsoundwire,DEV=0 \
> > > > >>            -t raw -f S16_LE -r 48000 -c 2
> > > > >>      '
> > > > >>
> > > > >> The headphone jack still buzzes while the zero-PCM stream is active.
> > > > >>
> > > > >> Therefore the buzz does not appear to represent corrupted
> > > > >> application audio; merely activating playback is sufficient to produce it.
> > > > >>
> > > > >> Mixer / UCM
> > > > >> ===========
> > > > >>
> > > > >> Speaker:
> > > > >>
> > > > >>      Speaker Switch = on
> > > > >>      rt721 FU06 Playback Volume = 87,87
> > > > >>
> > > > >> Headphones:
> > > > >>
> > > > >>      Headphone Switch = on
> > > > >>      rt721 FU05 Playback Volume = 87,87
> > > > >>
> > > > >> I also explicitly enabled the corresponding Speaker and
> > > > >> Headphones UCM devices. This did not change the result.
> > > > >>
> > > > >> ASoC DAPM during speaker playback
> > > > >> =================================
> > > > >>
> > > > >> I inspected debugfs while speaker-test on the SmartAmp PCM was
> > > > >> actively running.
> > > > >>
> > > > >> All relevant widgets were ON:
> > > > >>
> > > > >>      Speaker: On
> > > > >>      rt721 DP3 Speaker Playback: On
> > > > >>          stream DP3 Speaker Playback active
> > > > >>      rt721 DP3RX: On
> > > > >>      rt721 FU 21: On
> > > > >>      rt721 FU 23: On
> > > > >>      rt721 PDE 41: On
> > > > >>      rt721 SPK: On
> > > > >>
> > > > >> The DAPM graph therefore appears to activate the entire expected
> > > > >> speaker path:
> > > > >>
> > > > >>      DP3 Speaker Playback
> > > > >>        -> DP3RX
> > > > >>        -> FU 21 / FU 23
> > > > >>        -> SPK
> > > > >>        -> Speaker
> > > > >>
> > > > >> but the physical speakers remain silent.
> > > > >>
> > > > >> Kernel messages
> > > > >> ===============
> > > > >>
> > > > >> RT721 attaches successfully.
> > > > >>
> > > > >> I see:
> > > > >>
> > > > >>      rt721-sdca sdw:0:1:025d:0721:01:
> > > > >>      Driver needs fixing: Unsorted reg_defaults, sorting the copy
> > > > >>
> > > > >> On an earlier 7.2.x boot I also observed:
> > > > >>
> > > > >>      soundwire sdw:0:1:025d:0721:01:
> > > > >>      PARITY error detected before INT mask is enabled
> > > > >>
> > > > >> I did not observe additional SoundWire/RT721 errors when starting
> > > > >> or stopping playback.
> > > > >>
> > > > >> Kernels tested
> > > > >> ==============
> > > > >>
> > > > >> The same issue was reproduced on:
> > > > >>
> > > > >>      Fedora 44:
> > > > >>      7.2.2-300.fc44.x86_64
> > > > >>
> > > > >>      Fedora 45:
> > > > >>      7.2.2-300.fc45.x86_64
> > > > >>
> > > > >>      Vanilla mainline:
> > > > >>      7.3.0-0.rc1.260901.786262be.417.vanilla.fc45.x86_64
> > > > >>
> > > > >>      CachyOS kernel:
> > > > >>      7.2.2-cachyos1.fc45.x86_64
> > > > >>
> > > > >> The current reproduction is on the clean vanilla 7.3-rc1 kernel.
> > > > >>
> > > > >> Previous experiments
> > > > >> ====================
> > > > >>
> > > > >> Before testing clean mainline, I also built a Fedora 7.2.2 kernel
> > > > >> locally and experimentally changed the RT721 speaker endpoint in:
> > > > >>
> > > > >>      sound/soc/amd/acp/amd-acp70-acpi-match.c
> > > > >>
> > > > >> from:
> > > > >>
> > > > >>      .aggregated = 0
> > > > >>      .group_id = 0
> > > > >>
> > > > >> to:
> > > > >>
> > > > >>      .aggregated = 1
> > > > >>      .group_id = 1
> > > > >>
> > > > >> This did not change the behavior.
> > > > >>
> > > > >> I also tested that custom kernel with:
> > > > >>
> > > > >>      options snd_acp_sdw_legacy_mach quirk=32768
> > > > >>
> > > > >> The kernel reported:
> > > > >>
> > > > >>      amd_sdw amd_sdw: Overriding quirk 0x1 => 0x8000
> > > > >>
> > > > >> but there was still no speaker output.
> > > > >>
> > > > >> Those experimental overrides have been removed. The current
> > > > >> vanilla
> > > > >> 7.3-rc1 reproduction uses quirk=-1 and no custom modprobe options.
> > > > >>
> > > > >> Question
> > > > >> ========
> > > > >>
> > > > >> Could this FA401EA variant require a different RT721-only
> > > > >> topology,
> > > > >> ACP70 configuration, SoundWire setup, or codec initialization quirk?
> > > > >>
> > > > >> The fact that all-zero PCM causes the analog headphone output to
> > > > >> buzz while the stream is active may be particularly relevant.
> > > > >>
> > > > >> I'm happy to test patches or provide register/debug output.
> > > > >>
> > > > >> I can also provide full alsa-info, kernel journal, lspci output,
> > > > >> SoundWire sysfs state, mixer state, and DAPM debugfs output.
> > > > >
> > > > > Could you please log a Bugzilla ticket adding ACPI dump, dmi
> > > > > information and along with alsa info output?
> > > > ++RTK Team
> > > >
> > > > Similar kind of issue reported in another mail thread, realtek is working on
> > it.
> > > >
> > > > @jack could you please comment on it.
> > > >
> > > > >>
> > > > >> Thank you.
> > > > >> Cristian
> > > > >

Attachment: rt721-regdump.zip
Description: Zip archive