linux-kernel - Re: [BUG] hda/tas2781: ASUS ROG Xbox Ally X audio issues with default firmware

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Message-ID: 
 <CAGwozwGsSFj6P7_QtiR2CAA5tEBufLaQO4qRLQ5N2_HiddcB4A@mail.gmail.com>
Date: Thu, 4 Dec 2025 22:28:17 +0100
From: Antheas Kapenekakis <lkml@...heas.dev>
To: Matthew Schwartz <matthew.schwartz@...ux.dev>
Cc: Baojun Xu <baojun.xu@...com>, Shenghao Ding <shenghao-ding@...com>,
 linux-sound@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, tiwai@...e.de
Subject: Re: [BUG] hda/tas2781: ASUS ROG Xbox Ally X audio issues with default
 firmware

On Thu, 4 Dec 2025 at 02:47, Matthew Schwartz
<matthew.schwartz@...ux.dev> wrote:
>
> Hello,
>
> I have an ASUS ROG Xbox Ally X which uses hda/tas2781 for the speaker amplifiers. I am splitting this out into a new thread based on the suggestion from [1] to fix the remaining issues with the device's audio separately.
>
> I built a kernel from tags/sound-6.19-rc1 in tiwai/sound and included [2], which seemed potentially relevant to the issue that I describe below.
>
> By default, my system loads /usr/lib/firmware/ti/audio/tas2781/TAS2XXX13840.bin.zst. With this firmware file, any sound above the 70% volume limit range starts to become distorted and frequently drop out from either one or both speakers. I've included an alsa-info.sh report with this default firmware at [3].
>
> If I run sudo mv /usr/lib/firmware/ti/audio/tas2781/TAS2XXX13841.bin.zst /usr/lib/firmware/ti/audio/tas2781/TAS2XXX13840.bin.zst and force the other firmware file for Xbox Ally models, my speakers work up to 100% without any of the drop outs I experience on the default firmware. I've included an alsa-info.sh report with this renamed firmware at [4].
>
> I took an acpidump at [5] and extracted the dsdt table at [6]. Please let me know if there's any additional information I can provide from the device to further debug the sound issues with the default selected firmware.
>
> Thanks,
> Matt
>
> [1]: https://lore.kernel.org/linux-sound/87zf8jesp0.wl-tiwai@suse.de/
> [2]: https://lore.kernel.org/all/20251126141434.11110-1-baojun.xu@ti.com/
> [3]: https://alsa-project.org/db/?f=840337cab11f6aa70cf48b15d55ac45e4027ff41
> [4]: https://alsa-project.org/db/?f=6e482f72765d89520ea171f15641228bcadefcf0
> [5]: https://gist.githubusercontent.com/matte-schwartz/d7ff3c857b45cca197f3d3adc16df0bc/raw/2e3267b8d1a9d619ecd8157e4da426be756b6497/acpidump.txt
> [6]: https://gist.githubusercontent.com/matte-schwartz/4042dcd3779c3738af60536a9d4050d6/raw/5227717c6d40a2dc4012b95f7fefc6cd50ba784d/dsdt.dsl
>

Related to this I have a follow up patch that fixes the audio jack on
the Xbox Allies which regressed with the initial quirk applied. But it
did not seem to help here. I will send it soon-


Antheas