Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE
Date	2025-11-26 08:50 +0100
Message-ID	<LVirL-fPCd-1@gated-at.bofh.it> (permalink)
References	(7 earlier) <LTbNL-enn6-3@gated-at.bofh.it> <LpPFo-bJIJ-1@gated-at.bofh.it> <LUNnX-fuBl-3@gated-at.bofh.it> <LpPFo-bJIJ-1@gated-at.bofh.it> <LUNnX-fuBl-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Francesco,

On Mon, Nov 24, 2025 at 11:25:51PM +0100, Francesco Poli wrote:
> On Thu, 20 Nov 2025 13:15:58 +0100 Salvatore Bonaccorso wrote:
> 
> [...]
> > On Sun, Nov 16, 2025 at 05:43:05PM +0100, Salvatore Bonaccorso wrote:
> > > Hi,
> > > 
> > > On Wed, Nov 12, 2025 at 10:44:00PM +0100, Francesco Poli wrote:
> [...]
> > > > OK, looking forward to receiving further feedback.
> > > > 
> > > > As always, thank you so much for your kind assistance!   :-)
> > > 
> > > I keep the answer short after we discussed it as promissed.
> > > 
> > > You can pass in as well other PCI devices for instance, say maybe pass
> > > a USB controller in, or a NIC. But really if you never used that for
> > > your usecase, our proposal is now to just keep IOMMU disabled (either
> > > via BIOS setting, or via kernel command line parameter) and consider
> > > this (even not solved in the most optimal way) "done".
> > 
> > And we agreed in yesterday's meeting since we have a workaround here,
> > and no further ideas to move on and close the bug, which I'm doing
> > now.
> 
> OK, I'll keep VT-d disabled in the UEFI configuration, for the time
> being.
> 
> Please come back to me, in case some new fact arises in the future.
> Thank you so much!

Sure if we do no forget or get reminded of this particular issue.

What you might try, time permitting is when you update to a new
(major) upstream version re-try with IOMMU enabled and see if things
get better.

Regards,
Salvatore

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Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE "Francesco Poli (wintermute)" <invernomuto@paranoici.org> - 2025-08-31 14:50 +0200
  Processed: Re: Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel  audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0]  ... non-zero reserved fields in PTE "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-09-06 14:00 +0200
  Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-09-06 14:00 +0200
    Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-09-07 13:20 +0200
      Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-09-29 23:10 +0200
  Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-05 18:50 +0200
  Processed: Re: Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel  audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0]  ... non-zero reserved fields in PTE "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-10-05 21:00 +0200
  Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-05 21:30 +0200
    Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-10-11 17:30 +0200
      Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-11 19:00 +0200
        Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-10-17 15:50 +0200
          Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-18 13:20 +0200
            Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-10-25 17:00 +0200
              Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-25 17:40 +0200
                Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-10-26 14:10 +0100
              Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-10-26 23:40 +0100
                Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-11-06 00:00 +0100
                Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-11-11 13:50 +0100
                Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-11-12 22:50 +0100
                Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-11-16 17:50 +0100
  Processed: Re: Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel  audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0]  ... non-zero reserved fields in PTE "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-10-17 15:50 +0200
  Processed: Re: Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel  audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0]  ... non-zero reserved fields in PTE "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-10-25 17:00 +0200
  Bug#1112627: marked as done (linux-image-6.16.3+deb14-amd64:  Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device  [00:1b.0] ... non-zero reserved fields in PTE) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-11-20 13:20 +0100
  Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Francesco Poli <invernomuto@paranoici.org> - 2025-11-24 23:40 +0100
    Bug#1112627: linux-image-6.16.3+deb14-amd64: Intel audio no longer works: DMAR: [DMA Write NO_PASID] Request device [00:1b.0] ... non-zero reserved fields in PTE Salvatore Bonaccorso <carnil@debian.org> - 2025-11-26 08:50 +0100

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