Public bug reported:
Intel iommu was turned on by default in mainline build v5.15.5 or jammy
-generic kernel 5.15.0-12.12. This would breaks IPU6 leaving error
messages:
[ 6.681241] intel-ipu6 intel-ipu: IPU driver version 1.0
[ 7.056166] DMAR: DRHD: handling fault status reg 2
[ 7.056169] DMAR: [DMA Read NO_PASID] Request device [00:05.0] fault addr
0x11b1d4000 [fault reason 0x06] PTE Read access is not set
[ 7.056421] DMAR: DRHD: handling fault status reg 2
[ 7.056422] DMAR: [DMA Read NO_PASID] Request device [00:05.0] fault addr
0x3fffffff000 [fault reason 0x06] PTE Read access is not set
[ 7.056456] intel-ipu6-psys intel-ipu6-psys0: pkg_dir entry count:8
[ 7.056637] intel-ipu6-psys intel-ipu6-psys0: psys probe minor: 0
[ 7.056652] DMAR: DRHD: handling fault status reg 2
[ 7.056653] DMAR: [DMA Read NO_PASID] Request device [00:05.0] fault addr
0x3fffffff000 [fault reason 0x06] PTE Read access is not set
[ 7.056882] DMAR: DRHD: handling fault status reg 2
[ 8.197149] intel-ipu6-isys intel-ipu6-isys0: isys port open ready failed -16
[ 8.197157] intel-ipu6-isys intel-ipu6-isys0: Device close failure: -16
[ 10.201677] intel-ipu6-isys intel-ipu6-isys0: Device release time out -16
[ 10.240523] intel-ipu6-isys intel-ipu6-isys0: Clearing old context
...
This can be worked-around with intel_iommu=off.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: ihv-intel oem-camera
** Attachment added: "dmesg.5.15.0-2017-generic.TRIBUTO.BIOS-0.2.7"
https://bugs.launchpad.net/bugs/1958004/+attachment/5554428/+files/dmesg.5.15.0-2017-generic.TRIBUTO.BIOS-0.2.7
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-firmware (Ubuntu)
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https://bugs.launchpad.net/bugs/1958004
Title:
intel_iommu breaks Intel IPU6 camera: isys port open ready failed -16
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