Public bug reported:
I have a MacBook Air Mid-2013 which doesn't boot with iommu enabled due
to the onboard SATA not working with it, and I see that with KUbuntu
22.04, the new 5.15 kernels have Intel IOMMU enabled by default. So at
the moment I need to add kernel option: intel_iommu=off . The MacBook
was working with default boot options with KUbuntu 22.10 and kernel:
5.13.0-40-generic, but that also didn't have
CONFIG_INTEL_IOMMU_DEFAULT_ON set. I have attached the output of dmesg
when the intel mmu is enabled if that helps. Is there a patch that can
be applied to fix this or perhaps a dmi whitelist to make it so intel
mmu isn't enabled for this model?
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-generic 5.15.0.27.30
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: staples 1028 F.... pulseaudio
/dev/snd/controlC1: staples 1028 F.... pulseaudio
CasperMD5CheckResult: unknown
Date: Wed Apr 27 18:05:16 2022
InstallationDate: Installed on 2021-08-19 (250 days ago)
InstallationMedia: Kubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
MachineType: Apple Inc. MacBookAir6,1
ProcEnviron:
LANGUAGE=en_AU:en
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_AU.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-27-generic
root=UUID=130dde04-85ad-4fcc-919c-1664e646e8df ro quiet splash
intel_pstate=active intel_iommu=off
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.15.0-27-generic N/A
linux-backports-modules-5.15.0-27-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu1
SourcePackage: linux
UpgradeStatus: Upgraded to jammy on 2022-04-26 (0 days ago)
dmi.bios.date: 02/22/2021
dmi.bios.release: 0.1
dmi.bios.vendor: Apple Inc.
dmi.bios.version: 431.0.0.0.0
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-35C1E88140C3E6CF
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir6,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-35C1E88140C3E6CF
dmi.modalias:
dmi:bvnAppleInc.:bvr431.0.0.0.0:bd02/22/2021:br0.1:svnAppleInc.:pnMacBookAir6,1:pvr1.0:rvnAppleInc.:rnMac-35C1E88140C3E6CF:rvrMacBookAir6,1:cvnAppleInc.:ct10:cvrMac-35C1E88140C3E6CF:skuSystemSKU#:
dmi.product.family: MacBook Air
dmi.product.name: MacBookAir6,1
dmi.product.sku: System SKU#
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy
** Attachment added: "dmesg_with_iommu"
https://bugs.launchpad.net/bugs/1970559/+attachment/5584286/+files/dmesg_with_iommu
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https://bugs.launchpad.net/bugs/1970559
Title:
MacBook Air Mid-2013 not booting with iommu enabled
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