Public bug reported:

This bug is to confirm that the Marvell 88SE9230 chipset bug presents
under AMD's IOMMU implementation with Ubuntu 18.04 and the latest HWE
Kernel

This has similar characteristics to 
 - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1089768

System
 - AMD Athlon 200GE
 - Gigabyte GA-B450M-S2H board
 - Marvell 88SE9230 SATA Controller with latest Firmware

Kernel
 - Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17


If I boot the HWE 4.18.0-13-generic Kernel I get the errors reported above

If I boot with "amd_iommu=off" the drives appear to work correctly.
--- 
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  mythfe     1170 F.... pulseaudio
CurrentDesktop: XFCE
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=/dev/mythnew/swap
InstallationDate: Installed on 2016-07-02 (913 days ago)
InstallationMedia: Mythbuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
IwConfig:
 lo        no wireless extensions.
 
 enp9s0    no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. B450M S2H
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-13-generic 
root=/dev/mapper/mythnew-root ro verbose 
drm_kms_helper.edid_firmware=HDMI-A-3:edid/panasonic.edid
ProcVersionSignature: Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17
RelatedPackageVersions:
 linux-restricted-modules-4.18.0-13-generic N/A
 linux-backports-modules-4.18.0-13-generic  N/A
 linux-firmware                             1.173.2
RfKill:
 
Tags:  bionic
Uname: Linux 4.18.0-13-generic x86_64
UpgradeStatus: Upgraded to bionic on 2018-07-27 (158 days ago)
UserGroups: adm cdrom dip lpadmin mythtv nopasswdlogin plugdev sambashare sudo 
video
_MarkForUpload: True
dmi.bios.date: 12/04/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F2c
dmi.board.asset.tag: Default string
dmi.board.name: B450M S2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF2c:bd12/04/2018:svnGigabyteTechnologyCo.,Ltd.:pnB450MS2H:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MS2H:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: B450M S2H
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: apport-collected bionic cosmic

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https://bugs.launchpad.net/bugs/1810239

Title:
  amd_iommu conflict with  Marvell Sata controller

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This bug is to confirm that the Marvell 88SE9230 chipset bug presents
  under AMD's IOMMU implementation with Ubuntu 18.04 and the latest HWE
  Kernel

  This has similar characteristics to 
   - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1089768

  System
   - AMD Athlon 200GE
   - Gigabyte GA-B450M-S2H board
   - Marvell 88SE9230 SATA Controller with latest Firmware

  Kernel
   - Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17

  
  If I boot the HWE 4.18.0-13-generic Kernel I get the errors reported above

  If I boot with "amd_iommu=off" the drives appear to work correctly.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mythfe     1170 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 18.04
  HibernationDevice: RESUME=/dev/mythnew/swap
  InstallationDate: Installed on 2016-07-02 (913 days ago)
  InstallationMedia: Mythbuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  IwConfig:
   lo        no wireless extensions.
   
   enp9s0    no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. B450M S2H
  Package: linux (not installed)
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-13-generic 
root=/dev/mapper/mythnew-root ro verbose 
drm_kms_helper.edid_firmware=HDMI-A-3:edid/panasonic.edid
  ProcVersionSignature: Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-13-generic N/A
   linux-backports-modules-4.18.0-13-generic  N/A
   linux-firmware                             1.173.2
  RfKill:
   
  Tags:  bionic
  Uname: Linux 4.18.0-13-generic x86_64
  UpgradeStatus: Upgraded to bionic on 2018-07-27 (158 days ago)
  UserGroups: adm cdrom dip lpadmin mythtv nopasswdlogin plugdev sambashare 
sudo video
  _MarkForUpload: True
  dmi.bios.date: 12/04/2018
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F2c
  dmi.board.asset.tag: Default string
  dmi.board.name: B450M S2H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF2c:bd12/04/2018:svnGigabyteTechnologyCo.,Ltd.:pnB450MS2H:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MS2H:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: Default string
  dmi.product.name: B450M S2H
  dmi.product.sku: Default string
  dmi.product.version: Default string
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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