[SOLVED] AMD-VI: IOMMU event log overflow

[Aquino.R]

Hello all !

My machine is based on an old Gigabyte 907A-DS3P FX mobo. After upgrading Zorin to the latest version, system somehow freezes at boot up giving me the following sequence errors:

 [   6.900610] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.901639] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.902664] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.903689] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.904694] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.923741] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.960783] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    6.997851] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    7.034894] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    7.071962] xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xbe0e2880 flags=0x0000]
[    7.109207] amd_iommu_int_thread: 1798 callbacks suppressed
[    7.109209] AMD-Vi: IOMMU event log overflow

The system continue to boot just after most of the time.
I've already tried to add "iommu=soft" or "iommu=pt" into /etc/default/grub, after disabling or not IOMMU in the BIOS. All these brought no results. The system still shows the sequence of errors. Anyone could help me?

Thanks in advance

[Aravisian]

You can try adding the grub parameter iommu=soft or if that does not work, try iommu=pt.
Guide on how to add a grub parameter:

[HOW TO] add a grub parameter

There may be times that a user must add a specialized grub parameter in order to overcome an issue. The purpose of this guide is not to provide parameters, as that would be a case by case basis. It is to provide a guide on how to add one. To add a parameter, in a terminal (TTY, Recovery Prompt or Terminal Emulator) run: sudo nano /etc/default/grub Arrow key down to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and place your parameter within the quotation tags. For example if you are adding th…

[Aquino.R]

Oh, thanks! That solved the problem. I've already tried to add the iommu entry in /etc/default/grub, but it has not worked. Perhaps I've missed some step in your How-to.