Actually, you helped more than you think. :-) So I did a little reading about the IOMMU issue and the problem is that IOMMU itself is not the problem. It just shows the real problem (I think this is not new news, really.) Anyway, the problem appears to be the xhci_hcd device driver that I cannot disable. I still don't understand how that impacts the ethernet device driver, though.
I added the iommu=soft option to the boot menu and it seems that the kernel is more lenient in treating the xhci_hcd mis-behavior and things seem to work fine now. So I guess I'll have to make option permanent for the boot image. That means I need to do that for every kernel update. Yuck. Thanks so much. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1447053 Title: IO_PAGE_FAULT Status in linux package in Ubuntu: Confirmed Bug description: Since a couple of weeks I'm experiencing a problem with my motherboard. For some reason the network goes randomly offline and I get a error messages about AMD-Vi. [ 6462.248434] AMD-Vi: Event logged [IO_PAGE_FAULT device=04:00.0 domain=0x0019 address=0x0000000000003000 flags=0x0050] I didn't changed anything except for the internet modem is changed and I installed updates as I always do. When using google I see there are more people with this problem exactly the same motherboard, I find this strange because my pc is almost a year old and I never had this problem. Could it be a problem in the kernel of *ubuntu 14.04? ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-49-generic 3.13.0-49.83 ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17 Uname: Linux 3.13.0-49-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: allard 2282 F.... pulseaudio allard 2467 F.... pulseaudio /dev/snd/controlC0: allard 2282 F.... pulseaudio allard 2467 F.... pulseaudio CurrentDesktop: KDE Date: Wed Apr 22 11:34:46 2015 HibernationDevice: RESUME=UUID=96633d31-18c6-4b01-b756-f5f919c43fb4 InstallationDate: Installed on 2015-03-27 (25 days ago) InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: System manufacturer System Product Name ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-49-generic root=UUID=2c77ade3-e2ea-4d88-94d6-e131053f8ac8 ro quiet splash RelatedPackageVersions: linux-restricted-modules-3.13.0-49-generic N/A linux-backports-modules-3.13.0-49-generic N/A linux-firmware 1.127.11 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/02/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2204 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: A88XM-A dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2204:bd04/02/2015:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnA88XM-A:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1447053/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
