http://bugzilla.opensuse.org/show_bug.cgi?id=1172901 Bug ID: 1172901 Summary: Kernel Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.2 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: rahmspinat@gmx.ch QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0 Build Identifier: On Lenovo Laptop with Ryzen APU I get the message during boot: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. (dmsg | grep IOMMU) Reproducible: Always Steps to Reproduce: Hardware for reproducing is needed. Actual Results: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. Expected Results: pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40 perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank). The expected result I got when booting Ubuntu 20.04. Seems to be that a certain parameter in kernel config needs to be set. -- You are receiving this mail because: You are on the CC list for the bug.