Hallo Jürgen,

hier nochmal zwei Parameter für den Kernel:

"Oddly enough, even though I have an almost identical setup (same
motherboard, FX8350 processor), enabling the IOMMU didn't make any
difference for me. Still no USB, networking, etc.

What did help, though, was adding "iommu=soft" to the kernel command
line. Now it all works fine (except that, for some strange reason, my
Logitech Zone Touch Mouse doesn't work)."

und
"I have the same FX8350 running on a Gigabyte 990FXA-UD3 using OpenSuse
13.1. The solution that worked for me was to edit the bootloader using
YAST, the default selection (or the selection you are using to load
OpenSuse 13.1 in my case), "iommu=pt" after "quiet showopts".

For example:


"resume=/dev/disk/by-id/ata-Hitachi_HDS721010CLA332_JP2921HQ1076NA-part2
splash=silent quiet showopts iommu=pt"

Now all my USB ports 2.0 and 3.0 are working and my internet networking
is working too!. Also make sure IOMMU is enabled in BIOS. I hope this
helps someone else."

Also probir mal als Kernelparameter:

iommu=soft

oder
showopts iommu=pt

Viele Grüße

Holger


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