On 02/14/2017 02:12 PM, Nick LeRoy wrote:
All,
I have a couple machines running AMD FX CPUs. Both are running Gigabyte motherboards. One is a GA-990FXA-UD5 with 32G of RAM and an FX(tm)-8350 (8 core). The second is a 970A-UD3P with 32G of RAM and an FX(tm)-6300 (6 core). The 990FXA uses the 990FX northbridge, the 970A uses the 970 northbridge. Both use the SB950 southbridge.
I upgraded the 970A machine from Leap 42.1 to 42.2 several weeks ago, and immediately started having problems with Google Chrome / chromium crashes, as well as a lot of "bash: fork: retry: No child processes" from shells. I tried upgrading to several different kernels (all from OBS), with similar results. I also tried playing with the IOMMU settings, both in BIOS and in the kernel parameters. The problems persisted (and still do).
Last night, I upgraded the 990FX box, and am now having the same problems. I was hoping the the 990FX chipset would be different enough, but apparently it's not.
I am running the same GA-990FXA-UD5 with the same CPU but with 16GB of memory. I did a "trial" install of Leap 42.2. I'm still running 13.2 with vanilla kernels. Just to get it installed I had to disable the IOMMU in the bios and set my memory to 4gb. "kernel command line mem=4096M". The reason was that the kernel version in the dist package has an AMD IOMMU bug. I was getting IOMMU page faults all over the place. But if the IOMMU was not enabled and running more than 4GB, the I/O devices have to use Dual Address Cycles (DAC) to access memory above that 4GB. And I have yet to see a MB that supports DAC reliably. So I was having major issues just getting everything installed. But once I got up and running with the latest kernel, I was then able to turn the IOMMU back on and run with the full 16GB of memory. I'm still running 13.2 on it now though. Regards Mark -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org