On Tue, Mar 31, 2020 at 4:06 PM Brandon Nielsen <niels...@jetfuse.net> wrote:
> Recently I've had cause to run memtest on some relatively modern systems > (Haswell, Haswell refresh, and Kaby Lake R). On all three systems the > memtest86+ provided with the Fedora Workstation Live media failed. > > On the Haswell and Haswell refresh machines it froze shortly after > starting. It didn't matter if the test was run in 'Safe Mode', or with SMP. > I can confirm the issues. I have Haswell (i5 4570): * With F32 Workstation Beta, memtest freezes at 35% (of the first test) reliably if I keep the defaults (which defaults to SMP:disabled) or force safe mode with F1. When I force SMP using F2, it reboots quickly. * With F31 Workstation, memtest reboots at 35% (of the first test) reliably if I keep the defaults (SMP: disabled) or force safe mode. When I force SMP, it reboots quickly. * With F30 Workstation, memtest seems to work fine (I waited only a few minutes) in all configurations. With a libvirt VM, memtest seems to work fine (I waited only a few minutes) with safe mode with F30-F32, but reboots immediately in default configuration or SMP (F30-F32). I used to have problems with memtest when I forced SMP in the past, but never with the default or safe mode configuration. Something changed recently (F31) for the worse. Interestingly, memtest always reports the same version (5.01) so I wonder what affects this.
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