[coreboot] Neither seaBIOS or GRUB payloads are able to boot gentoo [amd_pmu_init performance counters freeze] [KGPE-D16]

[Timothy Pearson]

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On 11/20/2016 01:29 PM, Taiidan at gmx.com wrote:
> I have tried booting with multiple gentoo kernels but every time it
> either hangs on amd_pmu_init ("amd performance counters") with a stack
> trace or simply black screens and reboots quickly.

The stack trace would help.  This is probably a kernel issue; Gentoo may
have enabled a little-used feature and it may not work correctly under
coreboot.  Need the trace to debug further.

>
> + (if anyone knows) How come I have to run fancontrol/pwmconfig to get
> the fans to slow down? The proprietary bios had the same issue until I
> found an option for "whisper" fan control mode.

The KGPE-D16 is a server board; as such, it is appropriate to set fans
to full speed until the OS-based thermal management controls can take
over.  Without this feature, a system that overheated (e.g. if fans were
set to a low RPM incorrectly) may either get stuck in a reboot loop or
power down entirely in a remote location.  Needless to say, requiring
physical intervention over this type of fault is undesirable in a server
system.

- -- 
Timothy Pearson
Raptor Engineering
+1 (415) 727-8645 (direct line)
+1 (512) 690-0200 (switchboard)
https://www.raptorengineering.com
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