[Bug 105962] [KBL] "enable_rc6" parameter deprecation brings back freezing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105962

--- Comment #26 from paulz <freedesktop.org at nospam.mooo.com> ---
(In reply to Tomi Sarvela from comment #24)
> If you see /sys/fs/pstore, then the feature is enabled and working.
> 
> Next thing is to configure linux to write dmesg buffer to pstore when
> panicing, and the important thing is to panic. Add to command line:
> 
> nmi_watchdog=panic,auto panic=5 softdog.soft_panic=5
> 
> (5 on the command line means 5 seconds)
> 
> Unfortunately, in many suspend/hang issues nothing gets written to pstore
> because CPU is not available. Pstore is a last resort thing, a bit like
> console: it might help, or it might stay silent.

No it's not, EFI store is just mounted!

We have also have to load the module "efi_pstore" (CONFIG_PSTORE_RAM=m) and
maybe "ramoops" so i added it to /etc/modules!

Now there are dmesg-efi-* files in /sys/fs/pstore/ if i trigger a kernel crash!

now i am waiting for next freeze whithout disabling "rc6" (boot options: debug
ignore_loglevel drm.debug=0x1f nmi_watchdog=panic,auto panic=5
softdog.soft_panic=5)

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