[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 #21 from paulz <freedesktop.org at nospam.mooo.com> ---
(In reply to Imre Deak from comment #19)
> Thanks, looks like the only activity preceding the freeze is some periodic
> GPU command, I suppose to update the clock in GUI, but nothing out of
> ordinary. You could still check if enabling pstore would provide additional
> logs after freeze and reboot. For that you'd need to build your kernel with
> EFI or RAM based PSTORE support (for EFI: CONFIG_PSTORE=y,
> CONFIG_EFI_VARS_PSTORE=y) and boot with the 'nmi_watchdog=panic panic=5'
> kernel params. After freeze/rebooting
> 
> # mount -t pstore none <dir>
> 
> should put any such logs in <dir>.

paul at behemoth:~$ grep CONFIG_PSTORE /boot/config-4.13.0-39-generic
CONFIG_PSTORE=y

paul at behemoth:~$ grep CONFIG_EFI_VARS_PSTORE /boot/config-4.13.0-39-generic
CONFIG_EFI_VARS_PSTORE=m

i guess i have to rebuild the kernel because CONFIG_EFI_VARS_PSTORE is not "y"?

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