[Bug 92974] Fiji Nano long boot up and long X startup with amdgpu-powerplay enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92974

--- Comment #2 from charlie <bug0xa3d2 at hushmail.com> ---
Sorry for the delay in response.  My computer was down.

I mean with CONFIG_DRM_AMD_POWERPLAY=n in kernel the ".config" file the
computer starts up normally and X starts normally too without a 2 minute delay
after each.

With CONFIG_DRM_AMD_POWERPLAY=y in the kernel .config file there are two minute
delays at boot and also after type, "startx".

However with CONFIG_DRM_AMD_POWERPLAY=y in kernel this delay/bug can be
bypassed if, "Device Drivers/Graphics support/Direct Rendering Manager/Enable
legacy fbdev support for your modesetting driver" is set to, "n".  I don't know
what ".config" line name is for that option which I set using, "make
menuconfig".  Bypassing the bug this way just causes a blank screen however I
can still login blind and start X to a normal display.  Or I can use KDM or
SDDM to auto-login for me.

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