On Mon, Dec 5, 2016 at 3:30 AM, Kevin Faulkner <kondor.6c@gmail.com> wrote:
> Hi I've installed Fedora 25 on my Beaglebone Black for the reasons of
> testing packages perhaps doing some quality assurance and helping with
> test days. I used the KDE spin and I found that sddm-greeter
> constantly consumes high amount of CPU, I can log in and it seem to
> kick off KDE and it starts akonadi for a new user. I tried to strace
> the process and I found that it calls gettimeofday
> frequently, which is expected since it displays the time. I don't have
> any explanation about why the CPU is so high. I tried to install
> systemtap but I didn't find kernel-debug-core. Is there something else
> I should do to debug this, is this a bug and should I report this? I
> don't want to waste people's time with a bug that might not be valid
> which is why I'm trying to investigate this as much as possible.
> I know the beaglebone black doesn't have the greatest resources
> available one CPU (1 GHZ) and 512MB RAM and on an sdcard (couldn't
> find how to move it to the NAND).

It's because the display on the BBone isn't accelerated using the GPU
and as KDE is all 3D it has to use the CPU for all the rendering. The
beagle bone is not a good device for graphical userspace.

The BeagleBone has an onobard eMMC (like a soldered mSD card) not NAND
storage. Once you've booted off the mSD card you can using the same
process for writing out an image to the eMMC as you did for writing
the SD card.