Rrd graps not working

Hi, sorry, but I’m still having the issue.

I red and tried all from:

and tried:

/etc/init.d/luci_statistics enable
/etc/init.d/collectd enable
opkg list | grep collectd-mod
opkg install collectd-mod-cpu collectd-mod-interface collectd-mod-memory collectd-mod-ping collectd-mod-rrdtool collectd-mod-wireless
mkdir /etc/collectd && mkdir /etc/collectd/conf.d && /etc/init.d/collectd start

… no success.
On luci /admin/statistics/graph
Im still having:

Statistiky
The statistics package uses Collectd to gather data and RRDtool to render diagram images.
You can install additional collectd-mod-* plugins to enable more statistics.

I can see gathered data on fs. Just I cant render any graphs from it.
(turris omnia 1g)