用"Konstruct"升级KDE的时候README看不太明白

hdifilwy

如题,在用KDE官方提供的"Konstruct"工具升级KDE时候,After installation这一段里面有这样的话:

On shadow password systems you have to set $(prefix)/bin/kcheckpass SUID root
or SGID shadow - otherwise you will not be able to unlock a locked desktop.

The complete KDE desktop is started with "startkde", most distributions start
it if you set it to the WINDOWMANAGER variable in your shell initializations.

这两个步骤 具体怎么操作?