X keeps blanking the screen during install, however this is not desireable. It makes it difficult to glance at the screen and see if the installer needs your attention
You mean it goes into power saving mode?
We (Red Hat) should try to fix this for the next release.
It doesn't go into suspend mode, but it does do the part of powersave mode that causes the screen to turn off (even though the system is still going). Normally I like the powersave blanking, but the installer is a long process that isn't interactive for most of it, so I think expecting users to keep moving the mouse or hitting keys to keep seeing the status of the install is wrong.
Well, I added this at the request of bug #37025 and bug #37027. This also has the effect of enabling DPMS in the installer, but I think it's a fair tradeoff. It's better than having to enable DPMS manually after install.