Should I change my PhD advisor when I find I got not enough advising? UPDATE: My program is Computer Science and Engineering.

I chose the current advisor for mainly three reasons:


I'm interested in a general research area, and he's in a group doing the stuffs.
He has good publications in top conferences and journals in recent years.
Applying for other graduate schools is exhaustive, and I didn't search for other programs.


Here are some reasons which make me consider changing an advisor:


I have no regular individual meeting with him. In the first semester, I had no idea about what I should do to find a research topic. Then in the second semester, I only talked with the post-doc in our lab, who graduated with a thesis in another area very different from the general topic in our lab.
In group meeting, we present our works to him and he gives some advice (for me, you don't understand the paper you need to redo it; for others, this paper was not published in a good conference/journal...). I think he doesn't try to understand some meeting contents, because he's even not focusing on the it, doing something else. Once he left early because he thought the presentation was not interesting.
I wrote weekly report, and he forwards it to the post-doc for how I'm doing.
We are not doing the research that attracts me. And no one in our group knows how to do it.


But I still have considerations to change advisor:


I have few options in choosing a new advisor in a related research area.
I don't have a target group I want to move to.


Could you give some suggestions on how I could handle this situation?
There are some students who don't need a lot of direction and can find and analyze their own research problems. There are others (many others) who need more direction and even suggestions about problems. Likewise there are advisors who want to give a lot of direction, sometimes too much. And their others who don't, or who prefer to work only with their most advanced students. It can be a problem if there is a mismatch. 

The two ways of curing the mismatch are begging for help and hoping that the advisor responds positively, and finding a different advisor who is more helpful at the point at which you currently are. 

Perhaps your advisor depends a lot on those senior students and postdocs to give direction to the newer members of the "team". If you can find and exploit that help there, you can probably be successful. Otherwise you should consider your options for another advisor. 

Don't spend a lot of time hoping it will get better. If you, or someone, takes some action that seems to be moving in a positive direction then you may be able to see what happens. But if nothing does, protect your options and your future.