Re: Why the C-M-<keys> is invalid in my emacs?

[Navy Cheng]

On Fri, Aug 07, 2015 at 07:42:57PM -0700, Rusi wrote:
> On Saturday, August 8, 2015 at 7:26:56 AM UTC+5:30, Navy Cheng wrote:
> > Hi,
> > 
> > I find I can't use *C-M-<keys>* combined key in my emacs. I have to use
> > *Esc C-<keys>* to instead. However, when I close X-server in my OS and
> > use emacs in the console, *C-M-<keys>* is OK.
> > 
> > Why? How can I use *C-M-<keys>*, such as *C-M-h* in X?
> > 
> > Thanks.
> 
> Probably this is OS-related
> And you need to tell which OS so that those who know more specifics can 
> answer.
> Also 'M-' means what exactly to you?

I use Debian 8 and Xfce Desktop Environment. 'M-' is OK and 'C-M-' is OK in 
other
software execpt emacs.