Question about the modesetting on X server

[Alan Coopersmith]

On 04/27/11 10:26 PM, Huang, FrankR wrote:
> Okay. I understand that. But how the X server knows that no cliens are connected again?

It keeps a count of open clients, increments it when a new client
connects, decrements it when one disconnects.   When it decrements
nClients, if the new value is now 0, then set the flag to reset in
dispatch.

> Let me describe my debug process. I use GDB to debug the X server. When the X server is booting up, I set the breakpoint on modesetting function. Then I run "xrandr -s 1280x1024" to set the mode.

Start xlogo before running xrandr if you don't want the reset.
Or xclock.  Or twm, or any client that doesn't XCloseDisplay()
right away like xrandr, xdpyinfo, xset, etc. do.

-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System