[K12OSN] No possibility to login via xdmcp

[Radek Bursztynowski]

Hello,

Few days ago I wrote my post concernig troubles with rdesktop. This
problem I solved, but not exactly. My server runs with CentOS 6.3
x86_64. I installed K12Linux, but I found that K12Ltsp daesn't supply
rdesktop or xfreerdp package. There is no possiblity to install rdesktop
or xfreerdp packages using chroot to /opt/ltsp/i386 directory because
there is confilict of packages (/opt/ltsp/i386 directory holds i686
packages, bud main server is x86_64). So, I try to avoid this problem by
another way. I installed K12Linux in virtual machine with CentOS 6.3 x86
and I added redesktop. All work the best. Next setp I moved from CentOS
x86 K12Linux installation to x86_64 CentOS. Thin clients boot and load
image. I can see LDM with SCREEN_01, I can login with rdesktop
(SCREEN_02), but I couldn't login to the Linux server using LDM. It is
possible to loggin to the same Linux server via XDMCP (XDM_SERVER
parameter and starx scripts).

Why I couldn't login via LDM? 
Let me add, that LDM_DIRECTX = True

Regards,
Radek