Need help with kernel, modules and headers

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I need some help about kernels, modules and so on.

I've installed CentOS6.5 (fresh install) on a DELL E7440 laptop. After all the 
updates I get the latest kernel: kernel-2.6.32-431.

But with this config I've a problem: If I close the screen on the keyboard, the 
laptop hibernate. When I open it the system restart (I connect use ssh to reach 
the laptop) but the screen remains black (Intel HD Graphics 4400).

I've installed a more recent kernel from  elrepo-kernel 
(kernel-lt-3.10.26-1.el6.elrepo.x86_64) and it solves the black screen problem.

But now I have several errors about
=> kdump,
Starting kdump: ÉCHOUÉ
=> vboxdrv
Starting VirtualBox kernel modules  ÉCHOUÉ
   (modprobe vboxdrv failed. Please use 'dmesg' to find out why)
=> dkms (requested for VirtualBox)
Démarrage de dkms : Error!
Your kernel headers for kernel 3.10.26-1.el6.elrepo.x86_64 cannot be found at
/lib/modules/3.10.26-1.el6.elrepo.x86_64/build or 
/lib/modules/3.10.26-1.el6.elrepo.x86_64/source.

but kernel-lt-headers cannot be installed (conflicting with the installed 
kernel-headers requested by many packages).


So what could you suggest me to solve this situation ?
-> kernel-2.6.32-431 all is working but if the laptop hibernate it hangs
-> kernel 3.10.26-1 video works fine but I get conflicts for some applications

Thanks for your advices

Patrick

-- 
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|  Equipe M.O.S.T.         |                                      |
|  Patrick BEGOU           | mailto:Patrick.Begou@xxxxxxxxxxxxxxx |
|  LEGI                    |                                      |
|  BP 53 X                 | Tel 04 76 82 51 35                   |
|  38041 GRENOBLE CEDEX    | Fax 04 76 82 52 71                   |
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