This didn't work well for me. I have a SuperMicro X11SSV-Q motherboard 
with an i7-6700 (6th gen i7) processor. When I enable this option, the 
system boots (although I can tell that it does something different, the 
standard font that the bootup messages display in is smaller, and I get a 
bunch of DRM warnings).
However, once the Centos login screen appears, it is like the screen is 
twice as wide as it is supposed to be, but I can only see the right half 
of the screen on the monitor. The mouse will slide to the left off the 
border and take as much movement to get back on the visible screen. I can 
blindly login using the keyboard, and my desktop appears, but again, only 
apparently the right half. If I move the mouse, say up and down without 
clicking the buttons, it is like it is dragging a shade over the screen 
with the mouse. I can right click, then slide the mouse down and reveal 
the right click menu.
Obviously it is not really useable in this state.
Perhaps something in Xorg.conf that needs to be tweaked?

Russ Poffenberger | System Architecture Group
Phone:  +1 / 408 / 635-6049
Xcerra Corporation, LTX/Credence Division
1355 California Circle
Milpitas, CA 95035, USA

Trevor Hemsley <>
EL Repo General Mailing List <>
09/20/2016 07:56 AM
Re: [elrepo] skylake and nvidia
Sent by:

There was a post made on the forums just recently that said that using


on the kernel command lijne makes it work for at least some Skylake chips 
with the standard CentOS kernel.

Skylake support is *meant* to be in 7.2 onwards.

On 20/09/16 15:46, Nicolas Thierry-Mieg wrote:
Hi again, 

as posted a short while ago, I have a new Acer Aspire E5-575G-55DE laptop 
and am trying to get C7 running on it. 

This laptop has an intel i5-6200U with integrated HD Graphics 520. It also 
has an nvidia GeForce GTX 950M. 
Installing kmod-nvidia and bumblebee as explained [1] results in the "Oh 
no! Something has gone wrong" screen. I suspect that's because the regular 
C7 kernel and xorg-x11-drv-intel don't support the intel 520. 

Booting into kernel-lt, it seems the intel 520 works...? This is 
surprising because Farkas Levente's recent post to this list suggested 
that a newer xorg-x11-drv-intel should be needed, in addition to the newer 
kernel. But I have a bunch of OK-looking intel messages in 
/var/log/Xorg.0.log , and glxinfo says: 
OpenGL vendor string: Intel Open Source Technology Center 
OpenGL renderer string: Mesa DRI Intel(R) Skylake ULT GT2 

Question 1: does this mean the intel 520 works fully under kernel-lt? If 
not, what should I look at? 

Assuming the intel GPU works under kernel-lt, I could then hope to get 
nvidia and bumblebee working. I've been using the elrepo nvidia drivers 
for ages, but I could use the nvidia-provided installer and hope it 
doesn't clobber anything (which I doubt...). 
Question 2: any caveats here? 

Finally I would need to get bumblebee working, otherwise the nvidia stuff 
is useless. However, bumblebee requires kmod-bbswitch... 
Question 3: I guess I would have to rebuild bbswitch [2] for kernel-lt, 
but could I still use the elrepo-provided bumblebee ? 

Thanks for any advice anyone can provide. 

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