[CentOS] Centos 7 and Kably lake: black screen

Fred Smith fredex at fcshome.stoneham.ma.us
Sat Nov 12 20:34:46 UTC 2016


On Sat, Nov 12, 2016 at 09:15:22PM +0100, Louis Lagendijk wrote:
> I got a new laptop as my old one died: an HP Probook 470 G4. 
> I installed Centos 7 1511.
> The laptop has a Kaby Lake i5 CPU and an 
> 01:00.0 3D controller: NVIDIA Corporation Device 134e (rev a2). 
> Fedora recognizes it as a GM108M/930MX. This may give some hints, but
> it is not that the standard kernel does not support it, this output
> comes from the 4.8.7 mainline kernel which should support this
> configuration? GM108 support was added in kernel 4.7, Kaby lake support
> was added in 4.5...
> 
> When I boot nothing shows up after the UEFI Grub menu: the system runs
> but nothing is shown on the display, except for a non-blinking cursor
> in the upper left of the screen. I tried a number of things:
> - Installed the latest ml-kernel from Elrepo (4.8.7-1)
> - I also tried the following on the kernel commandline:
> 	nomodeset i915.nomodeset=0 nouveau.modeset=0
> Nothing changes the fact that there is no display.
> 
> I had to install Centos 7 using vnc as even a text install did not work
> 
> Does anybody have some idea what the cause could be and what to try
> next?

Did you try CTRL-ALT-F2 or -F3 ? perhaps X has just died (or not been
properly started), but that would get you a text-mode consosle from
which to work and experiment.

if that works, you could try typing "startx" (lose the quotes). which
may provide informative errors. or not. 

YMMV


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