On 10/06/2016 04:15 PM, Nicolas Thierry-Mieg wrote:
Hello,
as mentioned a few weeks ago I am trying to get C7 fully functional on
a new Acer Aspire E5-575G-55DE laptop, which has an intel i5-6200U
with integrated HD Graphics 520 as well as a nvidia GeForce GTX 950M.
Thanks to advice from this list I got the intel graphics to work with
the standard EL7 kernel by adding i915.preliminary_hw_support=1 to the
kernel options.
I then followed the instructions from http://elrepo.org/tiki/bumblebee
to install the nvidia kmod and driver, as well as bumblebee. After
rebooting I get a "Oh no! Something has gone wrong" screen.
I managed to fix this by
sudo mv /usr/lib64/xorg/modules/extensions/nvidia/ /usr/lib64/xorg/
and modifying XorgModulePath accordingly in bumblebee.conf .
Everything now works: I can now boot in X mode (using the intel gpu)
and start applications using the nvidia gpu with optirun.
Comparing the Xorg.0.log files between initial (broken) install and
after my fix, the main difference is (removing timestamps for
readability):
BROKEN:
(II) LoadModule: "glx"
(II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
(EE) Failed to load
/usr/lib64/xorg/modules/extensions/nvidia/libglx.so:
libnvidia-tls.so.367.44: cannot open shared object file: No such file
or directory
(II) UnloadModule: "glx"
(II) Unloading glx
(EE) Failed to load module "glx" (loader failed, 7)
FIXED:
(II) LoadModule: "glx"
(II) Loading /usr/lib64/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="X.Org Foundation"
compiled for 1.17.2, module version = 1.0.0
ABI class: X.Org Server Extension, version 9.0
(==) AIGLX enabled
So it seems that when the nvidia libglx is in
/usr/lib64/modules/extensions/nvidia/libglx.so , X tries to load that
instead of the correct /usr/lib64/xorg/modules/extensions/libglx.so .
I might be wrong but I think that you did not fix it correctly.
nvidia comes with its own libglx and /etc/Xorg.d/*nvidia.conf properly
tells Xorg to load it from /usr/lib64/xorg/modules/extensions/nvidia/.
The real issue is that the module cannot find libnvidia-tls.so.367.44
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