On a recently purchased machine with Fedora 22 and an Nvidia GPU installed, following the excellent instructions didn't result in a working Skype installation (results in a segmentation fault on the command line).
The clues provided here lead to this solution:
cd /usr/bin/ mv skype skype-bin install -b -m 744 <(<<EOF #!/bin/bash LD_PRELOAD=/usr/lib/libGL.so.1.2.0 /usr/bin/skype-bin EOF) /usr/bin/skype
Should now work...
The reason for the problem are rooted in Nvidia redirecting Skype's loading of
libGL.so to their own library. However, in my case, the Nvidia card is for GPGPU usage only - no monitor will ever be connected to it (my sole monitor is connected to the motherboard-integrated Intel video).