Created attachment 1362239 [details]
Output of diff -p with fix applied

Description of problem: Cura fails to start if nvidia driver is installed. A fix is present in the code but doesn't detect Fedora properly.


Version-Release number of selected component (if applicable):
3.0.3-2.fc27.noarch and
3.0.3-3.fc27.noarch


How reproducible: Always


Steps to Reproduce:
1. Install nvidia drivers from rpmfusion
2. start cura

Actual results:
No content in main window


Expected results:
buttons, pictures etc should be shown


Additional info:
If started from the command line, output such as the following appears:
QOpenGLShaderProgram::uniformLocation(dpr): shader program is not linked
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShader: could not create shader
shader compilation failed: 


In /usr/bin/cura we see:
#WORKAROUND: GITHUB-88 GITHUB-385 GITHUB-612
if Platform.isLinux(): # Needed for platform.linux_distribution, which is not available on Windows and OSX
    # For Ubuntu: https://bugs.launchpad.net/ubuntu/+source/python-qt4/+bug/941826
    if platform.linux_distribution()[0] in ("debian", "Ubuntu", "LinuxMint"): # TODO: Needs a "if X11_GFX == 'nvidia'" here. The workaround is only needed on Ubuntu+NVidia drivers. Other drivers are not affected, but fine with this fix.


"Fedora" needs to be added to the if statement.

Patch attached.

Obviously it would be nice if this was fixed upstream. Hopefully this patch can be applied promptly for Fedora 27.