I need to use a lowercase lambda symbol.
The lyx documentation states that if I should be able to use the insert symbol, or copy and paste one into the document, but neither of these methods work.
I've had various error messages, firstly it was
"Error: Encoding file grenc.def not found"
Then in the terminal I ran the commands
sudo tlmgr install textgreek sudo tlmgr install greek-fontenc
And now the error message I get is
"LaTeX Error: This NFSS system is not set up correctly"
Is there any simple way to solve this problem? I've tried reinstalling lyx but that has not helped.