Update to set_prefs.sh to fix check_nvidia

[williamchanter]

I found when running the new code I got this error ...

awk: line 0: regular expression compile failed (missing '(')
): 

By escaping the ")" it fixed the issue for me

[williamchanter]

Haven't checked this with anything but my system (Dell XPS 9570 / KDE Neon) but it did fix it :+1:

$ awk -W version
mawk 1.3.3 Nov 1996, Copyright (C) Michael D. Brennan

compiled limits:
max NF             32767
sprintf buffer      2040

Thanks for all the work you've done on this project it's been super useful

[jsalatas]

Well, it seems you are using mawk and not gawk. My system (also KDE Neon) uses gawk and I'm pretty sure this is the default. Could you please run sudo update-alternatives --config awk and choose gawk? That will fix your issue.

PS: I'm not merging your patch for now, as in most systems gawk should be the default :. Let's wait for a couple of more days to hear from other people as well.