Works from command line; empty white screen when used within xscreensaver

[philCryoport]

Hi there,

Brand-new install of Linux Mint 18.3 x64. Installed via apt the xscreensaver package -- which installed xscreensaver 5.34.

I'm able to get webscreensaver to work from the command line:

webscreensaver -url https://www.google.com

Results in a window that shows the Google home page

Configured a programs entry in ~/.xscreensaver:

programs:                                                                              \
                 webscreensaver -url https://www.google.com   \n\

Webscreensaver is in the list of screensavers in xscreensaver. Other xscreensaver screensavers do work. But the preview in the xscreensaver GUI for webscreensaver shows a white screen.

Xscreensaver does seem to execute webscreensaver: if I put in an invalid parameter in the ~/.xscreensaver file, such as:

programs:                                                                             \
                 webscreensaver -foo -url https://www.google.com   \n\

The resulting preview ends up being a black screen with yellow text telling me that -foo is an invalid parameter.

Help?

[philCryoport]

xUbuntu 17.10.1 is running xscreensaver 5.36 (still not the latest version, but closer)

Ubuntu Desktop 17.10.1's Wayland / gdm interferes with xscreensaver's ability to lock the screen, so switched to Lubuntu 17.10.1 and voila! It works.