Comment 41 for bug 156550

Have the same problem:
$ xscreensaver -verbose
xscreensaver 5.04, copyright (c) 1991-2006 by Jamie Zawinski <email address hidden>.
xscreensaver: running as pcfe/pcfe (500/500)
xscreensaver: in process 2427.
xscreensaver: 0: xscreensaver-gl-helper: GL visual is 0x23 (default).
xscreensaver: 1: xscreensaver-gl-helper: GL visual is 0x23 (default).
xscreensaver: running on display ":0.0" (2 Xinerama screens).
xscreensaver: vendor is The X.Org Foundation, 10300000.
xscreensaver: useful extensions:
xscreensaver: MIT Screen-Saver <-- not supported at compile time!
xscreensaver: Shared Memory
xscreensaver: Double-Buffering
xscreensaver: Power Management
xscreensaver: GLX
xscreensaver: XF86 Video-Mode
xscreensaver: Xinerama
xscreensaver: Resize-and-Rotate
xscreensaver: screen 0 non-colormapped depths: 0 24.
xscreensaver: Xinerama layout:
xscreensaver: + 0/0: 1600x1200+0+0
xscreensaver: 1/0: 1360x768+0+0
xscreensaver: selecting RANDR events
xscreensaver: 1: xinerama vp: 1360x768+0+0.
xscreensaver: 0: visual 0x23 (TrueColor, depth: 24, cmap: default)
xscreensaver: 0: saver window is 0x1600001.
xscreensaver: 1: xinerama vp: 1360x768+0+0.
xscreensaver: 1: saver window is 0x1600005.
xscreensaver: selecting events on extant windows... done.
xscreensaver: awaiting idleness.