% xscreensaver -verbose
xscreensaver 5.42, copyright (c) 1991-2018 by Jamie Zawinski <jwz@jwz.org>.
xscreensaver: 09:44:06: running as kiosk/kiosk (500/500)
xscreensaver: 09:44:06: in process 41202.
xscreensaver: 09:44:06: running on display ":0"
xscreensaver: 09:44:06: vendor is The X.Org Foundation, 12009000.
xscreensaver: 09:44:06: useful extensions:
xscreensaver: 09:44:06:   MIT Screen-Saver (disabled at compile time)
xscreensaver: 09:44:06:   Shared Memory (1.2)
xscreensaver: 09:44:06:   Double-Buffering (1.0)
xscreensaver: 09:44:06:   Power Management (1.1)
xscreensaver: 09:44:06:   GLX
xscreensaver: 09:44:06:   XF86 Video-Mode (2.2)
xscreensaver: 09:44:06:   XC Misc (disabled at compile time)
xscreensaver: 09:44:06:   Xinerama (1.1)
xscreensaver: 09:44:06:   Resize-and-Rotate (1.6)
xscreensaver: 09:44:06:   XInput
xscreensaver: 09:44:06: screen 0 non-colormapped depths: 24.
xscreensaver: 09:44:06: WARNING: RANDR and Xinerama report different
xscreensaver: 09:44:06: 		screen layouts!  Believing RANDR.
xscreensaver: 09:44:06: screens in use: 1
xscreensaver: 09:44:06:    0/0: 1024x768+0+0 (VGA-1)
xscreensaver: 09:44:06: rejected screens: 3
xscreensaver: 09:44:06:    1/0: 1024x768+0+0 (DP-1) -- output disabled
xscreensaver: 09:44:06:    2/0: 1024x768+0+0 (HDMI-1) -- output disabled
xscreensaver: 09:44:06:    3/0: 1024x768+0+0 (HDMI-2) -- output disabled
xscreensaver: 09:44:06: selecting RANDR events
xscreensaver: 09:44:06: not using XInputExtension.
xscreensaver: 09:44:06: consulting /proc/interrupts for keyboard activity.
xscreensaver: 09:44:06: 0: visual 0x21 (TrueColor,   depth: 24, cmap: default)
xscreensaver: 09:44:06: 0: saver window is 0xa00001.
xscreensaver: 09:44:06: selecting events on extant windows... done.
xscreensaver: 09:44:06: awaiting idleness.
xscreensaver: 09:44:10: ACTIVATE ClientMessage received.
xscreensaver: 09:44:10: user is idle (ClientMessage)
xscreensaver: 09:44:10: blanking screen at Thu Jun 17 09:44:10 2021.
xscreensaver: 09:44:10: 0: grabbing keyboard on 0x130... GrabSuccess.
xscreensaver: 09:44:10: 0: grabbing mouse on 0x130... GrabSuccess.
xscreensaver: 09:44:10: fading...
xscreensaver: 09:44:12: fading done.
xscreensaver: 09:44:12: 0: xscreensaver-gl-helper: GL visual is 0x21 (default).
xscreensaver: 09:44:12: 0: visual 0x21 (TrueColor,   depth: 24, cmap: 256)
xscreensaver: 09:44:12: 0: saver window is 0xa002f1.
xscreensaver: 09:44:12: 0: destroyed old saver window 0xa00001.
xscreensaver: 09:44:12: 0: spawning "glslideshow -root -delay 0 -zoom 100 -pan 1 -debug" in pid 41211.
glslideshow: 09:44:12: pan: 1; fade: 2; img: 30; zoom: 100%
glslideshow: 09:44:12: pan: 30; fade: 2; img: 30; zoom: 100%

glslideshow: 09:44:12: loaded   img  1: "20210201-01"
glslideshow: 09:44:12: loaded   img  2: "20210201-01"
glslideshow: 09:44:14: fade 119 frames  2 sec  59.1 fps (65.2 fps?)
glslideshow: 09:44:42: pan  1152271 frames 28 sec 41173.7 fps (65.1 fps?)
glslideshow: 09:44:42: static screen for 28.0 secs
glslideshow: 09:44:42: 65.5 fps is fast enough (with 121 frames in 29.9 secs)
glslideshow: 09:44:42: loaded   img  3: "20210201-01"
glslideshow: 09:44:44: fade 122 frames  2 sec  60.9 fps (63.8 fps?)
glslideshow: 09:44:44: unloaded img  1: "20210201-01"
xscreensaver: 09:44:51: user is active (mouse motion)
xscreensaver: 09:44:51: unblanking screen at Thu Jun 17 09:44:51 2021.
xscreensaver: 09:44:51: 0: killing pid 41211 (glslideshow)
xscreensaver:   signal: 0: child pid 41211 (glslideshow) terminated with signal 15.
xscreensaver: 09:44:51: 0: ungrabbing mouse (was 0x130).
xscreensaver: 09:44:51: 0: ungrabbing keyboard (was 0x130).
xscreensaver: 09:44:51: starting de-race timer (10 seconds.)
xscreensaver: 09:44:51: awaiting idleness.
xscreensaver: 09:44:51: no keyboard or mouse data in /proc/interrupts?
^C
xscreensaver -verbose  12.56s user 14.45s system 55% cpu 49.101 total