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600:
Those Linux distributions that have replaced XScreenSaver with other screen-locking frameworks have suffered notable security problems. Those other frameworks have a history of security bugs that allow the screen to be un-locked without a password, e.g., by simply holding a key down until the locker
604:
In 2004, Zawinski had written about the architectural decisions made in XScreenSaver with the goal of avoiding this very class of bug, leading him to quip in 2015, "If you are not running XScreenSaver on Linux, then it is safe to assume that your screen does not lock."
306:
620:
Though many of the newer hacks take full advantage of the power of modern computers, the age of the project means that some of the older hacks may look dated to modern eyes, as they were originally written for much less powerful computers.
451:
into a separate process from the screen locking framework. This means that a programming error in one of the graphical display modes cannot compromise the screen locker itself (e.g., a crash in a display mode will not unlock the screen).
420:, and the developer discourages anyone from porting it. The author considers Microsoft to be "a company with vicious, predatory, anti-competitive business practices" and says that, as one of the original authors of
384:) use XScreenSaver almost exclusively. On those systems, there are several packages: one for the screen-saving and locking framework, and two or more for the display modes, divided somewhat arbitrarily.
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It also means that a third-party screen saver can be written in any language or with any graphics library, so long as it is capable of rendering onto an externally provided window.
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is responsible for detecting idle-ness, blanking and locking the screen, and launching the display modes. The display modes (termed "hacks" from the historical usage "
585:. Earlier versions of these frameworks still depended upon the XScreenSaver collection of screen savers, which is over 90% of the package. However, in 2011,
617:, to 3D demonstrations of complex mathematical principles, to simulations of other computer systems, to re-creations of artifacts and effects from movies.
473:
Rather than forking the code-base and re-writing the hacks to target different platforms, XScreenSaver contains a number of compatibility layers.
546:
the display modes, the XScreenSaver daemon links with as few libraries as possible. In particular, it does not link against GUI frameworks like
964:
310:
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409:
systems, the XScreenSaver display modes work either as normal screen savers (which
Android sometimes refers to as "Daydreams") or as
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models of a series of common drugs and other molecules, of which thirty-eight (38) are built in. It can also read
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version 3 dropped support for screensavers completely, supporting only simple screen blanking, and as of 2018,
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screen-blanking frameworks by default instead of the framework included with XScreenSaver. In 2011,
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in 1992 and is still maintained by him, with new releases coming out several times a year.
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systems, XScreenSaver is a stand-alone app that can run any of the hacks full-screen.
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program and running it. When run from the command-line, it is a fully functional
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For historical and portability reasons, the included hacks are all written in
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369:
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17:
1447:
529:, XScreenSaver also contains an implementation of the X11 API in terms of
1473:
1328:"CVE-2019-3010, Privilege Escalation in Oracle Solaris XScreenSaver fork"
679:
786:– puts a moving spotlight across the desktop in the style of the
701:
669:
381:
147:
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This is an important security feature, in that the display modes are
237:
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1492:
1422:"Sleep Mode: The Art of the Screensaver: Jamie Zawinski Interview"
683:
661:
478:
392:
377:
338:
304:
253:
905:– the filter-based fire effect, also known as flame effect.
818:
television set, including visual artifacts and reception issues.
731:
555:
990:"List of screen savers included in the XScreenSaver collection"
808:– creates collages out of random images found on the Web.
570:
551:
547:
522:
499:
482:
399:
342:
257:
233:
31:
613:
The included hacks are highly varied, ranging from simple 2D
1350:"Cinnamon-screensaver lock by-pass via the virtual keyboard"
485:, XScreenSaver contains a complete implementation of the
861:– based on the 1984 program regarded as the first
720:– 3D toasters fly around, inspired by the classic
498:
To allow the OpenGL 1.3-based hacks to run natively on
1172:"Re: What is the status of the screensaver in GNOME3?"
770:
from a file, or files placed in a directory, as input.
1481:
1306:"CVE-2015-7496, Hold ESC to unlock Gnome-session GDM"
776:– tiles the screen aperiodically with coloured
828:
and other celestial bodies that update in real time.
796:– an animation in the style of the video game
521:
And to allow the X11-based hacks to run natively on
899:– another effect common in older Amiga demos.
291:
279:
267:
243:
225:
199:
177:
167:
155:
1262:"CVE-2014-1949, Cinnamon-Screensaver Lock Bypass"
597:4.0.8 no longer supports the XScreenSaver hacks.
510:, XScreenSaver contains an implementation of the
477:To allow the X11-based hacks to run natively on
846:Some of the included hacks are very similar to
645:variants from many computer systems, including
865:ever, showing the bouncing red and white ball.
391:systems, XScreenSaver works with the built-in
1400:"jwz.org blog post about Gnome security bugs"
984:
982:
893:similar to those common in older Amiga demos.
730:– an OpenGL animation of inter-meshing
8:
871:– an implementation of full-screen 2D
744:– an OpenGL animation similar to the "
134:
1284:"Mandriva Security Advisory MDVSA-2015:162"
682:computer, showing a user entering a simple
1106:"jwz.org blog post about the Android port"
140:
133:
122:Learn how and when to remove this message
1488:
1149:"XScreenSaver source code distribution"
1078:
1076:
935:
1128:"XScreenSaver FAQ regarding KDE/Gnome"
1084:"jwz.org blog post about the iOS port"
916:Sleep Mode: The Art of the Screensaver
635:animation showing whales and dolphins.
58:Please improve this article by adding
558:for rendering the unlock dialog box.
349:operating systems. It was created by
7:
1170:Campagna, Giovanni (21 March 2011).
965:"Debian XScreenSaver copyright list"
758:– an OpenGL animation showing
883:– another common demo effect.
834:– animations similar to the "
318:Xscreensaver "GLMatrix" Screensaver
1378:"XScreenSaver: On Toolkit Dialogs"
1034:"Debian XScreenSaver package list"
918:, a gallery exhibition curated by
444:") are each stand-alone programs.
25:
416:There is no official version for
1503:
1491:
1446:
1234:"Cinnamon-Screensaver Key Flood"
36:
1056:"XScreenSaver: Windows Version"
206:6.08 / October 10, 2023
1190:"Linux Mint 19.1 Announcement"
1012:"XScreenSaver release history"
372:operating systems running the
1:
1510:Free and open-source software
1212:"Gnome-Screensaver Key Flood"
914:XScreenSaver was featured in
748:" title sequence seen in the
700:– a number of coloured
462:. About half of them use the
60:secondary or tertiary sources
814:– simulates an analog
506:systems, which only support
466:API, and about half use the
624:Examples of hacks include:
1552:
146:XScreenSaver-demo and the
704:scroll across the screen.
641:– shows fake fatal
221:
195:
139:
710:– a 3D display of
514:1.3 API built in top of
838:" sequence seen in the
790:film opening sequences.
768:PDB (Protein Data Bank)
208:; 11 months ago
561:In recent years, some
319:
183:; 32 years ago
47:relies excessively on
678:– simulates an
565:have begun using the
432:Software Architecture
317:
297:jwz.org/xscreensaver/
1455:at Wikimedia Commons
924:Het Nieuwe Instituut
891:interference circles
650:Blue Screen of Death
595:cinnamon-screensaver
583:cinnamon-screensaver
554:, but uses only raw
489:API built on top of
327:free and open-source
27:Screensaver software
1531:Utilities for macOS
577:was forked as both
563:Linux distributions
329:collection of 240+
181:17 August 1992
136:
1308:. 24 November 2015
1192:. 20 December 2018
1036:. 24 December 2020
967:. 24 December 2020
712:strange attractors
422:Netscape Navigator
320:
157:Original author(s)
1536:X Window programs
1451:Media related to
1424:. 27 January 2017
1380:. 19 October 2004
1358:. 15 January 2021
1330:. 23 October 2019
1264:. 16 January 2015
1151:. 8 December 2020
1014:. 8 December 2020
992:. 8 December 2020
688:terminal emulator
647:Microsoft Windows
587:gnome-screensaver
575:gnome-screensaver
567:gnome-screensaver
436:The XScreenSaver
426:First Browser War
418:Microsoft Windows
315:
303:
302:
132:
131:
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106:
16:(Redirected from
1543:
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1464:
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1461:Official website
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1242:. 22 August 2014
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920:Rafaël Rozendaal
816:cathode-ray tube
579:mate-screensaver
518:1.0 ("jwzgles").
316:
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245:Operating system
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1286:. 29 March 2015
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1214:. 16 April 2014
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1178:(Mailing list).
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922:at Rotterdam's
912:
889:– moving
850:created by the
736:planetary gears
718:Flying toasters
666:Guru Meditation
643:screen of death
611:
542:In addition to
540:
434:
411:live wallpapers
374:X Window System
359:
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178:Initial release
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53:primary sources
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1469:"XScreenSaver"
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1441:External links
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1402:. 4 April 2015
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1086:. 19 June 2012
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840:Matrix trilogy
829:
824:– draws
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764:ball-and-stick
753:
750:Matrix trilogy
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395:screen saver.
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351:Jamie Zawinski
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201:Stable release
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173:Jamie Zawinski
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162:Jamie Zawinski
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71:"XScreenSaver"
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1108:. 23 May 2016
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363:free software
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73: –
72:
68:
67:Find sources:
61:
55:
54:
50:
45:This article
43:
39:
34:
33:
30:
19:
1526:Screensavers
1472:
1453:XScreenSaver
1426:. Retrieved
1416:
1404:. Retrieved
1394:
1382:. Retrieved
1372:
1360:. Retrieved
1353:
1344:
1332:. Retrieved
1322:
1310:. Retrieved
1300:
1288:. Retrieved
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1266:. Retrieved
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1244:. Retrieved
1237:
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1216:. Retrieved
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1194:. Retrieved
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1153:. Retrieved
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1131:. Retrieved
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1110:. Retrieved
1100:
1088:. Retrieved
1063:. Retrieved
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1038:. Retrieved
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1016:. Retrieved
1006:
994:. Retrieved
969:. Retrieved
959:
947:. Retrieved
938:
915:
913:
902:
896:
886:
878:
873:bump mapping
868:
858:
848:demo effects
845:
836:digital rain
831:
821:
811:
805:
797:
793:
783:
773:
755:
746:digital rain
741:
727:
724:screensaver.
717:
707:
697:
691:
675:
654:kernel panic
638:
628:
623:
619:
612:
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571:kscreensaver
560:
541:
472:
457:
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442:display hack
435:
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397:
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331:screensavers
323:XScreenSaver
322:
321:
169:Developer(s)
135:XScreenSaver
118:
109:
99:
92:
85:
78:
66:
46:
29:
18:Xscreensaver
1428:24 December
1406:24 December
1384:24 December
1334:24 December
1290:24 December
1268:24 December
1246:24 December
1218:24 December
1196:24 December
1176:gnome-shell
1155:24 December
1133:24 December
1112:24 December
1090:24 December
1065:24 December
1060:www.jwz.org
1040:24 December
1018:24 December
996:24 December
971:24 December
944:"Changelog"
672:, and more.
668:" error, a
631:– an
615:psychedelia
367:open-source
286:MIT License
274:Screensaver
112:August 2019
1520:Categories
1362:15 January
1312:18 January
930:References
863:Amiga demo
806:Webcollage
794:Sproingies
788:James Bond
722:After Dark
660:crash, an
652:, a Linux
591:Linux Mint
544:sandboxing
493:("jwxyz").
226:Written in
213:2023-10-10
188:1992-08-17
82:newspapers
49:references
926:in 2017.
897:ShadeBobs
880:Metaballs
852:demoscene
812:XAnalogTV
784:Spotlight
601:crashes.
531:OpenGL ES
516:OpenGL ES
508:OpenGL ES
470:1.3 API.
449:sandboxed
389:Macintosh
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680:Apple II
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538:Security
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949:4 March
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822:XPlanet
774:Penrose
698:Barcode
690:(as is
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527:Android
504:Android
407:Android
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