Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!mcvax!cernvax!ethz!wyle From: wyle@ethz.UUCP (Mitchell Wyle) Newsgroups: comp.unix.questions,comp.unix.wizards Subject: Screen save or turn off: Summary of responses Message-ID: <97@bernina.UUCP> Date: Mon, 25-May-87 07:50:24 EDT Article-I.D.: bernina.97 Posted: Mon May 25 07:50:24 1987 Date-Received: Tue, 26-May-87 03:20:37 EDT Organization: ETH Zuerich, Switzerland Lines: 75 Keywords: screensaver, burn-in, hardware, mtbf Xref: mnetor comp.unix.questions:2532 comp.unix.wizards:2460 The responses have stopped trickling in. The most helpful was from a very experienced Electrical Engineer here on campus. He explained the physics of failure phenomena, hardware management, and preventative maintenance. Unfortunately for you, I deleted his response 8-( He said to TURN the MONITORS OFF, but let everything else run, including printers. Here are the rest of the answers. Thank you all for the advice. We decided to run screensaver, and turn everything off at night. -Mitch ----------------------------------------------------------------------- From: Karl Berry Subject: Turn off screens? I heard via six levels of gossip that (a) it's better to leave Macs & laser printers on, but (b) turn Suns off, but don't count this as informed information. ----------------------------------------------------------------------- From: Subject: Screen saving What we do on our Suns is have a login (no password) called "lock". It's login shell is a shell script which runs /usr/bin/lockscreen_default (also known as the game of "life.") When a user logs out, he logs in as "lock" and walks away. To use the Sun, just type ^C or whatever the interrupt character is set to in lock's login shell. We have found that running lockscreen_default keeps the screen from burning in. Theodore Hope School of Information & Computer Science, Georgia Tech, Atlanta GA 30332 CSNet: Hope@gatech ARPA: Hope@Gatech.EDU uucp: ...!{akgua,decvax,hplabs,ihnp4,linus,seismo,ulysses}!gatech!hope ----------------------------------------------------------------------- From: Subject: screen saver or shut it off? Mitchell - Everything that I have been told by "knowledgeable" hardware types is that you should use screen-saver and not turn the Sun's off. Our local Mac guru turns the laserwriters and Mac's off, but I leave our Imagen (with the Canon Engine) on. If you have bad power, I suggest the an UPS will help. Jeff Edelheit (edelheit@mitre-gateway.arpa) The MITRE Corporation, 7525 Colshire Drive McLean, VA 22102 (703) 883-7586 ----------------------------------------------------------------------- From: David England Subject: Sun's saving or shutting down When we had our first Sun 2/120 we used to shut it off at night and weekends. Unfortunately the switches were no good and broke down after > 10 switches. So now we leave the processors switched on. We turn the monitors of the Sun 3 machines off because the "life" game that the lock program uses concentrates on the centre of the screen and eventually leaves burnt in black rectangles. The Sun 2.0 lock program is ok. Similarly we leave Macintoshes and Laserwriters switched on. There are people here who work at night and weekends. I wouldn't be happy about switching machines on and off every day. Dave uucp(Europe): ...!mcvax!ukc!dcl-cs!de uucp(Atlantic): ...!seismo!comp.lancs.ac.uk!de arpa: de@comp.lancs.ac.uk ----------------------------------------------------------------------- -- Mitchell F. Wyle |csnet or arpa: wyle%ifi.ethz.chunet@relay.cs.net Instituet fuer Informatik |uucp: wyle@ethz.uucp ...!cernvax!ethz!wyle ETH Zentrum / SOT |telephone: 011 41 1 256 5235 8092 Zuerich, Switzerland |"Sic itur ad astra"