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| Thread ID: 39672 | 2003-11-13 19:39:00 | Anything wrong with 2 monitors next to each other? | mejobloggs (264) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 191710 | 2003-11-14 00:46:00 | Where the 2 monitors each with it's own spike guard are fed from the same wall plug if you start the 2nd monitor whilst the first is booting up the power surge can result in the first boot getting all upset and calling it a day | FrankS (257) | ||
| 191711 | 2003-11-14 02:30:00 | The effect you are seeing is quite normal and is the degauss field from the start-up monitor affecting the screen that is already up and running . Provided they are both running at the same refresh rate there will be no problems, however differential refresh rates will produce visible interference effects at the difference frequency between the two refresh settings . For example, if one is set to 60Hz and the other is on 75Hz there will be a 15Hz interference pattern on one or both monitors, usually in the form of horizontal black lines moving up or down the screen but other effects can happen . The cause is electromagnetic interaction between the scanning fields in each monitor . I disagree with FrankS' comment re shared power outlets, because if starting one computer interrupts the boot on another then there is a serious issue with the supply impedance, i . e . loose wiring connections, spread pins in the socket or corroded fuse holders . Surge protectors are irrelevant to this issue as they are intended to protect against voltage increases, not voltage drops or load current surges . Only a UPS can protect against voltage drops, and nothing really protects against momentary load current surges, except perhpas a UPS if the current peak is high enough to lower the voltage to the point where the UPS kicks in . Again, it shouldn't have any effect if the supply wiring and connections are up to scratch . Don't use cheap multiway boxes to supply power though, they can be very high impedance . Cheers Billy 8-{) |
Billy T (70) | ||
| 191712 | 2003-11-14 02:49:00 | Ok, they are not the same. In linux, how do you change the refresh rate? I can do the resolution, but not the refresh rate. | mejobloggs (264) | ||
| 191713 | 2003-11-14 05:01:00 | Agree surge protectors irrelevant but mentioned it in case someone queried if they were fitted, don't have any loose wires etc as I am very fussy about that, re the multiway box that could be the culprit, will change it and see if it makes any difference. | FrankS (257) | ||
| 191714 | 2003-11-14 05:31:00 | > Ok, they are not the same. In linux, how do you > change the refresh rate? I can do the resolution, but > not the refresh rate. You need to make sure the monitor running X supports the refresh rate you want to change to first. |
mark.p (383) | ||
| 191715 | 2003-11-14 08:54:00 | Thin sheet steel rivetted to the screen or to your head is not the best material to screen magnetic fields from your brain :) What you need is µ or mu metal. This is a special alloy that is used to screen oscilloscope tubes from extraneous magnetic fields that would cause distortion to a precision display. | Terry Porritt (14) | ||
| 191716 | 2003-11-14 13:14:00 | marvelouse | mejobloggs (264) | ||
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