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keywords=DisplayConfigX,100Hz,MacOSX,OSX,Apple,Mac,resolution,resolutions,frequency,timing,monitor,display,screen,projector,flicker,fix,fixed,multi,sync,100,HZ,multi-scan,multiscan,multi-sync,VGA,HDTV,projector,LCD,TFT,digital,blank,porch,sync,signal;
description=Your monitor flickers, stressing your eyes? The usual resolutions aren t enough? Want to adjust resolutions for HDTV? Then this program is probably what you need.;
Author=Harald Schweder;

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Text of the page (random words):
ly at refresh rates below 100hz with this program you can adjust your mac to optimally match your monitor you get arbitrary resolutions at as high refresh rates as your monitor supports without registration only low to mid size resolutions are supported requirements installation uninstall registration history download faq hdtv timing table disclaimer contact requirements system mac os x 10 2 x 10 3 x 10 4 x 10 3 8 or better recommended imac intel macbook pro mac mini intel powermac g3 g4 g4 dual g5 g5 dual mac mini see universal binary powerbook g4 external monitor connector imac g5 with mirror patch emac no big gain though not supported powerbook g3 imac crt version ibook graphics card nvidia geforce 6800 fx fx go 4mx 2mx seems to require 10 3 x ati radeon certain rage pro 128 apparently not all rage pro 128 versions work others if sufficiently integrated in macosx old ndrv style drivers won t work not supported ati rage rage mobility rage pro drivers lack required features monitor analog multi sync monitor tft hdtv given adequate connectors vga or bnc dvi connector monitor with automatic frequency check recommended supports analog and digital projectors hdtv lcd tft displays and fixed frequency monitors not supported tv output svideo composite sync or sync on green back to contents installation you need to be administrator on your mac the latest version of this program is displayconfigx dmg move the application to your hard disc preferably to the applications folder or to your desktop start the program and compare the data shown with the details given in your monitor manual if your monitor supports true auto configuration most of these values are not changeable and you don t have to do anything here in that case the program does not allow you to change the values otherwise adjust the frequencies to the specification you should find in your monitor manual refresh rate this is the range of supported refresh rates also known as vertical scan rate or vertical frequency usually given in hertz hz if you can not find this information for your monitor the default guess should work it should be safe to set the upper limit to whatever highest refresh rate is you have successfully used it with and the lower limit to 75hz horizontal frequency this is the range of supported horizontal scan rates usually given in kilohertz khz this range must match your monitor if you can not find this information for your monitor the default guess may or may not work good luck in that case and check after rebooting monitor stays blank before you try pixel frequency this is the bandwidth limit of your monitor also known as dot clock usually given in megahertz mhz if your monitor manual does not specify this value typical hardware should handle at least 250 mhz good quality hardware 350mhz or even more there is only an upper limit and many monitors accept more than what the manual says setting this too low yields low vertical frequencies flicker setting this value way too high might yield somewhat unfocused pixels the aspect ratio of most monitors is 4 3 widescreen monitors usually use 16 10 or 16 9 if you can t find this value calculate the ratio as follows height of visible screen divided by its width and multiplied by 64 the resulting ration is 64 value for digital displays this value is replaced by the native resolution setting which specifies how many pixels your display actually has for analog displays using dvi connection set this to whatever is the maximum usable resolution the default refresh rate is used by all automatic resolutions unless it conflicts with the monitor specification you can now check the resulting resolutions in the resolutions tab here you can disable resolutions or add new ones using the edit button you can modify refresh rates they will be checked against your monitors capabilities or specify completely arbitrary timings if you have a resolution selected and hit the button you create a copy of that resolution which you can then modify if you only have one monitor and do not know how to use the single user mode now would be a good time to check the faq section about what to do if things fail since you might end up with a blank screen you might want to print that section use the install button in the install tab to save the configuration in your system restart your mac if the monitor is still dark after about 25 seconds or starts to produce funny noises switch it off and see the section about what to do if things fail the new resolutions should now show up in the system preferences displays whereas resolutions not adequate for your monitor should be gone should you like the program register it and reinstall the resolutions since the registered version supports more in cases of emergency screen stays blank see after rebooting monitor stays blank should the program not work on your system check the requirements or whether there is an update available if that doesn t help drop me an email please be detailed at dcxsupport delphin all de back to contents uninstall in order to uninstall simply use the menu item uninstall for all monitors reboot as indicated and then delete the program back to contents register please test the program before registering to get rid of the restrictions in the unregistered version you need to buy a serial number please use the buy button in the registration window it is accessible via the register menu entry and will send you to an online order page at www kagi com after completing the order you should receive a serial number within the next few days often within hours please reinstall your monitor configuration after registering since the unregistered version doesn t support all resolutions back to contents faq are intel macs supported after rebooting monitor stays blank after changing the resolution my monitor goes blank the new resolution are not centered on my monitor i can t see all of the image and there are black bars the resolution list does not contain some resolutions mentioned in the monitor manual there is a resolution missing that was available before installing displayconfigx how can i tweak the refresh rates how can i specify the resolution timing details myself how can i optimize the image quality on my multi sync monitor do high refresh rates ware out monitors faster are hdtv monitors supported how to get rid of overscan what are those syncs and porches anyways are digital projectors supported are lcd monitors supported are fixed frequency monitors supported are old ndrv cards supported i have a notebook and use different monitors at home and at work is that supported are emacs supported how do i prevent other users of my machine from changing the settings what resolutions and refresh rates are supported how can i enter x11 modelines back to contents universal binary while the application is not a universal binary it should nevertheless work fine on the new intel macs using rosetta i still haven t tested it myself but got positive reports with no intel specific problems back to faq after rebooting monitor stays blank for some reason your monitor does not accept the installed frequency switch it off to remove the installed settings connect some other monitor to your machine and use the menu command uninstall for all monitors to get rid of the faulty configuration for some configurations you can boot with the shift key pressed to ignore the new settings swapping cables bnc instead of vga or vice versa usually helps too sometimes it helps to boot with the monitor switched off as a last resort if you are experienced with single user mode you can boot into that enter mount uw to make the harddisk writable navigate to the application and call displayconfigx app contents resources install removeall and reboot back to faq after changing the resolution my monitor goes blank similar to after rebooting monitor stays blank but given that some other resolutions do work it should be worth retrying with lower frequencies use the resolution tables context menu or edit the frequency setting manually to prevent this in general disable any timings and resolutions in the resolutions tab that don t match your display back to faq the new resolution are not centered on my monitor i can t see all of the image and there are black bars this is normal if you use new timings on a device for most monitors you can adjust the geometry using the monitor s controls for certain apple monitors you can use the systems displays control panel as most devices memorize this setting this usually needs to be done only once per resolution only for devices where neither of these methods works no controls available you would have to adjust the timing manually see the overscan section back to faq the resolution list does not contain some resolutions mentioned in the monitor manual the ddc information only has rudimentary information about the monitor s specifics therefore the generated frequencies and resolutions may not exactly match the monitor s specification however you usually get more and higher resolutions of course if the manufacturer provides precise timings you can use those back to faq there is a resolution missing that was available before installing displayconfigx simply use the button in the resolutions tab change the type to resolution or manual and specify the missing resolution after using the install button and a reboot the resolution should be back this way you also can introduce near arbitrary new resolutions back to faq how can i tweak the refresh rates in the resolutions tab double click a resolution then change the type to manual which allows you to change the refresh rate the program will limit your changes to what it thinks is safe to use if in doubt check with your monitor manual back to faq how can i specify the resolution timing details myself add a resolution using the button in the resolution tab change the type to timing and set the values to whatever you need there are some implicit limits which the program will automatically check and correct if the enable check mark is switched off that means that the timing violates the specification you entered in the monitor tab keep in mind that macosx will drop resolutions which are redundant as in they have the same size and approximately the same refresh rate back to faq how can i optimize the image quality on my multi sync monitor usually the default method works quite well sometimes you can get still better results by manually tweaking the timing though reasons would be overall poor convergence and contrast change the type to manual and experiment with slower refresh rates if that helps your monitors electronics are not adequate for high speed timings the cables have too strong dampening ferrite dampening decreases signal crispness or the graphic card has a low quality clut poor convergence on the left side change the type to timing and increase the horizontal back porch poor convergence on the right side change the type to timing and increase the horizontal front porch generally instable looses sync change the type to manual and decrease the refresh rate or change the type to timing and increase the syncs back to faq do high refresh rates ware out monitors faster as long as you respect the specification of the monitor in particular the upper limit on the horizontal frequency using high frequencies should not affect the monitor in general they die by age usually 7 12 years high quality equipment may last longer mostly because the condensers degrade and some other parts vary over long periods of time which may affect the usable frequency range i have seen a lot monitors aging and some dying using high frequencies never seemed to have any significant effect as long as the monitor specification is not violated back to faq are hdtv monitors supported basically yes of course you have to get an adapter first unless you are lucky and your tv has dvi or vga input i don t have much experience with hdtv myself but many people have tried and had success tweaking the timings for adequate display before you start you should have a look at after rebooting monitor stays blank in case you fool things up or the device does not understand the timing for whatever reason a timing to start with would be some flavor of 480p 720 480 60hz or if your device is fast enough 720p 1280 720 60hz see the timing list for the necessary details there are dedicated timing types for 480p and 720p which will limit your changes to a timing to what complies with the limits for that type of device the default should work on most hdtv devices some general limits for hdtv resolutions are horizontal scan rate and vertical total must match 480p sdtv 720 480 60hz vertical total 525 lines horizontal scan rate 31 50 khz this is 16 10 5 but meant for either 16 9 or 4 3 and will not yield correct aspect ratios used as either unless your tv uses some boxed mode 720p hdtv 1280 720 60hz vertical total 750 lines horizontal scan rate 45 00 khz 16 9 this is what i would recommend for the average hdtv device 1080p hdtv 1920 1080 50hz vertical total 1152 lines horizontal scan rate 66 00 khz 16 9 this one is very fast and was mentioned in early specification drafts hardly any device can handle it some tweaking is usually required to have the borders of the image match the tv tube see the overscan section back to faq how to get rid of overscan the following rules might help to reduce over scan some part of the image is not visible or under scan a black border around the image move to top decrease vertical back porch and increase vertical front porch move to left decrease horizontal back porch and decrease horizontal front porch move to bottom increase vertical back porch and decrease vertical front porch move to right increase horizontal back porch and decrease horizontal front porch make image less tall increase both vertical porches and decrease vertical active by sum of these porch changes make image less wide increase both horizontal porches and decrease horizontal active by sum of these porch changes fix the aspect ratio calculate the desired width in active pixels e g 480 vertical lines at 16 9 yields 16 480 9 854 horizontal pixels calculate a scaling factor the new horizontal active divided by old horizontal active so in the example 854 720 1 1861 then multiply all four horizontal values active front porch sync and back porch with the required factor and round up preferably to multiples of 8 keep vertical values and the horizontal frequency as they were the syncs don t matter much as long as they are long enough the beam is not visible during sync in doubt leave them alone timing relation wise the totals matter and can affect screen size an timings when fixing overscan the should be kept the same here is the somwhat simplified precedure to get rid of overscan assuming you start with a valid timing have a coffee this procedure will take some 15mins use the test screen image size test and note t...