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How to change PHISICAL screen size of an iMac?
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pyro-x
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PostPosted: Mon Apr 05, 2004 6:11 pm    Post subject: How to change PHISICAL screen size of an iMac? Reply with quote

Hi everyone!

Finally i managed to load XFree in my iMac and i'm running at 1024x768x24bpp (only 8bpp, and 24bpp worked). But the screen doesn't fill completly the monitor area. I mean i have black bars around the usable display area.

I saw at another iMac still loaded with MacOS 9 that this is adjustable from SOFTWARE!. There (at control panel) you can move the display area, adjust it size, palalelogram, brightness, contrast, etc...

Well, those things you do with the manual controls of your monitor are done from software in the Apple way. And the big question... Is there any similar utility for linux???, so i can adjust all this settings and expand my desktop to use the whole phisical space of the integrated monitor.

Many thanx in advance
Pyro-X
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jdv
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PostPosted: Mon Apr 05, 2004 8:53 pm    Post subject: Re: How to change PHYSICAL screen size of an iMac? Reply with quote

pyro-x wrote:
And the big question... Is there any similar utility for linux???, so i can adjust all this settings and expand my desktop to use the whole phisical space of the integrated monitor.

If I remember correctly, you have to use the xvidtune utility to adjust the settings. When you've gotten it the way you want it, xvidtune will output a modeline that you'll have to put XF86Config in order for X to use the same settings every time you start it...
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pyro-x
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PostPosted: Wed Apr 07, 2004 2:16 pm    Post subject: Re: How to change PHYSICAL screen size of an iMac? Reply with quote

jdv wrote:
pyro-x wrote:
And the big question... Is there any similar utility for linux???, so i can adjust all this settings and expand my desktop to use the whole phisical space of the integrated monitor.

If I remember correctly, you have to use the xvidtune utility to adjust the settings. When you've gotten it the way you want it, xvidtune will output a modeline that you'll have to put XF86Config in order for X to use the same settings every time you start it...


Hi, with xvidtune i can control some aspects of this, i can get a little wider screen, but i can't still use the whole space available, and i can't control other things like the geometry of the monitor (palalelogram, trapezoid, etc...). I think xvidtune can do the trick in some aspects, but it is not the application that can replace the Apple one, because with this you control the way the graphics card send it's signal to the monitor. In the other hand with MacOS i was able to modify my monitor settings as if i were dealing with the phisical controls at my other computer monitor (Sony 17'' CRT).

Perhaps i'm totally wrong, but i think these are different things :?:


Thanx,
Pyro-X
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jdv
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PostPosted: Wed Apr 07, 2004 4:53 pm    Post subject: Re: How to change PHYSICAL screen size of an iMac? Reply with quote

pyro-x wrote:
Perhaps i'm totally wrong, but i think these are different things :?:

Yeah they probably are, but I'm afraid xvidtune is your best bet. I don't think there exist any other software for X that can change these settings...

Perhaps you could boot into MacOS, change the settings there, reboot into Linux and see if there's any change. I guess there won't be since you've probably already set it up the way you want it (in MacOS).

I don't know if the iMac stores the screen settings in the NVRAM or it's totally software based, but I think it's worth a shot. Of course it's a drag if you only have Linux installed on it...
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genfoo
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PostPosted: Thu Apr 08, 2004 7:51 pm    Post subject: Reply with quote

You also might want to look and see if you have the most recent firmware update for that machine .. I had problems similar to yours with a couple of imacs, but once I applied latest firmware updates from apple (from os9) they worked wonderfully.
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