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Using a 20" display with PB


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Using a 20" display with PB
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flail
Senior Member
 
Join Date: Dec 2004
 
2005-01-15, 18:22

Quick question... probably easy

If I wanted to use an external monitor--20" apple cinema display with 1680 x 1050 res---for a 12" PB with 1024x768 resolution, would that be possible? If so how?

Thanks everyone
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Luca
ಠ_ರೃ
 
Join Date: May 2004
Location: Minnesota
 
2005-01-15, 18:37

Yep. It's officially supported according to Apple. Your 12" PowerBook should have a mini-DVI port and an adapter to let you use a DVI monitor on it. Just plug the display's DVI cable into the PowerBook's DVI port and it should work. You can configure the two displays (positions relative to one another, resolution, etc) using System Preferences. It's handy, when you have either "Desktop" or "Displays" open, it'll pop up another window on your secondary display to let you adjust settings for it.
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adam_tj
Member
 
Join Date: Oct 2004
Location: OUTSIDE of Redmond
 
2005-01-15, 18:39

Possible. Just plug it right in to anything in the powerbook line, and it will work. Im typing this on a Gateway EV70 @ 1280x1024 connected to a 12" powerbook.

Hope this helps.

EDIT:Im a slower type than Luca, so this post is redundant.

What's the difference between a Democrat and a bucket of crap? The bucket.
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BlueRabbit
Veteran Member
 
Join Date: May 2004
Location: San Francisco, CA
 
2005-01-15, 18:43

From here:

Quote:
NVIDIA GeForce FX Go5200 graphics processor with AGP 4X support and 64MB of DDR SDRAM video memory (12-inch models)

Dual display and video mirroring: Simultaneously supports up to 1024 x 768 pixels on the built-in display and up to 2048 x 1536 pixels on an external display, both at millions of colors (7)
So it looks like it should work. I think I've seen that set up in the Apple store before. The PB comes with a mini-DVI port on the side, and adaptors to plug that into VGA and normal DVI ports. From there it's just a matter of plugging in the cable.

Edit: Argh! I type slower than the both of you! But my post had a link and a quote.
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flail
Senior Member
 
Join Date: Dec 2004
 
2005-01-15, 18:44

Thanks, I'm glad to know that it's possible...

But I'm still confused, how can the hardwar/video card in the PB display a higher resolution than it is capable of displaying on the PB screen itself?
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BlueRabbit
Veteran Member
 
Join Date: May 2004
Location: San Francisco, CA
 
2005-01-15, 18:48

Quote:
Originally Posted by flail
Thanks, I'm glad to know that it's possible...

But I'm still confused, how can the hardwar/video card in the PB display a higher resolution than it is capable of displaying on the PB screen itself?
I think they can't fit in a 12" screen with that high of a resolution, so they just left it at 1024x768. The graphics card is essentially using only half of its potential resolution to run the PB screen. In other words, the bottleneck for the 1024x768 screen is in the screen, not the graphics card.
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Luca
ಠ_ರೃ
 
Join Date: May 2004
Location: Minnesota
 
2005-01-15, 18:52

Because that's how video cards are made. You can switch resolutions, right? You can run your display at 640x480 or 800x600 if you want. Or look at the 15" and 17" PowerBooks. They both use the exact same video chip, yet the 15" runs at 1280x854 while the 17" uses 1440x900. Video cards are simply designed to be able to drive displays at just about any resolution possible. Even old ones can run a 1600x1200 display. Take any $30 off-the-shelf video card today and I guarantee you it'll support a resolution up to 1920x1200 or something crazy high like that.

EDIT: Yeah, what BlueRabbit said. The 12" PowerBook uses an LCD that has exactly 1,024 columns of pixels and 768 rows of pixels, so you can't physically display more pixels. CRTs don't use physical pixels the way LCDs do, so you can display very high resolutions on CRTs.
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