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brap
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Joined: 16 May 2004
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Location: Virginia, USA

PostPosted: Sun May 16, 2004 4:52 pm    Post subject: eMac sync rates? Reply with quote

I have an eMac with X running but the display is slighty off to the right and was wondering if this is because of the wrong horizontal/vertical rates or something else. If it's the rates I'd appreciate it if someone could give me the correct rates for the Monitor.

Thanks,

Jeremy Clark
Virginia, USA
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Nahamu
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Joined: 01 Jul 2003
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Location: Boston, MA

PostPosted: Mon May 17, 2004 6:03 pm    Post subject: eMac display information Reply with quote

First off, Google is your friend:
http://www.google.com/search?q=emac+sync+rate+display+vertical+horizontal

Page 43 of this document (5th entry on my example search):
http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/eMacOct02/emac.pdf
says that the horizontal scan rate is a fixed 72kHz
and provides a table indicating:

Code:
Resolution      Vertical Rate   Pixel Depth

640x480         138Hz           24bit
800x600         112Hz           24bit
1024x768        89.0Hz          24bit
1152x864        80.0Hz          24bit
1280x960        72.0Hz          24bit


(The table looks clean in my browser; I hope it does in yours.)

Hope this helps!
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brap
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PostPosted: Mon May 17, 2004 11:04 pm    Post subject: No Good... Reply with quote

I've been there before. Even knowing those doesnt change the X display at all. Its's still off center and xvidtune wont take any other configs.

Jeremy Clark
Virginia, USA
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Nahamu
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PostPosted: Tue May 18, 2004 2:51 pm    Post subject: fixing X Reply with quote

Can you post the snippet of your /etc/X11/XF86Config file? That might help... I would assume that you have a Monitor section that looks kind of like this (note the commas instead of a range):
Code:

Section "Monitor"
   Identifier    "eMac Monitor"
   HorizSync     72.0
   VertRefresh   72.0, 80.0, 89.0, 112, 138
EndSection

If not, you could try changing it to look more like that. If so, do you have the old KDE/GNOME LiveCD that came with a program to autoconfigure X? You could try that and examine the configuration file it generates to see if that works better (or perhaps you should emerge that progam, I don't remember its name... Xautoconfig?)

If all else fails, if you could provide a bit more detail about how you configured X that would probably help us help you.

[edit]I think the name of the package is actually xeasyconf[/edit]
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darkie
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PostPosted: Mon Jul 12, 2004 3:29 pm    Post subject: Reply with quote

same problem. the right side of the desktop stops early, leaving about a 1 inch gap of black. There is no way to adjust the desktop to move right some, and then increase its horiz width?

i am using the eMac modelines posted somewhere else on this fourms. I tried their horiz/vert rates, as well as the ones posted just above. both produce the same results.

using an 800MHz eMac, 512mb ram, using the nv driver, and I guess its a nVidia GF2 MX/MX400 (according to the pci probe that X -configure spits out)
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