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Old 03-19-07, 06:08 PM   #1
Bloodsurfer
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Default max resolution of a 7900GS with vesafb

Hello,

I just want to know the highest resolution my 7900GS offers.

I run it with vesafb (nvidiafb doesn't work with the drivers of course, and vesafb-tng doesn't work with amd64) and can't get it to more than 1280x1024. Whatever mode I enter larger than 794 I get only "wrong modeline"... I know vesafb can do more - I run it e.g. in 1400x1050 (with vga=838) on my notebook (but there with an ATI Card).

Is 1280x1024 really the best resolution my card has to offer, or what's the trick to get more out of it? I'd really like to use the native res of my screen, 1600x1200.

Could it be possible that vesafb can only do more than that in 32 bit mode?
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Old 03-25-07, 11:24 AM   #2
gilboa
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Default Re: max resolution of a 7900GS with vesafb

Bump.

I wondered the same but never found a solution.

- Gilboa
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Old 03-27-07, 05:18 AM   #3
Vaterland
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Default Re: max resolution of a 7900GS with vesafb

It appears to be 1280x1024 if I do vbetest in terminal under X, and 1024x768 if I do this test in the console. Either way, we are screwed unless we can modify vbe somehow.
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Old 03-27-07, 06:20 AM   #4
gilboa
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Default Re: max resolution of a 7900GS with vesafb

Quote:
Originally Posted by Vaterland
It appears to be 1280x1024 if I do vbetest in terminal under X, and 1024x768 if I do this test in the console. Either way, we are screwed unless we can modify vbe somehow.
... Baaah.
As far as I know VBE 2.0 support 1600x1280 while VBE 3.0 supports >1920.
In theory, vga=0x322 should switch to 1600x1280, but something seems to be broken.

- Gilboa
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DEV-NG: Intel S2600C0, 2xE52658V2, 32GB, 4x2TB, GTX680, F19/x86_64, Dell U2711.
DEV: Intel S5520SC, 2xX5680, 36GB, 5x320GB, GTX550, F19/x86_64, Dell U2711 (^).
SRV: Tyan Tempest i5400XT, 2xE5335, 8GB, 4x2TB, 9800GTX, F19/x86-64, Dell U2412.
LAP: ASUS N56VJ, i7-3630QM, 16GB, 1TB, 635M, F19/x86_64.
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Old 03-27-07, 09:05 AM   #5
Vaterland
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Default Re: max resolution of a 7900GS with vesafb

Quick question - do you have a tv connected to the video card? I'm going to unplug the tv cord and see what happens when I get back home.
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Old 03-27-07, 12:32 PM   #6
gilboa
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Default Re: max resolution of a 7900GS with vesafb

... Yes.
But I saw the same problem on a single head machine.

- Gilboa
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DEV-NG: Intel S2600C0, 2xE52658V2, 32GB, 4x2TB, GTX680, F19/x86_64, Dell U2711.
DEV: Intel S5520SC, 2xX5680, 36GB, 5x320GB, GTX550, F19/x86_64, Dell U2711 (^).
SRV: Tyan Tempest i5400XT, 2xE5335, 8GB, 4x2TB, 9800GTX, F19/x86-64, Dell U2412.
LAP: ASUS N56VJ, i7-3630QM, 16GB, 1TB, 635M, F19/x86_64.
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