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Old 06-04-05, 01:48 AM   #13
spikebike
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

I have a 6600GT and a Dell 2001FP (1600x1200). The modeline worked but:
(--) NVIDIA(0): DFP-0: maximum pixel clock: 155 MHz
(**) NVIDIA(0): Mode "1600x1200": 146.0 MHz, 68.1 kHz, 55.0 Hz

Anyone have a 1600x1200 modeline a bit closer to 155 MHz?

At least it's working, granted it's at 55Hz.
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Old 06-04-05, 02:15 AM   #14
jsgf
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Modeline "1600x1200" 155 1600 1704 1872 2128 1200 1201 1204 1222 +hsync +vsync
Works for me: 59.6Hz refresh.
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Old 06-05-05, 03:29 AM   #15
sparkplug
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

It all works now, many thanks.

Dave
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Old 06-06-05, 05:06 AM   #16
koef
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

With a FX5200:

Code:
 (--) NVIDIA(0): DFP-0: maximum pixel clock: 135 MHz
Really annoying. With 1.0-7174 I could get my FX5200 to output 162 MHz DVI clock and run 1920x1200 on a Dell 2405FPW.

Isn't there some (undocumented) option to override the DVI pixel clock maximum?
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Old 06-06-05, 06:53 AM   #17
alex31
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

I had the same problem with my sony 23" at 1920x1200, i have
resolved the problem using an interleaved resolution, it's work,
even without the Option "IgnoreEDID" "1" hack.

i use this modeline :
Modeline "1920x1200@60i" 87.66 1920 1952 2280 2312 1200 1227 1233 1261 i
nterlace

I first was afraid that inlerlace mode would exhibits nasty effect when rendering
in openGl @ high framerate, but no, the rendering is as good as usual.

Alexandre
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Old 06-06-05, 07:15 AM   #18
koef
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Excellent! And no interlacing artifacts at all... I wonder if the DVI signal is even actually interlaced with this modeline.

Also, the panel detects a 154 MHz signal, not 87.7 Mhz or 175 MHz.

Last edited by koef; 06-06-05 at 07:29 AM.
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Old 06-06-05, 02:06 PM   #19
freelsjd
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

I have a Dell 2000FP and these work-arounds did not help. I have resorted to the previous version of the nvidia drivers in order to use my monitor again at it's native resolution of 1600x1200. I am a little perplexed as to why a new driver would have less capability !?!
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Old 06-07-05, 12:22 PM   #20
hamsta
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Quote:
Originally Posted by freelsjd
I have a Dell 2000FP and these work-arounds did not help. I have resorted to the previous version of the nvidia drivers in order to use my monitor again at it's native resolution of 1600x1200. I am a little perplexed as to why a new driver would have less capability !?!
It is just a bug. The driver checks the pixel clock incorreclty and the pixel clock tells something about 150 Mhz. This strict checking was implemented in 7664 and has this nasty bug at the moment. You can just wait for the next version, use the one before 7664 or try to workarround the problem with a specially crafted modeline for your monitor.

But, if you haven't had any problems with the old driver, why do not just use this one until the new release will be out?


HTH,

hamsta
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Old 06-07-05, 09:12 PM   #21
freelsjd
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Sure. I am still happy with my card and older driver. The way this thread sounded, the "feature" was going to remain. If it gets fixed, no problem, I can wait and keep using the old driver.

Thanks NVIDIA for supporting Linux and making your driver available. I have personally purchased at least a dozen Nvidia cards just because they had a Linux driver.
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Old 06-08-05, 08:28 AM   #22
beczka2005
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Hi All,

I have the same problem as you all described and had to drop my refresh rate in order to have my 1920x1200 resolution.

Q1:
Is this a *bug* or a *fix*?! With this lower pixel clock I run only at about 55Hz. I remember when my system came stock with winxp the refresh rate was around 75Hz, that would be the refresh rate if I had the 350MHz pixel clock.

Q2:
Is this *feature* here to stay? If so, does that mean for the last two years I have been over-refreshing my screen? I don't see any damage, everything looks as good as new so what's the problem?

Q3:
I still find I cannot wake my system with the new driver. The screen just doesn't come back. I had no problems with the previous driver. Some other *feature* I am unaware of?


Thanks All,
-Raf
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Old 06-09-05, 07:22 AM   #23
Castr0
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

I have this exact same problem with my dell 2005fpw monitor except at 1680x1050 resolution is there a modline that would fix my issues these are my current modlines

Section "Modes"
Identifier "16:10"
ModeLine "1680x1050" 146.2 1680 1960 2136 2240 1050 1080 1086 1089 -hsync +vsync
Modeline "1680x1050" 147.14 1680 1784 1968 2256 1050 1051 1054 1087
Modeline "1680x1050" 188.07 1680 1800 1984 2288 1050 1051 1054 1096
Modeline "1680x1050" 214.51 1680 1800 1984 2288 1050 1051 1054 1103
Modeline "1680x1050" 256.20 1680 1808 1992 2304 1050 1051 1054 1112
Modeline "1920x1200" 246.59 1920 2064 2272 2624 1200 1201 1204 1253
Modeline "1920x1200" 282.74 1920 2072 2280 2640 1200 1201 1204 1260
Modeline "1920x1200" 337.58 1920 2072 2288 2656 1200 1201 1204 1271
EndSection

thanks in advance
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Old 06-10-05, 07:42 AM   #24
beczka2005
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Default Re: 7664 and 1600x1200 (maximum pixel clock?)

Hi,

Just look at the pixel clock from your xorg log files, go on the web and search for a modeline generator. You have your resolution, your pixel clock, that's all you need.

Raf
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