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Old 11-06-06, 07:28 PM   #1
achilid
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Unhappy display corruption on GeForce 440 Go

Hi,

It's a Dell Latitude C840 with GeForce 440 Go. I'm using FC6, kernel 2.6.18-1.2798.fc6, with nvidia driver 8776. Under 1600x1400 the right & bottom side of screen is corrupted (jpg picture attached). The effictive good view area is just1400x1050. nvidia-bug-report.log also attached. Some additional info:
- using fallback driver "nv", the display is all fine
- lower the resolution (e.g. to 1400x1050) the problem still there
- change to some old version of nvidia driver doesn't help.

Any idea what's wrong? Thanks in advance!
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Old 11-06-06, 07:35 PM   #2
netllama
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Default Re: display corruption on GeForce 440 Go

X was running at 1400x1050 in your bug report. Please start X with the following command:
startx -- -logverbose 5

and then generate a bug report while the problem is present.

Also does this option have any impact?
Option "ExactModeTimingsDVI" "true"

Thanks,
Lonni
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Old 11-06-06, 08:04 PM   #3
achilid
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Default Re: display corruption on GeForce 440 Go

Hi Lonni,

Thank you very much for such a quick response!

Strange, it's supposed to run at 1600x1400 (it is if driver "nv" is used), but driver "nvidia" force it running at 1400x1050, and the margin area become mess.

with "startx --logverbose 5", new nvidia-bug-report attached.

Option "ExactModeTimingsDVI" "true" doesn't help.
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File Type: log nvidia-bug-report.log (88.6 KB, 186 views)
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Old 11-06-06, 10:42 PM   #4
netllama
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Default Re: display corruption on GeForce 440 Go

According to the EDID, 1400x1050 is the native resolution:
(--) NVIDIA(0): Detailed Timings:
(--) NVIDIA(0): 1400 x 1050 @ 60 Hz
(--) NVIDIA(0): Pixel Clock : 108.00 MHz
(--) NVIDIA(0): HRes, HSyncStart : 1400, 1448
(--) NVIDIA(0): HSyncEnd, HTotal : 1560, 1688
(--) NVIDIA(0): VRes, VSyncStart : 1050, 1051
(--) NVIDIA(0): VSyncEnd, VTotal : 1054, 1066
(--) NVIDIA(0): H/V Polarity : -/-
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Old 11-06-06, 11:30 PM   #5
achilid
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Default Re: display corruption on GeForce 440 Go

Quote:
Originally Posted by netllama
According to the EDID, 1400x1050 is the native resolution:
aha, could this be the problem: nvidia driver wrongly recognize the native resolution?

I'm pretty sure the screen is native 1600x1200. In Windows it's 1600x1200. And following is the X log when driver "nv" is used:
=========
......
(II) NV(0): Probing for EDID on I2C bus A...
(II) NV(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) NV(0): I2C device "DDC:ddc2" removed.
(II) NV(0): ... none found
(II) NV(0): Probing for EDID on I2C bus B...
(II) NV(0): I2C device "DDC:ddc2" registered at address 0xA0.
(II) NV(0): I2C device "DDC:ddc2" removed.
(II) NV(0): ... none found
(--) NV(0): CRTC 1 is currently programmed for DFP
(II) NV(0): Using DFP on CRTC 1
(--) NV(0): Panel size is 1600 x 1200
(II) NV(0): Panel is LVDS
(--) NV(0): VideoRAM: 65536 kBytes
(==) NV(0): Using gamma correction (1.0, 1.0, 1.0)
(II) NV(0): <default monitor>: Using hsync range of 31.50-75.93 kHz
(II) NV(0): <default monitor>: Using vrefresh range of 50.00-60.98 Hz
(WW) NV(0): Unable to estimate virtual size
(II) NV(0): Clock range: 12.00 to 350.00 MHz
......
=========

Any idea how to teach nvidia driver recognize the correct native resolution? Or do you need me provide any other information? Thanks!
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Old 11-06-06, 11:36 PM   #6
netllama
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Default Re: display corruption on GeForce 440 Go

Have you tested 1.0-9626?
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Old 11-07-06, 12:43 AM   #7
synixus
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Default Re: display corruption on GeForce 440 Go

Actually, I'm having the same issue with you on 1400x1050 & 1280x1024 as what show on the sshot. Running same card on Dell Inspiron 8200 here.

I can manage to get 1600x1200 work by adding;

Option "UseEDID" "0" &
Option "ExactModeTimingsDVI" "1"

Hope it will work for you w/ 8776. Cheer!
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Old 11-07-06, 02:20 AM   #8
achilid
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Default Re: display corruption on GeForce 440 Go

Quote:
Originally Posted by synixus
Actually, I'm having the same issue with you on 1400x1050 & 1280x1024 as what show on the sshot. Running same card on Dell Inspiron 8200 here.

I can manage to get 1600x1200 work by adding;

Option "UseEDID" "0" &
Option "ExactModeTimingsDVI" "1"

Hope it will work for you w/ 8776. Cheer!
Unfortunately it doesn't work for me. With option "UseEDID" the screen is totally messed, no matter with or without option "ExactModeTimingsDVI". But thank you very much anyway!
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Old 11-07-06, 05:51 AM   #9
synixus
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Default Re: display corruption on GeForce 440 Go

Hm, weird. I got this issue since version 7667, if I can remember correctly.
Are you sure you did disabled UseEDID? By default is enabled. On my xorg conf here I still run 1600x1200 on modeline here. I tested removing and restart X, still work. Could you post your xorg.conf here?

Thanks.
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Old 11-07-06, 12:08 PM   #10
achilid
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Default Re: display corruption on GeForce 440 Go

Quote:
Originally Posted by netllama
Have you tested 1.0-9626?
Perhaps I missed something, but I only find 1.0-9625 following http://www.nzone.com/object/nzone_do...etadriver.html
I tried it anyway, this time the screen is totally blank.
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Old 11-07-06, 12:18 PM   #11
achilid
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Default Re: display corruption on GeForce 440 Go

Quote:
Originally Posted by synixus
Hm, weird. I got this issue since version 7667, if I can remember correctly.
Are you sure you did disabled UseEDID? By default is enabled. On my xorg conf here I still run 1600x1200 on modeline here. I tested removing and restart X, still work. Could you post your xorg.conf here?

Thanks.
Yeah it's weird, because we seems have very similar problem. I remember initially nvidia driver works fine, but this problem started occuring since maybe more than 1 years ago, and I switched to "nv" since then.

Here the xorg.conf attached. Thanks!
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File Type: txt xorg.conf.nvidia.txt (1.3 KB, 283 views)
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Old 11-07-06, 04:34 PM   #12
achilid
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Default Re: display corruption on GeForce 440 Go

Quote:
Originally Posted by achilid
Perhaps I missed something, but I only find 1.0-9625 following http://www.nzone.com/object/nzone_do...etadriver.html
I tried it anyway, this time the screen is totally blank.
upgrade to 1.0.9629 (seems still a beta) from livna, after startx screen is totally blank, as is 1.0.9625. Again attached Xorg.log when running as "start -- -logverbose 5", in case it might be helpful.

Thanks you guys have been so patient & active to help me.
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File Type: log Xorg.0.log (29.8 KB, 190 views)
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