256 replies to this topic

[Teraphy]

December, 2007:
Use the enhancer page to automatically fix Windows XP INF files: http://www.laptopvideo2go.com/enhancer
Detailed INF fix thread explanation

 

Thanks to Ministeve, our testing guru, we have found a solution to the Black Bar issue.

BlackBar PHP page to fixer the issue...

[Information]
EDID Information is found in the registry at:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY\

When running older drivers that properly obtain an EDID the following proper tags are obtained:

TOS5082 - 1024x768
TOS5086 - 1400x1050
TOS5088 - 1600x1200

When running newer drivers that do not properly obtain an EDID (black bar) the following tags are obtained: NVDXXXX. In some cases users may obtain an actual TOSXXXX key with faulty information. This will be investigated furthur if a lot of people have this case.

This issue is due to the fact the BIOS contains improper display information and the more recent display drivers are not correctly obtaining the displays EDID. We have chosen to take the easy driver route on this matter by not having people update the BIOS.

4.17.00.41.C5 <- Bad(contains black bar issues)
4.17.00.41.C7 <- Bad (contains black bar issues)
4.17.00.59.F9 <- Good BIOS

If you have a BIOS not listed. Please extract and post it for further study.
For BIOS utilities see the BIOS Utilities post.

-- Edit --
Attachment removed. Thanks to all of those who attached their information. It was quite helpful in diagnosing the issue.

The new attachment is a 61.76 zip file containing 3 INF files for the above screen sizes.

Attached Files

•  61.76_Black_Bar_Fixes.zip   37.13K   12785 downloads

Edited by Teraphy, 21 December 2007 - 11:54 AM.

[mobilenvidia]

Teraphy shall I implement those changes in all my INFs as of v30.19+
I'll leave the INF with the 3 EDID's mods disabled then the user just has to edit the INF remove the apropriate ';' and install.
No input required from us, just a page to show the masses how to do it.

Unless your keen to make these mods on an individual basis.


Pieter.

[Teraphy]

I'd like to see how it goes first. If all works well on displays other than Ministeve's maybe we can figure out a better way to implement them. I just wrote it as is because it was clear cut for me to write that way. I am sure all 6 aren't required. We can most likely cut it down and use Flags0-3 instead.

[Teraphy]

Alright, ministeve. What am I not doing right -- I've covered both product tags. I've been looking at way too many EDIDs lately I thought I got this setup right. Unless it's DFPAsDefaultMonitor. (but that's why I covered both tags)

boris are you on 2K or XP?
The attached is the old INF? I will take a look at it but I know that is a simple key fix. The newer drivers require a more complex key fix that has been deciphered. The error lies in the newer driver builds and the bad BIOS information.

[Stories]

US Release Toshiba Satellite 5105-S502 (same as a 5105-S501 just with XP Pro) and has a 1400x1050 resolution.
BIOS: 4.17.00.41.C5
EDID Info RegEdit: Contains both NVD0400 and TOS5086

I'm currently running the 52.16 drivers, but forgot which INF, I think 9.62 (or something like that), and it works without a black bar, although my TV-Out function is broken.

Attached Files

•  edid_disp.txt   43.69K   836 downloads

[Craig Corp]

Hi Theraphy,

I tried your 61.72 inf with the 61.72 drivers and I still get the black bar, max res 1372x1050, problem as well. You already have my EDID info. Darn, I really hoped we had a fix this time

[ministeve]

Alright, ministeve.  What am I not doing right -- I've covered both product tags.  I've been looking at way too many EDIDs lately I thought I got this setup right.  Unless it's DFPAsDefaultMonitor. (but that's why I covered both tags)

There's nothing wrong with the infs. The only differences with mine are that DFPAsDefaultMonitor is missing (but it is not influent, if my tests are correct) and that I have only OverrideEdidFlags0.
Currently I'm running 61.80 with no black bar. Enabling/disabling the fix directly in the registry (under services/nv) toggles the black bar on my system. In my opinion this is quite a strong evidence that it has worked for me. Find attached my inf, it's just plain 30.15 with DFPAsDefaultMonitor and the fix added.

Warning: the following inf is just an example and it should not be used. The fix it contains is system-dependent. The inf works for my system but is not likely to work for others.

Attached Files

•  nv4_disp.inf   55.41K   1277 downloads

Edited by ministeve, 18 July 2004 - 07:36 AM.

[Teraphy]

I have good information to support the top three resolutions. (1024x768, 1400x1050, 1600x1200) with those 2 black bar BIOSs. If anyone runs another BIOS then please post your information. Otherwise I am done collecting info. Thanks to everyone.

@Craig - ministeve says it works I have no doubt that we're overriding the bad EDID with good stuff. It's just this key has to do some matching to determine which EDID to override and this is the part we're a little iffy on.

[Craig Corp]

MiniSteve,

I just tried the inf you have attached above with 61.80 downloaded from the link in the modified infs section of this site. I have uninstalled and installed it twice now and get the same major problem. On my system, I get only a white screen with black streaks in it with this driver/inf combo - it will not go to the to the windows logon screen. Any ideas what the problem is?

5105 S501, 32 MB GeForce4 440GO

[ministeve]

MiniSteve,

I just tried the inf you have attached above with 61.80 downloaded from the link in the modified infs section of this site. I have uninstalled and installed it twice now and get the same major problem. On my system, I get only a white screen with black streaks in it with this driver/inf combo - it will not go to the to the windows logon screen. Any ideas what the problem is?

5105 S501, 32 MB GeForce4 440GO

Craig Corp, the inf I attached contained Teraphy's tweak for 1024x768; it is normal that it garbles your screen. It was just meant to witness I'm using a plain inf with the tweak.

Did you succeed int going back to a working config?

We are now doing some extra tests to understand what might prevent the tweak from working in your system.

[Craig Corp]

Thanks for your concern Ministeve. I just rebooted into VGA mode, uninstalled 61.80, rebooted and installed an older driver (44.68), everything is working fine again. I'd be happy to try out further 1400x1050 inf/driver combos when you have them