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Old 10-17-09, 10:10 AM   #1
proycon
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Exclamation Twinview, external monitor out of sync on MacBook Pro 5,3

I'm trying to connect to an external monitor from a MacBook Pro 5,3 with a GeForce 9600M GT, with nvidia driver 185.18 on Ubuntu Karmic Koala. I use an official displayport to VGA convertor.

The problem is as folows :the image on screen is very odd, weird colours and lines, except for a small part on the left-side. It seems out of sync? Take a look at http://download.anaproy.nl/badscreen.jpg , which is a photo of the screen from someone else with the exact same problem I have.

All my attempts to fix it have thus-far been unsuccessful, I tried the options NoEdid, UseEdid, and even tried to explicitly set a modeline.

On my other system, I use this same monitor as primary monitor, without any problems.

I hope someone knows a solution, as I'm running out of options.
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Old 10-17-09, 12:13 PM   #2
AaronP
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

There are a couple of quirks with the driver's DisplayPort configuration right now that should be resolved in the first 195.* beta release. Please give that a try when it becomes available. Unfortunately, I can't give you an estimate as to when that will be released.
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Old 10-17-09, 02:23 PM   #3
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Hmm.. that's very unfortunate. Is this bug monitor-specific? Is there a chance I might get it to work with another monitor, possibly a DVI one instead of VGA?
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Old 10-17-09, 03:14 PM   #4
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Yeah, it depends on the DisplayPort sink device. E.g. it might work with one monitor or adapter and not another. If you have a passive DP-to-single-link-DVI adapter, then it'll show up to the driver as a DVI device and not a DP device.

Please try 190.40. If the driver reports that it's rejecting your monitor's native resolution due to DisplayPort bandwidth constraints, then it's running into the problem I'm thinking of that's resolved in 195.*. If it still shows the same corruption, then it's a different problem and I'll have to look into it.
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Old 10-17-09, 04:45 PM   #5
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Thanks for your tip! I installed 190.40 and this is definitely progress,now I no longer have the weird out-of-sync problem! However, the maximum resolution I could choose was 1280x1024, whilst the native resolution of my screen is 1680x1050. I'm already quite happy I at least have something on screen now, but it would of course be great it I could get it to work in the native resolution. Did I run into the DisplayPort bandwith constraint? I didn't see anything about it in the log. Any tips would be welcome!
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Old 10-17-09, 05:02 PM   #6
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

You may need to start X with "startx -- -logverbose 6" or use "nvidia-xconfig --mode-debug" and then restart X to see the bandwidth log messages. That does sound like the bug I fixed in 195.*.
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Old 10-17-09, 05:14 PM   #7
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Ok, I can now confirm that it is indeed that issue:

(II) Oct 18 00:09:05 NVIDIA(0): Validating Mode "1680x1050":
(II) Oct 18 00:09:05 NVIDIA(0): 1680 x 1050 @ 60 Hz
(II) Oct 18 00:09:05 NVIDIA(0): For use as DFP backend.
(II) Oct 18 00:09:05 NVIDIA(0): Mode Source: EDID
(II) Oct 18 00:09:05 NVIDIA(0): Pixel Clock : 146.25 MHz
(II) Oct 18 00:09:05 NVIDIA(0): HRes, HSyncStart : 1680, 1784
(II) Oct 18 00:09:05 NVIDIA(0): HSyncEnd, HTotal : 1960, 2240
(II) Oct 18 00:09:05 NVIDIA(0): VRes, VSyncStart : 1050, 1053
(II) Oct 18 00:09:05 NVIDIA(0): VSyncEnd, VTotal : 1059, 1089
(II) Oct 18 00:09:05 NVIDIA(0): H/V Polarity : -/+
(WW) Oct 18 00:09:05 NVIDIA(0): Mode is rejected: Mode exceeds available DisplayPort
(WW) Oct 18 00:09:05 NVIDIA(0): bandwidth.

I hope the fix is released soon.
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Old 10-20-09, 03:39 AM   #8
kabelgleichung
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Quote:
Originally Posted by AaronP View Post
You may need to start X with "startx -- -logverbose 6" or use "nvidia-xconfig --mode-debug" and then restart X to see the bandwidth log messages. That does sound like the bug I fixed in 195.*.
I have the same problem. Where can I get the 195.x driver? Could not find it on the ftp site.
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Old 10-20-09, 09:50 AM   #9
AaronP
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Quote:
Originally Posted by kabelgleichung View Post
I have the same problem. Where can I get the 195.x driver? Could not find it on the ftp site.
It's not available yet.
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Old 10-30-09, 04:15 PM   #10
proycon
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

I saw 190.x got promoted to official driver yesterday. I don't understand well how NVIDIA version numbers work, so I was wondering whether this means that 195.* beta releases are next in line to be released? Or will there be 191-194 releases as well? I'm trying to decide whether waiting for a little while pays off, or if it'll take longer than a month, in which I case I'll have to consider buying a new monitor. Is it possible to give (even if it is a very rough) ETA at this stage?
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Old 10-30-09, 04:31 PM   #11
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

I'm not allowed to give ETAs, I'm afraid. However, I can tell you that there's a chance there will be a 190.* refresh that has this fix backported to it. I can't say for sure whether the 190.* refresh will come out before or after the first 195.* beta. The major version numbers try to roughly match the corresponding Windows versions, though the version numbers on Windows are all wonky for reasons that I won't get into.
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Old 10-30-09, 05:03 PM   #12
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Default Re: Twinview, external monitor out of sync on MacBook Pro 5,3

Ok, thanks! A backport sounds most welcome. I'll hold on for a while then and will try every next driver release. Could you perhaps update this thread once you know the fix is released? Then I can verify whether it works.
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