Re: nvidia twinview broken
On Sun, 2008-08-24 at 14:31 +0530, Ritesh Raj Sarraf wrote:
> Hi All,
> I need some help. I hope someone can acknowledge the bug that I'm going to describe and help me root-cause and fix it.
> I have a Dell XPS M1210 notebook which comes bundled with nvidia GeForce Go 7400 card.
> 01:00.0 VGA compatible controller: nVidia Corporation G72M [GeForce Go 7400] (rev a1)
> It is around 2 years old laptop, and in the beginning I was able to use this laptop with TwinView configuration. It worked perfect.
> Sometime later during kernel upgrade and nvidia driver upgrades, TwinView broken. I'm sorry, I can't really recollect when really that happened.
> Single View still works for me. But I badly want to use my External IBM Monitor at work.
> Here's my problem description:
> When I start X with the External Monitor connected, the screen goes blank with no message. There is no X display on the external monitor. But X draws an Extended Desktop because on the laptop's display, only half of the virtual desktop is drawn. The External Monitor behaves as if nothing is connected to it.
> My first suspect was that the VGA port might have gone bad. But I think that might not be the case. This is how I concluded that:
> (II) NVIDIA(0): NVIDIA GPU GeForce Go 7400 (G72) at PCI:1:0:0 (GPU-0)
> (--) NVIDIA(0): Memory: 262144 kBytes
> (--) NVIDIA(0): VideoBIOS: 05.72.22.21.fd
> (II) NVIDIA(0): Detected PCI Express Link width: 16X
> (--) NVIDIA(0): Interlaced video modes are supported on this GPU
> (--) NVIDIA(0): Connected display device(s) on GeForce Go 7400 at PCI:1:0:0:
> (--) NVIDIA(0): IBM L191p (CRT-0)
> (--) NVIDIA(0): AUO (DFP-0)
> (--) NVIDIA(0): IBM L191p (CRT-0): 400.0 MHz maximum pixel clock
> (--) NVIDIA(0): AUO (DFP-0): 330.0 MHz maximum pixel clock
> (--) NVIDIA(0): AUO (DFP-0): Internal Dual Link LVDS
> (II) NVIDIA(0): Assigned Display Device: DFP-0
> (==) NVIDIA(0):
> (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
> (==) NVIDIA(0): will be used as the requested mode.
> (==) NVIDIA(0):
> (II) NVIDIA(0): Validated modes:
> (II) NVIDIA(0): "nvidia-auto-select"
> If the VGA port was bad, X wouldn't have been able to auto-detect the External Monitor. My xorg.conf doesn't have any mention of the external monitor.
> I strongly believe this to be a Kernel or nvidia driver problem. That is because I have used this configuration (TwinView) before. I believe it is not a hardware failure.
> Any help is appreciated.
> ￼ ￼
> If possible, Please CC me when replying. I'm not subscribed to the list.
Look at xrander --auto
Man xrander and look at this here:
Let us know what happens if you run xrandr --auto.
Damon L. Chesser <email@example.com>