Re: Reset on USB-Bus at Shutdown?

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On Sun, 7 Nov 2010, Daniel Spannbauer wrote:

> Am 07.11.2010 03:24, schrieb Alan Stern:
> > On Sat, 6 Nov 2010, Daniel Spannbauer wrote:
> >
> >> Hello,
> >>
> >> I use on m HTPC (Ubuntu Lucid Lynx, Kernel 2.6.25) a LCD-Display from
> >> Soundgraph (http://www.soundgraph.com/oem-lcd-feature-en/). This Display
> >> is connected to the USB-Bus to show several messages.
> >
> > What chipset does the computer use?  What does "lspci" show?
> 
> Hello Alan,
> 
> Here is the Output of "lspci":
> root@vdr:~# lspci
> 00:00.0 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory 
> Controller (rev a2)
> 00:01.0 ISA bridge: nVidia Corporation MCP78S [GeForce 8200] LPC Bridge 
> (rev a2)
> 00:01.1 SMBus: nVidia Corporation MCP78S [GeForce 8200] SMBus (rev a1)
> 00:01.2 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory 
> Controller (rev a1)
> 00:01.3 Co-processor: nVidia Corporation MCP78S [GeForce 8200] 
> Co-Processor (rev a2)
> 00:01.4 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory 
> Controller (rev a1)
> 00:02.0 USB Controller: nVidia Corporation MCP78S [GeForce 8200] OHCI 
> USB 1.1 Controller (rev a1)
> 00:02.1 USB Controller: nVidia Corporation MCP78S [GeForce 8200] EHCI 
> USB 2.0 Controller (rev a1)
> 00:04.0 USB Controller: nVidia Corporation MCP78S [GeForce 8200] OHCI 
> USB 1.1 Controller (rev a1)
> 00:04.1 USB Controller: nVidia Corporation MCP78S [GeForce 8200] EHCI 
> USB 2.0 Controller (rev a1)
...

It's not surprising that nVidia has this problem, considering its other 
problem.

> >> And how can I solve this?
> >
> > Can you try using a 2.6.37-rc1 kernel?
> 
> Ok, will try it. As I told you, I testet the 2.6.36 with the patches for 
> the NVIDIA-Chipset posted by you, but there was no change.

Oh.  Then 2.6.37-rc1 probably won't help, but it's still worth a try.

What happens if you unload the display's driver before shutting down?

Alan Stern

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