Re: [Bugme-new] [Bug 13304] New: ehci_hcd module causing problems in using usb head phone

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On Wed, 24 Jun 2009, abhishekkumar wrote:

> > Your dmesgafter.txt file is identical to the dmesgbefore.txt file.  
> > Weren't there any new kernel messages while the test was running?  
> > There should have been some messages when the headphone was plugged in.
> >
> >   
> Both dmesg was taken after plugging the headphone, but one is taken 
> before recording and the other after recording.

When the headphone was plugged in, there should have been a line like 
this:

usb 3-2.3: new full speed USB device using ps3-ehci-driver and address 5

But there is no such line in the log file.

> The lines which showed hardware bug according to you were  still in that 
> dmesg log.

You mean these lines?

> [   33.136461] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
> [   33.136473] hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0000

They should not be there, but they are caused by a different bug, a
problem with the OHCI controller.  They are unrelated to EHCI and the
headphone.  You might want to copy the "registers" file under
/debug/usb/ohci/sb_06.

Do you have CONFIG_PM enabled in your kernel?

> Initially the recording from headphone works ,but when I try to stop 
> using ctrl+c , it goes on printing  "^c" character ,then prompt keeps 
> coming continuosly.

What happens if you stop the recording by using "kill" over the network 
connection?

> Finally, not able to use my keyboard and mouse. If I rmmod EHCI things 
> work fine , but I want to use camera ,which uses higher bandwidth.
> Whatever log I have sent you is by remotely logging and copying the 
> files from the PS3 system.

I understand.  This is a very difficult problem to investigate.

Can you try plugging the hub, together with the mouse, keyboard, and
headphone, into a regular PC running Linux?  If it works, it will
indicate that the software is probably okay and something is wrong with
the PS3 hardware.

Alan Stern

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