pwc
[Top] [All Lists]

Re: [pwc] pwc driver fails and cannot be removed/reloaded from/to kernel

To: Philips Webcam Linux Driver <>
Subject: Re: [pwc] pwc driver fails and cannot be removed/reloaded from/to kernel
From: "" <>
Date: Wed, 15 Jun 2005 11:19:44 +0300
On Wed, Jun 01, 2005 at 02:02:52PM +0200, Luc Saillard wrote:
> Yes but the -stable kernel will not resolv your problem if something is
> broken in usb or serial. I mean a lot of code ...
> 
> Can you try 2.6.12-rc5 like Andrew Morton asks ?

I also tried 2.6.12-rc6. Actually the problem is more severe in
rc-kernels, than in stable kernels. I do hope current rc6 defenetly
won't be the official 2.6.12

In 2.6.11.11 and in 2.6.11.12, the ps/2-keyboard and serial-mouse
doesn't get dead when pwc driver fails. In rc5 and in rc6 kernels they
do.

It's all in the bug thread
< http://bugzilla.kernel.org/show_bug.cgi?id=4510 >,
but seems like pwc driver cannot be unloaded from the kernel as long as
snd_usb_audio is in use. After I kill mixer_applet2 (which is Volume
Control gauge in GNOME Panel), the pwc driver gets restarted by khubd.

In rc-kernels, killing the mixer_applet2 also makes a Oops crash.

There seeem to be at least 3 separate problems, which are related.
May be, the first problem is insufficient power for the Quickcam, but
it then triggers few software bugs.

greg told, the keyboard + mouse problem would be fixed in stable
kernels, so I guess there was a bug then. I wonder why rc-kernels have
it unfixed.

> Another test will be to not compile the ps/2 support and test your computer
> using the network. Sometimes, on a laptop, le ps/2 module is broken by
> another device, so i want you to try to not use the ps2 to see if this module
> is the problem.

OK, could try that also, but seems like the keyboard+mouse problem is
now fixed in stable kernels.

They said, I should ask you about the pwc-error codecs dmesg-log gets
before the pwc driver fails. Could it be just because either the usb bus or
cpu is too slow? Lots of buffer overrun-errors. (-63).

// jouni


_______________________________________________
pwc mailing list

http://lists.saillard.org/mailman/listinfo/pwc

<Prev in Thread] Current Thread [Next in Thread>
  • Re: [pwc] pwc driver fails and cannot be removed/reloaded from/to kernel, Jouni.Lohikoski@iki.fi <=
Admin

Disclaimer: Neither Andrew Taylor nor the University of NSW School of Computer and Engineering take any responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU