Re: 2.6.21-rc6 USB Keyboard hangs (EHCI/UHCI/HID)

Alan Stern <[email protected]>
Newsgroups gmane.linux.usb.devel,gmane.linux.kernel
Message-ID <[email protected]>
On Sat, 14 Apr 2007, Matthias Andree wrote:

> I arrived at the computer today, to find khubd in D state again, but
> unfortunately, it does not show up in Alt-SysRq-T output. Do kernel
> threads show up there at all? 2.6.18.8-0.1 with SUSE patches on openSUSE
> 10.2.

As far as I know, all tasks including kernel threads should show up.  They 
certainly do on my machine.  However you're the second person to report 
that khubd doesn't appear after getting stuck in a D state.

Clearly something strange is going on.  I wish I knew what it was...

> I had stopped usbmon before however, so I don't know what the events
> have been leading to this lockup. Sorry. I'll leave usbmon running now.

Something else you can do is turn on CONFIG_USB_DEBUG and then check the
dmesg log for anything significant.

Alan Stern


-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.