Bug 7088 - usb bandwidth problem with low speed hardware
Summary: usb bandwidth problem with low speed hardware
Alias: None
Product: Drivers
Classification: Unclassified
Component: USB (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Greg Kroah-Hartman
Depends on:
Blocks: USB
  Show dependency tree
Reported: 2006-08-31 06:40 UTC by Marc Collin
Modified: 2008-03-29 22:21 UTC (History)
2 users (show)

See Also:
Kernel Version:
Tree: Mainline
Regression: ---

cat /proc/bus/usb/devices (971 bytes, application/x-tgz)
2006-09-01 10:01 UTC, Marc Collin
cat /var/log/messages (254.57 KB, application/x-tgz)
2006-09-01 10:03 UTC, Marc Collin
dmesg (18.53 KB, text/plain)
2006-09-16 20:46 UTC, Marc Collin
lsusb (234 bytes, text/plain)
2006-09-16 20:46 UTC, Marc Collin
messages (54.34 KB, text/plain)
2006-09-16 20:46 UTC, Marc Collin

Description Marc Collin 2006-08-31 06:40:46 UTC
Most recent kernel where this bug did not occur:
Distribution: Suse 10.1
Hardware Environment:amd 64 bits, asus a8n-vm motherboard
Software Environment: kde
Problem Description:
have some usb problem

i have a ups connected to the usb controler
on another controler i have an usb webcam

i get some strange problem, the webcam don't work, if the ups is connected

the ups is a slow device and seem to block all device...

if i remove the ups and connect a usb mouse, i get the same problem
a mouse is a slow device and block other usb device

with the (mouse or ups) and the webcam i get this error
spca5xx.c: init isoc: usb_submit_urb(0) ret -28
spca5xx.c: [spca5xx_open:3920] 
Comment 1 Greg Kroah-Hartman 2006-08-31 10:31:52 UTC
Can you provide the output of the /proc/bus/usb/devices file with everything
plugged in?  (as an attachment please).

And also all of the kernel log messages?

Also, can you try the 2.6.18-rc5 kernel out?  It has a much improved code for
handling the high/low speed issues in the ehci host controller.
Comment 2 Marc Collin 2006-09-01 10:01:32 UTC
Created attachment 8929 [details]
cat /proc/bus/usb/devices
Comment 3 Marc Collin 2006-09-01 10:03:37 UTC
Created attachment 8930 [details]
cat /var/log/messages
Comment 4 Marc Collin 2006-09-01 10:05:32 UTC
both file you asked are in attachment

i installed the 2.6.18-rc5 but not the source.... need to recompile webcam 

will do it this week
Comment 5 Marc Collin 2006-09-16 20:45:06 UTC

i tried with 2.6.18-rc5-git6-2-default kernel and i get the same problem

i join some files

Comment 6 Marc Collin 2006-09-16 20:46:01 UTC
Created attachment 9030 [details]
Comment 7 Marc Collin 2006-09-16 20:46:27 UTC
Created attachment 9031 [details]
Comment 8 Marc Collin 2006-09-16 20:46:55 UTC
Created attachment 9032 [details]

var log message
Comment 9 Natalie Protasevich 2007-06-13 16:51:28 UTC
Can you try the newest kernel (2.6.22-rc4)? It has multiple fixes for USB, good chance that your problem has been addressed.
Comment 10 Natalie Protasevich 2008-03-29 22:21:18 UTC
Closing this bug for no recent activity.
please reopen if still exists in the latest kernel.

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