From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040124 Galeon/1.3.14 Description of problem: When printing to a printer via a usb to parallel cord through a 7-port USB2 D-link hub, the syslog reports disconnected usb device, and all usb devices on the system, including those plugged directly into the motherboard stop functionioning and any usb device unplugged or plugged in is not noticed by th kernel at all. When this occurs khubd goes into uninterruptable sleep mode. This behavior is also manifest when accessing a usb flash reader plugged into the hub. This problems seems to be triggered by heavy traffic to the usb device. For example, printing normal word processing jobs and merely doing an ls on the flash card work fine. But a large print job (complicatd page with lots of data) and running a program like gqview on the flash card (generating thumbnails) causes the disconnect message and the whole usb subsystem to become unresponsive. This problem does not occur on kernel 2.6.5-1.315 from FC1, but does occur on kernel 2.6.5-1.358 from FC2. There is no output in the logs except something like this: Jul 11 16:09:53 enterprise kernel: usb 1-6: USB disconnect, address 2 Jul 11 16:09:53 enterprise kernel: usb 1-6.1: USB disconnect, address 3 Jul 11 16:09:53 enterprise kernel: usb 1-6.3: USB disconnect, address 4 followed by this error over and over (which is to be expected): Jul 11 16:09:57 enterprise kernel: drivers/usb/class/usblp.c: usblp0: error -19 reading printer status Version-Release number of selected component (if applicable): kernel-2.6.6-1.435.2.3 How reproducible: Always Steps to Reproduce: 1. Plug in 7-port usb2 d-link hub, attach usb storage or printer. 2. create heavy usb activity 3. watch usb mouse turn off Actual Results: the hub disconnected, all usb devices dead, khubd is in D state, no USB port on the system responds Expected Results: printing should work, accessing usb storage device should work just fine. Additional info:
Neglected to mention that plugging the storage device or printer directly into the usb ports on the machine seems to work fine on all the kernels I tested. This problem is only manifest when using the devices via the 7-port usb2 d-link hub.
If you try a test kernel from one of the following places, does the problem still occur? + rawhide (a.k.a. fc-devel) + FC3 test 1 + http://people.redhat.com/arjanv/2.6/
Thanks for the bug report. However, Red Hat no longer maintains this version of the product. Please upgrade to the latest version and open a new bug if the problem persists. The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/