From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8) Gecko/20060126 Fedora/1.5-5 Firefox/1.5 Description of problem: My USB serial port didn't work , upon closer inspection I noticed pl2303 4-3.2:1.0: pl2303 converter detected usb 4-3.2: pl2303 converter now attached to ttyUSB0 usbcore: registered new driver pl2303 drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver then some lines later pl2303 ttyUSB0: pl2303_open - failed submitting interrupt urb, error -28 So I tried a rmmod pl2303 which resulted in a crah Version-Release number of selected component (if applicable): kernel-2.6.15-1.1881_FC5 How reproducible: Didn't try Steps to Reproduce: 1. rmmod pl2303 2. 3. Actual Results: Kernel bug .. oops is attached Expected Results: the module to be removed , or a working pl2303 driver :) Additional info:
Created attachment 124364 [details] The actual oops this is the actual oops I got. My machine started a (2 minute ?) countdown, then contuinued working .. (except for the serial adapter ..)
Are you plugging the pl2303 device into a USB 2.0 hub, or into the main port on the motherboard? And did you have a program that was accessing the pl2303 device when you unloaded it? Can you attach the /proc/bus/usb/devices file with the pl2303 device plugged in?
Plugged in to a hub actually. No program was accessing it.. I tried starting minicom but that failed. I`ll provide you with the devices file on monday .
If you plug it into a usb 1.1 hub, or into the main usb port on the machine, odds are it will work just fine.
It used to be working trough the hub till I upgraded to FC5 Testing. I`ll test on monday :)
It indeed works when plugging it in the machine directly. However as mentionned before, this used to work before.
You got lucky before. This is one area of the USB stack, where Linux is not fully operational (usb 1.1 devices plugged into 2.0 hubs.) People are still working on this, and it looks like the 2.6.16 kernel will be a lot better (I can't duplicate this anymore on my boxes), but it is still not fully working.
Kris, how is 2.6.16-1.2111_FC5?
Linux mine2.x-tend.be 2.6.16-1.2088_FC6 Tried and crashed again .. will try with the version you suggested.. also got to upgrade fist :)
See also: http://bugzilla.kernel.org/show_bug.cgi?id=6596
Created attachment 129839 [details] Test fix #1 - wait until scheduled work completes in disconnect
A new kernel update has been released (Version: 2.6.18-1.2200.fc5) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. In the last few updates, some users upgrading from FC4->FC5 have reported that installing a kernel update has left their systems unbootable. If you have been affected by this problem please check you only have one version of device-mapper & lvm2 installed. See bug 207474 for further details. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. If this bug has been fixed, but you are now experiencing a different problem, please file a separate bug for the new problem. Thank you.
Seems to be solved in 2.6.18-1.2849.fc6