If you are still having issues it must be another similar issue and
needs a new bug
** Changed in: linux (Ubuntu)
Status: Incomplete = Fix Released
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification
I was working with the workaround don't update the kernel with any
version 2.6.24-19 for a while.
I just retested with 2.6.24-24 and 2.6.24-25, and this issue seems to be fixed.
With the 2.6.31 from 9.10 it also works fine.
I checked the linux_2.6.24-25.63.diff.gz (got with apt-get source
Can you confirm this issue exists with the Karmic Alpha 9.10 release.
Images for testing are available at http://cdimage.ubuntu.com/daily-
live/current/ . Please let us know your results.
If the issue remains while still running Karmic, please run the
following command which will automatically
Same problem with kubuntu 8.04.2 (linux 2.6.24-24)
when I plug the external usb hub:
[ 182.788947] usb 5-4: new high speed USB device using ehci_hcd and address 6
[ 182.921415] usb 5-4: configuration #1 chosen from 1 choice
[ 182.922560] hub 5-4:1.0: USB hub found
[ 182.929209] hub 5-4:1.0: 4
Does this still happen on the released version of Jaunty ?
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Manoj Iyer (manjo)
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a
Still exists in 2.6.24-23.
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
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Bugs, which is subscribed to Ubuntu.
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ubuntu-bugs mailing list
Just to say that it still exists in -22 (but it's quite normal because
it was just a security update).
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a member of Ubuntu
Bugs, which is
I just tried to backport the hub_reset() and persistent_device()
functions from hub.c in 2.6.26, but it didn't help. (So the patch I
attach to this comment DOESN'T WORK).
I guess there are also modifications in the ehci driver but I'm not fit
enought to look in it.
I searched throught the diff
** Attachment added: dmesg output. No message while plugging in usbdevice in a
hub.
http://launchpadlibrarian.net/18797906/dmesg.log
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a
** Attachment added: output of uname -a
http://launchpadlibrarian.net/18797961/uname-a.log
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed
** Attachment added: output of lspci -vvnn
http://launchpadlibrarian.net/18798379/lspci-vvnn.log
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a member of Ubuntu
Bugs, which is
** Attachment added: /proc/version_signature
http://launchpadlibrarian.net/18798371/version.log
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a member of Ubuntu
Bugs, which is
** Attachment added: output of lsusb -v
http://launchpadlibrarian.net/18798402/lsusb-v.log
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed
I tried to recompile the kernel and remove the ubuntu modification from
drivers/usb/core/hub.c (see attached patch), and the usb hubs are
working back. I guess the bug is somewhere in this modification.
How I did :
apt-get source linux-image-2.6.24-21-generic
patch -p1 -R hub.patch
cd
I had a look in hub.c and I propose this patch which works for me. I'm
not quite sure if it has side effects since it's the first time I'm
looking in the usbcore code.
I noticed that when I'm plugging a memory stick in my hub, the hub makes
a soft reset first. I guess it can be one of this side
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
Assignee: (unassigned) = Ubuntu Kernel Team (ubuntu-kernel-team)
Status: New = Triaged
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usb devices not recognized automatically when plugged in a hub
https://bugs.launchpad.net/bugs/287576
You received this bug
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