[Bug 42149] Re: USB devices are not powered off at shutdown (Dapper, 2.6.15)

Pali pali.rohar at gmail.com
Wed Aug 11 14:25:24 UTC 2010


I have same problem for 3 years and still on Kununtu 9.10

But I have solution. On page https://bugzilla.kernel.org/show_bug.cgi?id=5410 is reason and simple patch.
I created new patch which add new param power_off_usb in ohci-hcd module.

With this patch my computer finally turn off all usb devices after halt.
Finally my USB mouse doesnt light when computer is turned off.

I have recompiled kernel (package linux-image-2.6.35-7-generic) with
this usb patch in my PPA https://launchpad.net/~pali/+archive/pali

Because module ohci-hcd is static linked to kernel, param power_off_usb is needed to add in grub.
Add this line in /boot/grub/grub.cfg and then run: sudo update-grub
GRUB_CMDLINE_LINUX="ohci_hcd.power_off_usb=1"


** Bug watch added: Linux Kernel Bug Tracker #5410
   http://bugzilla.kernel.org/show_bug.cgi?id=5410

-- 
USB devices are not powered off at shutdown
https://bugs.launchpad.net/bugs/42149
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