Re: Mouse and keyboard freeze on Ivy Bridge platform

[Jonathan Nieder <jrnieder@gmail.com>]

Alan Stern wrote:
> On Wed, 3 Oct 2012 sebastien.dinot@free.fr wrote:

>> I am encountering random keyboard and mouse freezes which can only be
>> resolved by a hard reset (by pushing the power switch of the computer
>> case).
[...]
> Please build a kernel with CONFIG_USB_DEBUG enabled.  When a hang
> occurs, get a list of hang tasks (Alt-SysRq-w probably won't work, but
> "echo w >/proc/sysrq-trigger" from a network login should).  Then send
> the dmesg output

Sebastien: for reference, here's a way to build a kernel with
CONFIG_USB_DEBUG enabled.

	# prerequisites
	apt-get install git build-essential

	# get the kernel history, if you don't already ahve it
	git clone \
	  git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

	# configure
	cd linux
	cp /boot/config-$(uname -r) .config; # current configuration
	scripts/config --disable DEBUG_INFO
	make localmodconfig; # optional: minimize configuration
	scripts/config --enable USB_DEBUG

	# build, test
	make deb-pkg; # can use -j<num> for parallel build
	dpkg -i ../<name of package>; # as root
	reboot

Thanks,
Jonathan