The kernel panics after using the hotkey to disable then re-enable the wifi card on a Dell XPS 14z. A bug[0] was reported against Ubuntu that reports a kernel panic when using the hotkey to disable then re-enable wifi on a Dell XPS 14z. A kernel bisect was performed, which indicated the following commit as the source of the regression: commit dd551ab7b47ace14753b0d73f79437cc35adcf6b Author: Wey-Yi Guy <wey-yi.w.guy@intel.com> Date: Thu May 3 14:22:01 2012 -0700 iwlwifi: include rssi as part of decision making for reduce txpower In bt coex, consider the average rssi as part of decision making process Change-Id: I8d11d7f177a6875e2a9d08f7539d42253226fd7a Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Reviewed-on: http://git-mwg.jer.intel.com/gerrit/1945 Tested-by: Jenkins Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> A test kernel was created with this commit reverted, which stopped the kernel panic from occurring. [0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1029547
*** This bug has been marked as a duplicate of bug 45481 ***