I am using my laptop PC (Panasonic CF-N9) with MATE desktop environment based on Debian Jessie, and the network connection is managed by Network Manager software. Recently, the Network Manager started to ignore the wireless LAN device and the wireless LAN connection became unavailable. Here is the snipped kernel log. I guess this is telling me what had happened behind the scene. Once this log was generated, the wireless LAN device seems to disappear during the PCI device detection process of the kernel. Has the wireless LAN device within this PC broken? May 14 22:05:35 gingitsune kernel: [10135.794350] ------------[ cut here ]------------ May 14 22:05:35 gingitsune kernel: [10135.794370] WARNING: CPU: 1 PID: 1833 at /build/linux-AY4Gs5/linux-3.16.43/drivers/net/wireless/iwlwifi/pcie/trans.c:1265 iwl_trans_pcie_grab_nic_access+0xe0/0xf0 [iwlwifi]() May 14 22:05:35 gingitsune kernel: [10135.794372] Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff) May 14 22:05:35 ging