$ dmesg | grep iwl
[   15.976027] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[   15.976211] iwlwifi 0000:03:00.0: irq 45 for MSI/MSI-X
[   15.984851] iwlwifi 0000:03:00.0: Direct firmware load failed with error -2
[   15.984856] iwlwifi 0000:03:00.0: Falling back to user helper
[   76.179983] iwlwifi 0000:03:00.0: Direct firmware load failed with error -2
[   76.179990] iwlwifi 0000:03:00.0: Falling back to user helper
[  136.404742] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532 op_mode iwldvm
[  136.427035] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[  136.427039] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[  136.427041] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[  136.427043] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6200 AGN, REV=0x74
[  136.427162] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  136.447913] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[  136.504095] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  136.510640] iwlwifi 0000:03:00.0: Radio type=0x1-0x3-0x1
[  136.729582] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[  136.736093] iwlwifi 0000:03:00.0: Radio type=0x1-0x3-0x1