The latest kernel 3.16 driver doesn't Panic but it still has driver failures that render the driver and device unable to scan and find networks. No need for a bisect since this driver is in staging, and is a work-in-progress. For Trusty 3.13 kernel it may be necessary to disable building the module since there is nothing we can do downstream to make it work. [ 13.738475] rtl8821ae: module is from the staging directory, the quality is unknown, you have been warned. -- v3.16 kernel -- [ 14.019892] WARNING: CPU: 0 PID: 321 at /home/apw/COD/linux/net/wireless/reg.c:1555 wiphy_apply_custom_regulatory+0xbc/0xe0 [cfg80211]() [ 14.019894] wiphy should have REGULATORY_CUSTOM_REG [ 14.019896] Modules linked in: asus_nb_wmi(+) intel_soc_dts_thermal(-) intel_powerclamp asus_wmi sparse_keymap coretemp rtl8821ae(C+) kvm mac80211 crct10dif_pclmul btusb crc32_pclmul ghash_clmulni_intel bluetooth uvcvideo cryptd cfg80211 videobuf2_vmalloc joydev videobuf2_memops videobuf2_core snd_soc_rt5640 v4l2_common snd_hda_intel(+) snd_soc_rl6231 serio_raw snd_hda_controller videodev snd_soc_core media snd_hda_codec snd_compress snd_pcm_dmaengine rtsx_pci_ms snd_seq_midi snd_seq_midi_event snd_rawmidi snd_hwdep 6lowpan_iphc lpc_ich(+) memstick snd_pcm snd_seq wmi i915(+) snd_seq_device snd_timer snd i2c_hid hid soundcore dw_dmac video dw_dmac_core drm_kms_helper drm i2c_designware_platform i2c_algo_bit i2c_designware_core parport_pc spi_pxa2xx_platform pwm_lpss ppdev mac_hid lp 8250_dw mei_txe parport mei snd_soc_sst_acpi iosf_mbi rtsx_pci_sdmmc psmouse r8169 mii ahci rtsx_pci libahci sdhci_acpi sdhci [ 14.019972] CPU: 0 PID: 321 Comm: systemd-udevd Tainted: G C 3.16.0-031600-generic #201408031935 [ 14.019975] Hardware name: ASUSTeK COMPUTER INC. X551MA/X551MA, BIOS X551MA.402 02/08/2014 [ 14.019978] 0000000000000613 ffff8800b1633a18 ffffffff82786525 0000000000003f8a [ 14.019984] ffff8800b1633a68 ffff8800b1633a58 ffffffff8207207c ffffffffc0a9bfb8 [ 14.019988] ffffffffc0a8d1e0 ffff8800aff00260 ffffffffc0a48ab0 ffff8800aff01840 [ 14.019993] Call Trace: [ 14.020003] [] dump_stack+0x46/0x58 [ 14.020010] [] warn_slowpath_common+0x8c/0xc0 [ 14.020031] [] ? rtl_regd_init+0x310/0x310 [rtl8821ae] [ 14.020036] [] warn_slowpath_fmt+0x46/0x50 [ 14.020053] [] wiphy_apply_custom_regulatory+0xbc/0xe0 [cfg80211] [ 14.020067] [] ? rtl_regd_init+0x310/0x310 [rtl8821ae] [ 14.020080] [] rtl_regd_init+0x152/0x310 [rtl8821ae] [ 14.020095] [] rtl_init_core+0x41/0x170 [rtl8821ae] [ 14.020110] [] rtl_pci_probe+0x289/0x910 [rtl8821ae] [ 14.020116] [] local_pci_probe+0x4e/0xa0 [ 14.020121] [] ? pci_match_device+0xe5/0x110 [ 14.020126] [] __pci_device_probe+0xb9/0xf0 [ 14.020131] [] pci_device_probe+0x3a/0x60 [ 14.020137] [] really_probe+0x91/0x380 [ 14.020141] [] driver_probe_device+0x47/0xa0 [ 14.020146] [] __driver_attach+0xab/0xb0 [ 14.020150] [] ? driver_probe_device+0xa0/0xa0 [ 14.020155] [] bus_for_each_dev+0x5e/0x90 [ 14.020159] [] driver_attach+0x1e/0x20 [ 14.020163] [] bus_add_driver+0x124/0x260 [ 14.020168] [] driver_register+0x64/0xf0 [ 14.020172] [] __pci_register_driver+0x4c/0x50 [ 14.020184] [] rtl8821ae_module_init+0x2b/0x1000 [rtl8821ae] [ 14.020192] [] ? 0xffffffffc0969fff [ 14.020198] [] do_one_initcall+0xd7/0x200 [ 14.020203] [] ? kfree+0x134/0x170 [ 14.020209] [] do_init_module+0x30/0x181 [ 14.020215] [] load_module+0x4b9/0x5f0 [ 14.020219] [] ? show_initstate+0x50/0x50 [ 14.020223] [] SyS_finit_module+0xae/0xd0 [ 14.020230] [] system_call_fastpath+0x1a/0x1f [ 14.020233] ---[ end trace c3657046d4a5b2fe ]---