我刚刚在一台全新的笔记本电脑上安装了 Ubuntu 15.04。WiFi 工作正常，直到我合上盖子。当我重新打开它时，我再也无法连接，而且无论怎么摆弄网络管理器小程序都无法让我的连接恢复。
我的系统是法语的，但这里显示 Wi-Fi 目前已被硬件开关禁用。这台电脑上没有硬件开关。我有一个Fn+F11可以切换飞行模式的键绑定，但它什么也没做。
我在关闭盖子之前和之后运行了一些诊断工具，以下是输出：
ifconfig wlan0
前
wlan0 Link encap:Ethernet HWaddr 48:51:b7:bb:67:00
inet adr:192.168.1.14 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::4a51:b7ff:febb:6700/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:149 erreurs:0 :0 overruns:0 frame:0
TX packets:177 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:62235 (62.2 KB) Octets transmis:32517 (32.5 KB)
后
wlan0 Link encap:Ethernet HWaddr 48:51:b7:bb:67:00
BROADCAST MULTICAST MTU:1500 Metric:1
Packets reçus:258 erreurs:0 :0 overruns:0 frame:0
TX packets:288 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:81657 (81.6 KB) Octets transmis:88674 (88.6 KB)
我试过了sudo ifconfig wlan0 up，但收到SIOCSIFFLAGS超时错误消息。
iwconfig wlan0
前
wlan0 IEEE 802.11bgn ESSID:"Livebox-F1EF"
Mode:Managed Frequency:2.412 GHz Access Point: 9C:D2:4B:57:F1:EF
Bit Rate=1 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=68/70 Signal level=-42 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:54 Missed beacon:0
后
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
我试过了sudo iwconfig wlan0 power on，但它似乎只是在前一个输出中切换到Power Management，on但并没有解决问题。
rfkill-list
前
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
后
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
在我看来，这实际上是最奇怪的部分。整个蓝牙部分都消失了（我根本不使用蓝牙，所以我并不关心）。但它明确表示 wifi 未被硬阻止。那么
network-manager它从哪里得到这些信息呢？
sudo lshw -C network
前
*-network
description: Interface réseau sans fil
produit: Wireless 7260
fabriquant: Intel Corporation
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlan0
version: c3
numéro de série: 48:51:b7:bb:67:00
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.19.0-15-generic firmware=25.17.12.0 ip=192.168.1.14 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
ressources: irq:53 mémoire:f7100000-f7101fff
后
*-network DÉSACTIVÉ
description: Interface réseau sans fil
produit: Wireless 7260
fabriquant: Intel Corporation
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlan0
version: c3
numéro de série: 48:51:b7:bb:67:00
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.19.0-15-generic firmware=25.17.12.0 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
ressources: irq:53 mémoire:f7100000-f7101fff
在这里我可以清楚地看到我的 wifi 卡被禁用了（大已停止活动在顶部的link=no配置中）。但我不知道如何再次启用它。
我甚至尝试过sudo service network-manager stop && sudo service network-manager start。这替换了来自通过硬件开关禁用到设备尚未准备好。
当我合上盖子时会发生什么？当我打开盖子时如何重新启用 Wi-Fi？
dmesg
[ 6423.908306] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 6423.938932] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
[ 6424.556489] iwlwifi 0000:02:00.0: Hardware error detected. Restarting.
[ 6424.556496] iwlwifi 0000:02:00.0: CSR values:
[ 6424.556498] iwlwifi 0000:02:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
[ 6424.556503] iwlwifi 0000:02:00.0: CSR_HW_IF_CONFIG_REG: 0X40c89204
[ 6424.556508] iwlwifi 0000:02:00.0: CSR_INT_COALESCING: 0X80000040
[ 6424.556514] iwlwifi 0000:02:00.0: CSR_INT: 0X20000000
[ 6424.556519] iwlwifi 0000:02:00.0: CSR_INT_MASK: 0X00000000
[ 6424.556523] iwlwifi 0000:02:00.0: CSR_FH_INT_STATUS: 0X00000000
[ 6424.556528] iwlwifi 0000:02:00.0: CSR_GPIO_IN: 0X00000000
[ 6424.556533] iwlwifi 0000:02:00.0: CSR_RESET: 0X00000003
[ 6424.556537] iwlwifi 0000:02:00.0: CSR_GP_CNTRL: 0X080003dc
[ 6424.556542] iwlwifi 0000:02:00.0: CSR_HW_REV: 0X00000144
[ 6424.556547] iwlwifi 0000:02:00.0: CSR_EEPROM_REG: 0X00000000
[ 6424.556551] iwlwifi 0000:02:00.0: CSR_EEPROM_GP: 0X80000000
[ 6424.556556] iwlwifi 0000:02:00.0: CSR_OTP_GP_REG: 0X803a0000
[ 6424.556561] iwlwifi 0000:02:00.0: CSR_GIO_REG: 0X00080044
[ 6424.556565] iwlwifi 0000:02:00.0: CSR_GP_UCODE_REG: 0X00000000
[ 6424.556570] iwlwifi 0000:02:00.0: CSR_GP_DRIVER_REG: 0X00000000
[ 6424.556575] iwlwifi 0000:02:00.0: CSR_UCODE_DRV_GP1: 0X00000000
[ 6424.556579] iwlwifi 0000:02:00.0: CSR_UCODE_DRV_GP2: 0X00000000
[ 6424.556584] iwlwifi 0000:02:00.0: CSR_LED_REG: 0X00000018
[ 6424.556589] iwlwifi 0000:02:00.0: CSR_DRAM_INT_TBL_REG: 0X00000000
[ 6424.556593] iwlwifi 0000:02:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
[ 6424.556598] iwlwifi 0000:02:00.0: CSR_ANA_PLL_CFG: 0Xd55555d5
[ 6424.556603] iwlwifi 0000:02:00.0: CSR_MONITOR_STATUS_REG: 0X1c01019c
[ 6424.556607] iwlwifi 0000:02:00.0: CSR_HW_REV_WA_REG: 0X0001001a
[ 6424.556612] iwlwifi 0000:02:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0510
[ 6424.556615] iwlwifi 0000:02:00.0: FH register values:
[ 6424.593272] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X5a5a5a5a
[ 6424.630285] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X5a5a5a5a
[ 6424.666984] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_WPTR: 0X5a5a5a5a
[ 6424.703700] iwlwifi 0000:02:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X5a5a5a5a
[ 6424.740442] iwlwifi 0000:02:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X5a5a5a5a
[ 6424.777109] iwlwifi 0000:02:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X5a5a5a5a
[ 6424.795448] iwlwifi 0000:02:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X5a5a5a5a
[ 6424.813787] iwlwifi 0000:02:00.0: FH_TSSR_TX_STATUS_REG: 0X5a5a5a5a
[ 6424.832126] iwlwifi 0000:02:00.0: FH_TSSR_TX_ERROR_REG: 0X5a5a5a5a
[ 6424.850466] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[ 6424.850469] iwlwifi 0000:02:00.0: Status: 0x00000000, count: -1
[ 6424.850472] iwlwifi 0000:02:00.0: Loaded firmware version: 25.17.12.0
[ 6424.850475] iwlwifi 0000:02:00.0: 0xC062D497 | ADVANCED_SYSASSERT
[ 6424.850477] iwlwifi 0000:02:00.0: 0xFFFFFFFF | uPc
[ 6424.850478] iwlwifi 0000:02:00.0: 0x5A5A5A5A | branchlink1
[ 6424.850480] iwlwifi 0000:02:00.0: 0x00000000 | branchlink2
[ 6424.850481] iwlwifi 0000:02:00.0: 0x197B7CC8 | interruptlink1
[ 6424.850485] iwlwifi 0000:02:00.0: 0xFFFF8801 | interruptlink2
[ 6424.850490] iwlwifi 0000:02:00.0: 0xC0611789 | data1
[ 6424.850494] iwlwifi 0000:02:00.0: 0xFFFFFFFF | data2
[ 6424.850496] iwlwifi 0000:02:00.0: 0x18C18000 | data3
[ 6424.850497] iwlwifi 0000:02:00.0: 0xFFFF8801 | beacon time
[ 6424.850498] iwlwifi 0000:02:00.0: 0xC062D4C9 | tsf low
[ 6424.850500] iwlwifi 0000:02:00.0: 0xFFFFFFFF | tsf hi
[ 6424.850501] iwlwifi 0000:02:00.0: 0x197B7C70 | time gp1
[ 6424.850503] iwlwifi 0000:02:00.0: 0xFFFF8801 | time gp2
[ 6424.850504] iwlwifi 0000:02:00.0: 0x00000020 | time gp3
[ 6424.850505] iwlwifi 0000:02:00.0: 0xFFFF8801 | uCode version
[ 6424.850507] iwlwifi 0000:02:00.0: 0x197B7CD8 | hw version
[ 6424.850508] iwlwifi 0000:02:00.0: 0xFFFF8801 | board version
[ 6424.850510] iwlwifi 0000:02:00.0: 0xFFFF8800 | hcmd
[ 6424.850511] iwlwifi 0000:02:00.0: 0x00000296 | isr0
[ 6424.850512] iwlwifi 0000:02:00.0: 0x00000000 | isr1
[ 6424.850514] iwlwifi 0000:02:00.0: 0x197B7CD0 | isr2
[ 6424.850516] iwlwifi 0000:02:00.0: 0xFFFF8801 | isr3
[ 6424.850523] iwlwifi 0000:02:00.0: 0xC0626424 | isr4
[ 6424.850530] iwlwifi 0000:02:00.0: 0xFFFFFFFF | isr_pref
[ 6424.850537] iwlwifi 0000:02:00.0: 0xC062D497 | wait_event
[ 6424.850543] iwlwifi 0000:02:00.0: 0xFFFFFFFF | l2p_control
[ 6424.850544] iwlwifi 0000:02:00.0: 0x5A5A5A5A | l2p_duration
[ 6424.850546] iwlwifi 0000:02:00.0: 0x00000000 | l2p_mhvalid
[ 6424.850547] iwlwifi 0000:02:00.0: 0xC0626424 | l2p_addr_match
[ 6424.850548] iwlwifi 0000:02:00.0: 0xFFFFFFFF | lmpm_pmg_sel
[ 6424.850550] iwlwifi 0000:02:00.0: 0x18C18000 | timestamp
[ 6424.850551] iwlwifi 0000:02:00.0: 0xFFFF8801 | flow_handler
[ 6424.850554] ieee80211 phy0: Hardware restart was requested
[ 6429.847292] iwlwifi 0000:02:00.0: Failed to load firmware chunk!
[ 6429.847296] iwlwifi 0000:02:00.0: Could not load the [0] uCode section
[ 6429.847302] iwlwifi 0000:02:00.0: Failed to start RT ucode: -110
[ 6429.877948] ------------[ cut here ]------------
[ 6429.877964] WARNING: CPU: 3 PID: 831 at /build/buildd/linux-3.19.0/drivers/net/wireless/iwlwifi/pcie/trans.c:355 iwl_pcie_apm_stop+0x6b9/0x790 [iwlwifi]()
[ 6429.877966] Modules linked in: ctr ccm binfmt_misc rfcomm bnep arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp iwlmvm kvm_intel mac80211 uvcvideo kvm videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common hid_logitech_hidpp videodev joydev rtsx_pci_ms serio_raw media snd_hda_codec_hdmi iwlwifi snd_hda_codec_realtek lpc_ich memstick snd_hda_codec_generic cfg80211 btusb bluetooth snd_soc_rt5640 mei_me snd_hda_intel snd_soc_rl6231 snd_hda_controller shpchp snd_hda_codec mei snd_soc_core snd_hwdep snd_compress snd_pcm_dmaengine snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd dw_dmac i2c_hid dw_dmac_core snd_soc_sst_acpi soundcore i2c_designware_platform 8250_dw i2c_designware_core spi_pxa2xx_platform acpi_pad mac_hid parport_pc ppdev
[ 6429.878000] lp parport autofs4 dm_crypt hid_logitech_dj usbhid hid rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i915 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i2c_algo_bit r8169 drm_kms_helper psmouse mii rtsx_pci drm ahci libahci wmi sdhci_acpi sdhci video
[ 6429.878018] CPU: 3 PID: 831 Comm: NetworkManager Tainted: G W 3.19.0-15-generic #15-Ubuntu
[ 6429.878019] Hardware name: Notebook W54_55_94_95_97AU,AUQ/W54_55_94_95_97AU,AUQ, BIOS 5.6.5 02/10/2015
[ 6429.878021] ffffffffc062fea8 ffff8800d3577438 ffffffff817c2205 0000000000000007
[ 6429.878023] 0000000000000000 ffff8800d3577478 ffffffff8107595a 00000001000061a8
[ 6429.878025] ffff880118c18000 ffff880118c18000 ffff880119243098 00000000080007d4
[ 6429.878028] Call Trace:
[ 6429.878034] [<ffffffff817c2205>] dump_stack+0x45/0x57
[ 6429.878037] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
[ 6429.878039] [<ffffffff81075a4a>] warn_slowpath_null+0x1a/0x20
[ 6429.878046] [<ffffffffc061ef49>] iwl_pcie_apm_stop+0x6b9/0x790 [iwlwifi]
[ 6429.878051] [<ffffffffc061f459>] iwl_trans_pcie_stop_device+0x109/0x570 [iwlwifi]
[ 6429.878057] [<ffffffffc0aa4c50>] iwl_mvm_up+0x340/0x440 [iwlmvm]
[ 6429.878060] [<ffffffff81738798>] ? ip_mc_inc_group+0x68/0x2b0
[ 6429.878064] [<ffffffff817b03f3>] ? rfkill_blocked+0x23/0x30
[ 6429.878069] [<ffffffffc0aa94dc>] __iwl_mvm_mac_start+0x2c/0x370 [iwlmvm]
[ 6429.878074] [<ffffffffc0aa9848>] iwl_mvm_mac_start+0x28/0x40 [iwlmvm]
[ 6429.878086] [<ffffffffc07e3c84>] ieee80211_do_open+0x324/0xde0 [mac80211]
[ 6429.878096] [<ffffffffc07e47b1>] ieee80211_open+0x71/0x80 [mac80211]
[ 6429.878099] [<ffffffff816c12d6>] __dev_open+0xb6/0x130
[ 6429.878102] [<ffffffff816c1601>] __dev_change_flags+0xa1/0x170
[ 6429.878104] [<ffffffff816c16f9>] dev_change_flags+0x29/0x70
[ 6429.878107] [<ffffffff816d0e67>] do_setlink+0x3a7/0xb80
[ 6429.878111] [<ffffffff81198bf0>] ? zone_statistics+0x80/0xa0
[ 6429.878113] [<ffffffff81198bf0>] ? zone_statistics+0x80/0xa0
[ 6429.878117] [<ffffffff813df622>] ? nla_parse+0x32/0x120
[ 6429.878119] [<ffffffff816d1d7d>] rtnl_newlink+0x5fd/0x7a0
[ 6429.878123] [<ffffffff81312aa8>] ? security_capable+0x18/0x20
[ 6429.878126] [<ffffffff8107e64d>] ? ns_capable+0x2d/0x60
[ 6429.878128] [<ffffffff816cdee2>] rtnetlink_rcv_msg+0x92/0x260
[ 6429.878131] [<ffffffff817c4f19>] ? schedule_preempt_disabled+0x29/0x70
[ 6429.878134] [<ffffffff817c6e1d>] ? __mutex_lock_slowpath+0xdd/0x100
[ 6429.878136] [<ffffffff816cde50>] ? rtnetlink_rcv+0x40/0x40
[ 6429.878139] [<ffffffff816ef389>] netlink_rcv_skb+0xb9/0xe0
[ 6429.878142] [<ffffffff816cde3c>] rtnetlink_rcv+0x2c/0x40
[ 6429.878144] [<ffffffff816eeac1>] netlink_unicast+0x111/0x1b0
[ 6429.878147] [<ffffffff816eee67>] netlink_sendmsg+0x307/0x650
[ 6429.878149] [<ffffffff8135eb30>] ? aa_sk_perm.isra.4+0x70/0x170
[ 6429.878153] [<ffffffff816a33dc>] do_sock_sendmsg+0x8c/0x100
[ 6429.878155] [<ffffffff816a2d7c>] ? copy_msghdr_from_user+0x15c/0x210
[ 6429.878158] [<ffffffff816a3a38>] ___sys_sendmsg+0x348/0x360
[ 6429.878161] [<ffffffff811a5cd0>] ? tlb_flush_mmu_free+0x40/0x60
[ 6429.878163] [<ffffffff811a68fc>] ? tlb_finish_mmu+0x1c/0x50
[ 6429.878165] [<ffffffff81211d55>] ? __fget_light+0x25/0x70
[ 6429.878167] [<ffffffff81211db3>] ? __fdget+0x13/0x20
[ 6429.878170] [<ffffffff816a36a0>] ? SYSC_sendto+0x1c0/0x210
[ 6429.878173] [<ffffffff816a4152>] __sys_sendmsg+0x42/0x80
[ 6429.878175] [<ffffffff816a41a2>] SyS_sendmsg+0x12/0x20
[ 6429.878179] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b
[ 6429.878180] ---[ end trace 9ee1cb823174d4be ]---
[ 6429.878184] iwlwifi 0000:02:00.0: Access time out - failed to enable LP XTAL