搭载 Fedora 19/20 (3.13+) 的 Lenovo T440s 出现 WiFi 模块问题

Question

我已经在网上搜索过，但没有找到适合我的问题的解决方案。驱动程序是最新的（直接来自 intel-pages）。

我在最近购买的联想 Thinkpad T440s 上运行 Fedora 20，该设备配有英特尔 7260 WLAN 设备。自收到设备之日起，安装 Fedora 19 后不久，我就遇到了无线局域网连接问题（以太网连接完全没有问题）。升级到 Fedora 20 后，问题仍然存在。

我唯一的方法是摘录我的日志（错误几乎总是相同的），您可以在这里看到（它是最新的）

Mar 27 19:32:21 stealth dbus[956]: [system] Successfully activated service 'org.freedesktop.problems'
Mar 27 19:32:22 stealth abrt-server: Duplicate: core backtrace
Mar 27 19:32:22 stealth abrt-server: DUP_OF_DIR: /var/tmp/abrt/oops-2014-03-21-11:15:57-2106-0
Mar 27 19:32:22 stealth abrt-server: Deleting problem directory oops-2014-03-27-19:32:20-1827-1 (dup of oops-2014-03-21-11:15:57-2106-0)
Mar 27 19:32:23 stealth abrt-dump-oops: Reported 2 kernel oopses to Abrt
Mar 27 19:32:27 stealth kernel: [  334.542883] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: [  336.380011] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: [  338.254690] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: [  340.095838] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
Mar 27 19:32:27 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]
Mar 27 19:32:29 stealth kernel: [  341.900469] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Mar 27 19:32:29 stealth kernel: [  341.918142] [sched_delayed] sched: RT throttling activated
Mar 27 19:32:29 stealth kernel: iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Mar 27 19:32:29 stealth kernel: [sched_delayed] sched: RT throttling activated
Mar 27 19:32:29 stealth kernel: [  342.041989] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Mar 27 19:32:29 stealth kernel: iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Mar 27 19:32:42 stealth kernel: [  347.860153] iwlwifi 0000:03:00.0: Failed to load firmware chunk!
Mar 27 19:32:42 stealth kernel: [  347.860158] iwlwifi 0000:03:00.0: Could not load the [0] uCode section
Mar 27 19:32:42 stealth kernel: [  347.860163] iwlwifi 0000:03:00.0: Failed to start RT ucode: -110
Mar 27 19:32:42 stealth kernel: [  349.672452] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: [  351.511049] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: [  353.384834] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: [  355.223474] iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failed to load firmware chunk!
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Could not load the [0] uCode section
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failed to start RT ucode: -110
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
Mar 27 19:32:42 stealth kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]
Mar 27 19:33:02 stealth dbus-daemon: dbus[956]: [system] Activating via systemd: service name='org.freedesktop.ModemManager1' unit='dbus-org.freedesktop.ModemManager1.service'
Mar 27 19:33:02 stealth dbus[956]: [system] Activating via systemd: service name='org.freedesktop.ModemManager1' unit='dbus-org.freedesktop.ModemManager1.service'
Mar 27 19:33:02 stealth dbus[956]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.ModemManager1.service': Unit dbus-org.freedesktop.ModemManager1.service failed to load: No such file or directory.
Mar 27 19:33:02 stealth dbus-daemon: dbus[956]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.ModemManager1.service': Unit dbus-org.freedesktop.ModemManager1.service failed to load: No such file or directory.
Mar 27 19:34:17 stealth kernel: [  450.493045] iwlwifi 0000:03:00.0: iwl_trans_send_cmd bad state = 0
Mar 27 19:34:17 stealth kernel: [  450.493050] iwlwifi 0000:03:00.0: Scan failed! status 0x1 ret -5
Mar 27 19:34:17 stealth kernel: iwlwifi 0000:03:00.0: iwl_trans_send_cmd bad state = 0
Mar 27 19:34:17 stealth kernel: iwlwifi 0000:03:00.0: Scan failed! status 0x1 ret -5

有关更多信息，请参阅相关lspci输出

03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)

和我的rfkill清单

0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
16: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

有人知道是什么导致了这个问题以及如何解决它吗？