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Dell XPS 13 9370、Ubuntu 16.04 LTS 启动速度极慢。似乎与 Qualcomm Atheros (Killer Wifi) 驱动程序有关

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Dell XPS 13 9370、Ubuntu 16.04 LTS 启动速度极慢。似乎与 Qualcomm Atheros (Killer Wifi) 驱动程序有关

编辑 2：显然，在我使用官方 ISO 重新安装 Ubuntu 16.04 LTS 后，问题就消失了。内核版本现在是 4.13.0-32-generic。不确定是什么原因造成的。也许我不应该升级内核。也许这与戴尔的 Ubuntu 发行版有关。也许是我的 Windows 双启动安装。无论如何，现在似乎已经解决了。

我刚买了戴尔 XPS 13 9370 开发者版。运行 后dist-upgrade，启动过程变得异常缓慢，耗时长达 100 秒。检查 的输出dmesg，我怀疑 Killer Wifi 卡可能会导致问题。以下是相关输出：

[    3.448012] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/cal-pci-0000:02:00.0.bin failed with error -2
[    3.448177] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
[    3.448178] ath10k_pci 0000:02:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
[    3.569873] input: DELL07E6:00 06CB:76AF Touchpad as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DELL07E6:00/0018:06CB:76AF.0001/input/input19
[    3.570012] hid-multitouch 0018:06CB:76AF.0001: input,hidraw0: I2C HID v1.00 Mouse [DELL07E6:00 06CB:76AF] on i2c-DELL07E6:00
[    5.402962] pci_bus 0000:05: busn_res: [bus 05] is released
[    5.403000] pci_bus 0000:06: busn_res: [bus 06] is released
[    5.403022] pci_bus 0000:07: busn_res: [bus 07] is released
[    5.403044] pci_bus 0000:08: busn_res: [bus 08] is released
[    5.403064] pci_bus 0000:04: busn_res: [bus 04-08] is released
[    5.677930] ath10k_pci 0000:02:00.0: qca6174 hw3.2 (0x05030000, 0x00340aff sub 1a56:143a) fw WLAN.RM.2.0-00180-QCARMSWPZ-1 fwapi 4 bdapi 2 htt-ver 3.26 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1 features wowlan,ignore-otp,no-4addr-pad
[    5.677933] ath10k_pci 0000:02:00.0: debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[    5.747015] ath: EEPROM regdomain: 0x6c
[    5.747017] ath: EEPROM indicates we should expect a direct regpair map
[    5.747019] ath: Country alpha2 being used: 00
[    5.747019] ath: Regpair used: 0x6c
[    5.751128] ath10k_pci 0000:02:00.0 wlp2s0: renamed from wlan0
[   93.093951] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   93.093953] Bluetooth: BNEP filters: protocol multicast
[   93.093957] Bluetooth: BNEP socket layer initialized

具体来说，这条线ath10k_pci 0000:02:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2似乎有问题，但我不知道如何修复它。

我尝试了内核版本 94 和 112，但都没有成功。不幸的是，我已清除了原始内核，因此无法再次使用原始内核进行测试。

有没有办法解决此无线网卡的固件问题？或者我能否通过某种方式检索原始内核版本，安装它并尝试是否能解决问题？

编辑：输出systemd-analyze blame

      2.396s NetworkManager-wait-online.service
      2.140s [email protected]
      1.269s rtkit-daemon.service
       455ms dev-nvme0n1p3.device
       372ms docker.service
       324ms vboxdrv.service
       218ms gpu-manager.service
       129ms lightdm.service
       127ms accounts-daemon.service
       118ms ModemManager.service

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