Ubuntu 16.04 无法建立有线或无线连接

2024-6-10 • tag-icon

这是联想 Legion Y520 双启动系统，带有 Ubuntu 16.04 和 Windows 10。今天早上无线连接工作正常，两个连接在 Windows 中仍然有效。有时不得不切换操作系统，我知道我apt update && apt upgrade今天早上就切换了。我也尝试过在 Ubuntu 中连接蓝牙设备，但失败了（它配对了但没有显示为音频设备），但这是我现在遇到的最不重要的问题。

所有无线连接都可见，但就是无法连接，有线连接只是无限期地显示“正在连接”。今天剩下的时间我什么开发都没做，所以请求帮助。救命啊 :)

以下是一些分析。连接可见，但我无法 ping 任何内容。此外，面板中没有连接图标。

输出ifconfig：

enp3s0    Link encap:Ethernet  HWaddr 54:e1:ad:d2:04:e3  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2790 errors:0 dropped:4 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:198797 (198.7 KB)  TX bytes:108 (108.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:10168 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10168 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:548164 (548.1 KB)  TX bytes:548164 (548.1 KB)

wlp2s0    Link encap:Ethernet  HWaddr e8:2a:44:fe:93:35  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

输出lshw -C network：

  *-network               
       description: Wireless interface
       product: QCA6174 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 32
       serial: e8:2a:44:fe:93:35
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-48-generic firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:139 memory:a4200000-a43fffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 10
       serial: 54:e1:ad:d2:04:e3
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:19 ioport:3000(size=256) memory:a4504000-a4504fff memory:a4500000-a4503fff

一些lspci东西：

00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)

我的/etc/network/interfaces样子是这样的：

auto lo
iface lo inet loopback

我尝试过多次重置并重新安装network-manager驱动r8168程序（r8168-dkms_8.045.08-2_all.deb）。还尝试过从旧内核启动，但我不确定我期望的是什么。

欢迎提出任何建议，谢谢。

编辑：有两件事很突出dmesg less：

[    1.594537] PKCS#7 signature not signed with a trusted key
[    1.594545] r8168: loading out-of-tree module taints kernel.
[    1.594632] r8168: module verification failed: signature and/or required key missing - tainting kernel
[    1.595852] r8168 Gigabit Ethernet driver 8.045.08-NAPI loaded

还有更多r8168东西，

和

[    9.946492] audit: type=1400 audit(1557504826.227:38): apparmor="DENIED" operation="open" profile="/usr/lib/NetworkManager/nm-dhcp-helper" name="/usr/local/lib/libz.so.1.2.9" pid=1717 comm="nm-dhcp-helper" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

因为我早上遇到了一个 opencv 问题，通过安装解决了libz.so.1.2.9：https://stackoverflow.com/a/48579743