我正在使用全新的 Dell XPS 13 9370(带有 Ubuntu 18.04 的开发者版本)和 Dell dock WD15(带有 RealTek 千兆以太网适配器)。设置后的第一天或第二天有线连接可以正常工作,但现在找不到设备,只有 WiFi 可以正常工作:
bart@bart:~$ ifconfig -a
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2796 bytes 263389 (263.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2796 bytes 263389 (263.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.16.60.2 netmask 255.255.192.0 broadcast 10.16.63.255
inet6 fe80::66a1:cfc:5a38:e81c prefixlen 64 scopeid 0x20<link>
ether 9c:b6:d0:92:e2:47 txqueuelen 1000 (Ethernet)
RX packets 14541 bytes 9101768 (9.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10748 bytes 1753428 (1.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Ubuntu GUI 中也没有可用的有线互联网设置,只有无线设置......
bart@bart:~$ sudo 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: 9c:b6:d0:92:e2:47
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-1028-oem firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 ip=10.16.60.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:134 memory:dc000000-dc1fffff
任何帮助将不胜感激!
答案1
解决方案是通过创建以下文件来禁用 ehci_hcd 内核模块加载:
bart@bart:/etc/modprobe.d$ cat blacklist-test.conf
blacklist ehci_hcd
我不确定这为什么有效,但它解决了我的问题。
如果有人能对该解决方案的副作用提供解释或评论,我将不胜感激!