RJ45接线非T568A/B标准及改线后以太网频繁断连故障求助

我本来以为墙里的网线应该遵循T568A或者T568B标准，但实际测出来的线序完全不是这两种，想问问这是什么情况？测出来的线序是：

• 1. 棕色
• 2. 绿白
• 3. 橙白
• 4. 蓝色
• 5. 蓝白
• 6. 橙色
• 7. 绿色
• 8. 棕白

我一开始把墙对面出来的线按T568B接了，但测线仪显示的就是上面这个奇怪的顺序。

更新1：
看了大家的评论，我觉得这根线原本可能是用来接电话线的。于是我把墙上端口改成了T568A的线序，墙对面的那头也改成了一样的T568A，但现在还是没法正常使用以太网——不管是Windows还是Linux电脑，都一直出现“正在连接/断开连接”的错误。

更新2：
贴一下相关的系统日志和工具输出：

ifconfig 输出：

enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

inet6 fe80::ceeb:e1d3:c921:a67  prefixlen 64  scopeid 0x20<link>

ether d8:5e:d3:d5:c5:d6  txqueuelen 1000  (Ethernet)

RX packets 115  bytes 11018 (11.0 KB)

RX errors 317  dropped 2  overruns 0  frame 317

TX packets 519  bytes 77177 (77.1 KB)

TX errors 0  dropped 0 overruns 0  carrier 0  collisions 327

device memory 0x53200000-532fffff

journalctl -u NetworkManager 输出：

May 29 02:28:29 mint-pc NetworkManager[842]: <info>  [1685341709.2321] device (enp3s0): state change: ip-config -> unavailable (reason 'carrier-changed', sys-iface-state: '>
May 29 02:28:29 mint-pc NetworkManager[842]: <info>  [1685341709.2584] dhcp4 (enp3s0): canceled DHCP transaction
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.1757] device (enp3s0): carrier: link connected
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.1761] device (enp3s0): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state>
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.1773] policy: auto-activating connection 'Wired connection 1' (e66e6c53-8fde-3a56-b3bb-57ee5f0f0c8c)
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.1782] device (enp3s0): Activation: starting connection 'Wired connection 1' (e66e6c53-8fde-3a56-b3bb-57ee5f>
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.1785] device (enp3s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.2622] device (enp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.2627] device (enp3s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
May 29 02:28:56 mint-pc NetworkManager[842]: <info>  [1685341736.2630] dhcp4 (enp3s0): activation: beginning transaction (timeout in 45 seconds)
May 29 02:28:58 mint-pc NetworkManager[842]: <info>  [1685341738.8633] device (enp3s0): carrier: link connected
May 29 02:29:08 mint-pc NetworkManager[842]: <info>  [1685341748.4998] device (enp3s0): state change: ip-config -> unavailable (reason 'carrier-changed', sys-iface-state: '>
May 29 02:29:08 mint-pc NetworkManager[842]: <info>  [1685341748.5265] dhcp4 (enp3s0): canceled DHCP transaction

ethtool enp3s0 输出：

Settings for enp3s0:
Supported ports: [  ]
Supported link modes:   10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes:  10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: Unknown!
Duplex: Unknown! (255)
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
MDI-X: off (auto)
netlink error: Operation not permitted
Current message level: 0x00000007 (7)
drv probe link
Link detected: no

最后补充一下，墙上插的是Leviton 41108-RW8型号的插座。

备注：内容来源于stack exchange，提问作者Robby