我剛剛購買了一台新的東芝Satellite C650，並將其設定為雙啟動Ubuntu 10.10 和Windows 7。當我的家庭LAN 時，乙太網路工作正常啟動時，但最終失敗。當它失敗時，我無法重新啟動它 - 不能透過斷開/重新連接電纜、使用網路管理員中的選項或運行 /etc/init.d/networking restart 來重新啟動。
其他一些症狀：
- 在 Windows 7 中完全沒有問題。
- 當其他設備（例如我的另一台筆記型電腦）也使用數據機時，該問題似乎更頻繁地發生。但其他設備都沒有這個問題。
附註：目前，無線網路根本無法運作，但我打算稍後再跨過那座橋——除非事實證明這是一個相關的問題。
lspci 給了我這個：
...
01:00.0 Ethernet controller: Atheros Communications AR8152 v2.0 Fast Ethernet (rev c1)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8176 (rev 01)
在Windows中尋找規格，我發現Realtek控制器是RTL8188CE。
乙太網路故障後，/var/log/syslog 的最後一行將類似於：
Dec 27 20:29:05 abe-Laptop kernel: [ 1661.352824] eth0: no IPv6 routers present.
最後但並非最不重要的一點是，這是我嘗試重新連接後 /var/log/syslog 的尾部：
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) starting connection 'Auto eth0'
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> (eth0): device state change: 3 -> 4 (reason 0)
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) started...
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) starting...
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> (eth0): device state change: 4 -> 5 (reason 0)
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) successful.
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) complete.
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> (eth0): device state change: 5 -> 7 (reason 0)
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> dhclient started with pid 2177
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
Dec 27 20:46:34 abe-Laptop dhclient: Internet Systems Consortium DHCP Client V3.1.3
Dec 27 20:46:34 abe-Laptop dhclient: Copyright 2004-2009 Internet Systems Consortium.
Dec 27 20:46:34 abe-Laptop dhclient: All rights reserved.
Dec 27 20:46:34 abe-Laptop dhclient: For info, please visit https://www.isc.org/software/dhcp/
Dec 27 20:46:34 abe-Laptop dhclient:
Dec 27 20:46:34 abe-Laptop NetworkManager[997]: <info> (eth0): DHCPv4 state changed nbi -> preinit
Dec 27 20:46:34 abe-Laptop dhclient: Listening on LPF/eth0/00:26:6c:df:1c:f8
Dec 27 20:46:34 abe-Laptop dhclient: Sending on LPF/eth0/00:26:6c:df:1c:f8
Dec 27 20:46:34 abe-Laptop dhclient: Sending on Socket/fallback
Dec 27 20:46:34 abe-Laptop dhclient: DHCPREQUEST of [An IP address] on eth0 to 255.255.255.255 port 67
Dec 27 20:46:51 abe-Laptop dhclient: last message repeated 3 times
Dec 27 20:46:51 abe-Laptop dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Dec 27 20:46:54 abe-Laptop dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
Dec 27 20:47:06 abe-Laptop dhclient: last message repeated 2 times
Dec 27 20:47:06 abe-Laptop dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Dec 27 20:47:16 abe-Laptop dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <warn> (eth0): DHCPv4 request timed out.
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> (eth0): canceled DHCP transaction, DHCP client pid 2177
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) scheduled...
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) started...
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> (eth0): device state change: 7 -> 9 (reason 5)
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> Marking connection 'Auto eth0' invalid.
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <warn> Activation (eth0) failed.
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) complete.
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> (eth0): device state change: 9 -> 3 (reason 0)
Dec 27 20:47:19 abe-Laptop NetworkManager[997]: <info> (eth0): deactivating device (reason: 0).
我在幾個論壇中搜尋過，發現了各種關於看起來相似的問題的討論，但似乎沒有一個完全匹配。關於如何診斷和解決這個問題有什麼建議嗎？
答案1
嗯，答案簡單得令人失望：從 Ubuntu 11.10 開始。我重新安裝了作業系統，現在一切正常。沒有解開這個謎團，但我現在可以繼續我的生活了。