Ubuntu 12.10 无网络且无图形

Question

我最近将 Ubuntu 12.04 升级到 12.10 却发现它无法连接到任何网络，无论是有线网络还是无线网络，并且图形也因为屏幕分辨率低而混乱。

对于 12.04，我的系统运行良好。我不知道为什么升级把它搞得这么糟。重新安装操作系统是一个问题，因为我已经设置了很多无法再次设置的开发环境。

一些输出：

lspci -nn | grep 0200：

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)

nm-tool：

NetworkManager Tool

State: disconnected

cat /etc/network/interfaces：

auto lo
iface lo inet loopback

sudo cat /var/log/syslog | grep etwork | tail -n20：

Nov  2 13:50:22 Cobalt NetworkManager[978]:    SCPlugin-Ifupdown: (-1240454760) ... get_connections (managed=false): return empty list.
Nov  2 13:50:22 Cobalt NetworkManager[978]:    Ifupdown: get unmanaged devices count: 0
Nov  2 13:50:22 Cobalt bluetoothd[1016]: Failed to init network plugin
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> modem-manager is now available
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> monitoring kernel firmware directory '/lib/firmware'.
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> WiFi enabled by radio killswitch; enabled by state file
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> WWAN enabled by radio killswitch; enabled by state file
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> WiMAX enabled by radio killswitch; enabled by state file
Nov  2 13:50:22 Cobalt NetworkManager[978]: <info> Networking is enabled by state file
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> bluez error getting default adapter: Message did not receive a reply (timeout by message bus)
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> bluez error getting default adapter: Message did not receive a reply (timeout by message bus)
Nov  2 13:50:22 Cobalt kernel: [   28.688167] type=1400 audit(1351882222.452:10): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1046 comm="apparmor_parser"
Nov  2 13:50:22 Cobalt bluetoothd[1062]: Failed to init network plugin
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> bluez error getting default adapter: Message did not receive a reply (timeout by message bus)
Nov  2 13:50:22 Cobalt bluetoothd[1118]: Failed to init network plugin
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> bluez error getting default adapter: Message did not receive a reply (timeout by message bus)
Nov  2 13:50:22 Cobalt bluetoothd[1237]: Failed to init network plugin
Nov  2 13:50:22 Cobalt NetworkManager[978]: <warn> bluez error getting default adapter: Message did not receive a reply (timeout by message bus)

ps aux | grep -i network：

root       978  0.0  0.1  23732  4808 ?        Ssl  13:50   0:00 NetworkManager

sudo modprobe -r forcedeth：

FATAL: Module forcedeth not found

Answer 1

sudo apt-get remove bcmwl-kernel-source

\n\n

sudo apt-get purge bcmwl-kernel-source

\n\n

sudo apt-get install linux-firmware-nonfree

\n\n

我发现，按照这些说明操作并重新启动计算机可以修复无线适配器。\xc2\xa0不要\xc2\xa0通过\xc2\xa0系统设置、其他驱动程序安装 Broadcom 专有驱动程序，否则只需重置全部返还给那些不工作的人！

\n

Answer 2

同样的事情也发生在我身上，但我只是再次运行更新管理器，而没有连接电缆或移动宽带。更新管理器告诉我有可用的更新已下载但未安装，然后我单击安装并重新启动计算机。一切正常。尝试一下。