昨天我从 Ubuntu 12.10 升级到了 13.04。我非常喜欢它，直到我意识到无线连接只能持续大约五分钟，然后就无法使用了。我到处搜索，最后尝试了这个和这个。什么都不起作用，所以我最终恢复使用 12.10，一切又恢复正常了。我现在很想使用 13.04，所以我寻求帮助来解决这个问题。
这是我重新安装 12.10 后获得的一些系统信息，如果有任何其他信息有用，请告诉我。谢谢！
*-network description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.2
bus info: pci@0000:02:00.2
logical name: eth0
version: 0a
serial: 20:6a:8a:80:f3:58
size: 10Mbit/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=half firmware=rtl8411-1_0.0.3 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:43 ioport:2000(size=256) memory:f0404000-f0404fff memory:f0400000-f0403fff
*-network
description: Wireless interface
product: AR9462 Wireless Network Adapter
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 01
serial: 44:6d:57:b0:fc:5b
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.5.0-27-generic firmware=N/A ip=10.7.190.29 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:19 memory:f0500000-f057ffff memory:dfa00000-dfa0ffff