Natty upgrade, lost wifi

[ephemerian]

After being prompted by UpdateManager, I upgraded my Compaq Presario CQ71 from 10.10 to 11.04 yesterday. Most things seem fine, except that my wifi is disabled (it was working fine in 10.10). Here are some details:


root@ian-laptop # lshw -C network
*-network DISABLED
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 0c:60:76:3d:5e:02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=2.6.38-8-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:16 memory:d3500000-d350ffff
*-network
description: Ethernet interface
product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: 02
serial: 00:26:9e:2d:37:0a
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.122 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:42 ioport:2000(size=256) memory:d1410000-d1410fff memory:d1400000-d140ffff memory:d1420000-d142ffff

root@ian-laptop # uname -a
Linux ian-laptop 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Any suggestions as to what I can try or do next?

Thanks,
Ian

[ephemerian]

Not quite sure what the issue was, but a quick trip via the Win7 dual boot seems to have restored wifi functionality. As well as the Natty upgrade, I was doing my once-in-a-blue-moon apply all Windows updates, so I'm guessing that something there left my wireless nic in an unusual state. But I hardly ever use the dual boot (hence only infrequent updates), so I'm anticipating few problems in future.