I have the same problem, but my card is a

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB 
Wireless LAN Controller (rev 10)
        Subsystem: Quanta Microsystems, Inc Device 0308
        Flags: bus master, fast devsel, latency 0, IRQ 16
        I/O ports at 3000 [size=256]
        Memory at b8100000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [70] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Virtual Channel
        Capabilities: [160] Device Serial Number 88-55-22-fe-ff-4c-e0-00
        Kernel driver in use: rtl8192se
        Kernel modules: rtl8192se

normally I run the command "sudo modprobe -r rtl8192se && sudo modprobe
rtl8192se" some times to connect to my AP. When it works it will connect
in the first try.

The strange thing is that with other AP it always connect correclty. My
AP is not using any authentication method, just a mac filter.

I have a second AP that connect to my app. At the beginning I have
thinked that the problem is it, but the problem still occurs even after
I configured the BSSID and in log only show the correct MAC of my AP.

The problem exists in 11.10, I have upgrade with hope that it has been
fixed :(

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https://bugs.launchpad.net/bugs/929244

Title:
  Cannot connect to wireless network in 12.04 Alpha 2

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