Já tentou usar o comando no terminal : lspci ?
Para mim aparece a placa wireless assim:
gilson@ubuntu:~$ lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400] Chipset Host Bridge
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
0000:00:08.0 Modem: ALi Corporation SmartLink SmartPCI561 56K Modem
0000:00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
0000:00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8180L 802.11b MAC (rev 20)
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
0000:00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
0000:00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
0000:01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video (rev 01)
no caso minha placa:
0000:00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8180L 802.11b MAC (rev 20)