I am a pretty clueless Ubuntu user, so bear with me. Yes I have searched extensively for an existing answer, but they all either make no sense to me or do not seem to apply.

Anyway, I installed a fresh version of 13.04 on my Dell inspirion 1721, and I have no wired or wireless connections. There are no additional drivers available in software and updates.

An interesting thing is that if I boot up with the usb stick that I used to install Ubuntu, the wired connection works fine and the Broadcom driver is listed in software and updates - additional drivers.

If anyone could point me in the next direction to go, I would greatly appreciate it.

Cat /ect/lsb-release; uname -a

    cat: /ect/lsb-release: No such file or directory 

Linux mike-Inspiron-1721 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:19:42 UTC    2013 i686 athlon i686 GNU/Linux 

lspci -nmk | grep -iA2 net

03:00.0 Ethernet controller [0200]: Broadcom Corporation BCM4401-B0 100Base-TX [14e4:170c] (rev 02) 

    Subsystem: Dell Device [1028:01fd] 

03:01.0 FireWire (IEEE 1394) [0c00]: Ricoh Co Ltd R5C832 IEEE 1394 Controller      [1180:0832] (rev 05) 

-- 

0b:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11a/b/g [14e4:4312] (rev 01) 

Subsystem: Dell Wireless 1490 Dual Band WLAN Mini-Card [1028:0007] 

Kernel driver in use: wl 

lsusb

Bus 001 Device 003: ID 0930:6544 Toshiba Corp. Kingston DataTraveler 2.0 Stick     (2GB) 

Bus 002 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth 

Bus 005 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) 

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 

Bus 005 Device 003: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass) 

Bus 005 Device 004: ID 0a5c:4503 Broadcom Corp. Mouse (Boot Interface Subclass) 

iwconfig

lo        no wireless extensions.

lsmod

Module                  Size  Used by 

nls_utf8               12493  1 

isofs                  39211  1 

nls_iso8859_1          12617  1 

parport_pc             27504  0 

bnep                   17669  2 

ppdev                  12817  0 

rfcomm                 37420  0 

bluetooth             202069  10 bnep,rfcomm 

snd_hda_codec_idt      63896  1 

snd_hda_intel          38307  3 

snd_hda_codec         117580  2 snd_hda_codec_idt,snd_hda_intel 

ssb                    69217  1 

snd_hwdep              13272  1 snd_hda_codec 

snd_pcm                80890  2 snd_hda_codec,snd_hda_intel 

wl                   3027822  1 

snd_page_alloc         14230  2 snd_pcm,snd_hda_intel 

radeon                870822  3 

snd_seq_midi           13132  0 

snd_seq_midi_event     14475  1 snd_seq_midi 

ttm                    71289  1 radeon 

snd_rawmidi            25114  1 snd_seq_midi 

snd_seq                51280  2 snd_seq_midi_event,snd_seq_midi 

drm_kms_helper         47545  1 radeon 

r852                   17873  0 

sm_common              16772  1 r852 

snd_seq_device         14137  3 snd_seq,snd_rawmidi,snd_seq_midi 

drm                   228750  5 ttm,drm_kms_helper,radeon 

snd_timer              24411  2 snd_pcm,snd_seq 

snd                    56485  15       snd_hwdep,snd_timer,snd_hda_codec_idt,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device 

nand                   49670  2 r852,sm_common 

soundcore              12600  1 snd 

kvm_amd                50336  0 

nand_ecc               13105  1 nand 

nand_bch               13003  1 nand 

joydev                 17097  0 

lib80211               14040  1 wl 

sp5100_tco             13447  0 

kvm                   376505  1 kvm_amd 

i2c_algo_bit           13197  1 radeon 

bch                    17226  1 nand_bch 

cfg80211              436177  1 wl 

dell_wmi               12601  0 

dell_laptop            17161  0 

i2c_piix4              13066  0 

sparse_keymap          13658  1 dell_wmi 

r592                   17707  0 

dcdbas                 14021  1 dell_laptop 

memstick               15842  1 r592 

nand_ids                8547  1 nand 

mtd                    38922  2 nand,sm_common 

psmouse                81038  0 

shpchp                 32129  0 

mac_hid                13037  0 

k8temp                 12842  0 

serio_raw              13031  0 

wmi                    18590  1 dell_wmi 

video                  18894  0 

ati_agp                13177  0 

lp                     13299  0 

parport                40753  3 lp,ppdev,parport_pc 

hid_generic            12484  0 

usbhid                 41805  0 

hid                    82666  2 hid_generic,usbhid 

pata_acpi              12886  0 

usb_storage            47684  1 

firewire_ohci          35292  0 

sdhci_pci              18158  0 

sdhci                  31824  1 sdhci_pci 

pata_atiixp            13058  1 

firewire_core          61718  1 firewire_ohci 

crc_itu_t              12627  1 firewire_core 

ahci                   25507  2 

libahci                26108  1 ahci 

The 'rfkill list all' comand returned nothing.

Thanks