Problem in Wireshark on Ubuntu

Problem in Wireshark on Ubuntu

I got this error message when I want to use wireshark on ubuntu.
Wireshark detects no capture interfaces

I execute the command to see if my network driver or hardware are wrong.
>lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06)
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 06)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 310M] (rev a2)
01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1)
12:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
13:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)

That is strange. Finally, I realized that from google search. I need to run this software under root account.
Once I execute the command:
>su wireshark

1. Right click on Applications menu icon 'wireshark'.
2. Choose the 'Properties'
3. In the field labeled Command: add gksudo in front of wireshark.
command: gksudo wireshark

references:
http://ubuntuforums.org/showthread.php?t=761461
http://www.mikestechblog.com/joomla/operating-systems-section/operating-systems-ubuntu/131-ubuntu-wireshark-no-interfaces-eth0.html