Ubuntu 12.04 Slow Wireless

**vDub2000** · April 26th, 2012

I've been having some issues with my wireless network adapter. I've noticed that my download speeds are incredibly slow compared to what I'm used to seeing in Windows.

I've done some Google searches to try to determine and fix the problem, but nothing has worked thus far. I've ignored IPv6 with no change, and my adapter is currently using the RTL8192CU driver. I've had this issue in previous versions of Ubuntu as well.

Help?

**robgraves** · April 26th, 2012

If you're downloading via Ubuntu Software Center, apt, synaptic, etc. it is probably due to the fact that today is new release date, so everyone is downloading software, doing updates, etc. The servers are probably overloaded...

**vDub2000** · April 26th, 2012

This issue has been going on for the past few days, not just today.

**cromat** · April 26th, 2012

For the past few weeks I have had horribly slow speeds connecting to the software center as well. My connection is fine to my router, I think the servers have been bogged down for weeks now and especially today.

I also saw somewhere else they suggested making sure that the main source of packages is in the closest location to you it may have chosen the west coast or something when you will benefit from the east coast being in MI.

**wildmanne39** · April 26th, 2012

Hi, most people have not gotten that driver to work at all I believe, please post the output of:

Code:

cat /etc/lsb-release; uname -a
lspci -nnk | grep -iA2 net
lsusb
iwconfig
rfkill list all
lsmod
nm-tool

here by clicking on new reply and click # and paste the information between the brackets.
Thank you

**vDub2000** · April 26th, 2012

cat /etc/lsb-release; uname -a

Code:

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Linux ubuntu 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

lspci -nnk | grep -iA2 net

Code:

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 02)
	Subsystem: Giga-byte Technology GA-EP45-DS5 Motherboard [1458:e000]
	Kernel driver in use: r8169

lsusb

Code:

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 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 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN
Bus 002 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)
Bus 004 Device 002: ID 0451:2046 Texas Instruments, Inc. TUSB2046 Hub
Bus 003 Device 002: ID 03f0:3b11 Hewlett-Packard PSC 1300 series
Bus 004 Device 003: ID 046d:c315 Logitech, Inc. Classic New Touch Keyboard
Bus 004 Device 004: ID 0e6f:0301 Logic3 
Bus 004 Device 005: ID 0461:4d0f Primax Electronics, Ltd

iwconfig

Code:

lo        no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"(Removed from view)"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:12:17:3F:2B:04   
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=64/70  Signal level=-46 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:10208   Missed beacon:0

eth0      no wireless extensions.

rfkill list all

Code:

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

lsmod

Code:

Module                  Size  Used by
bnep                   18281  2 
rfcomm                 47604  0 
bluetooth             180104  10 bnep,rfcomm
vesafb                 13844  1 
nvidia              12319264  30 
usblp                  18307  0 
arc4                   12529  2 
snd_hda_codec_realtek   223867  1 
rtl8192cu             103297  0 
snd_hda_intel          33773  3 
rtl8192c_common        75767  1 rtl8192cu
snd_hda_codec         127706  2 snd_hda_codec_realtek,snd_hda_intel
rtlwifi               111202  1 rtl8192cu
snd_hwdep              13668  1 snd_hda_codec
snd_pcm                97188  2 snd_hda_intel,snd_hda_codec
mac80211              506816  3 rtl8192cu,rtl8192c_common,rtlwifi
snd_seq_midi           13324  0 
snd_rawmidi            30748  1 snd_seq_midi
snd_seq_midi_event     14899  1 snd_seq_midi
snd_seq                61896  2 snd_seq_midi,snd_seq_midi_event
snd_timer              29990  2 snd_pcm,snd_seq
cfg80211              205544  2 rtlwifi,mac80211
snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq
joydev                 17693  0 
usbhid                 47199  0 
xpad                   18179  0 
snd                    78855  15 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
hid                    99559  1 usbhid
ff_memless             13097  1 xpad
sp5100_tco             13791  0 
soundcore              15091  1 snd
snd_page_alloc         18529  2 snd_hda_intel,snd_pcm
serio_raw              13211  0 
i2c_piix4              13301  0 
edac_core              53746  0 
edac_mce_amd           23709  0 
mac_hid                13253  0 
k10temp                13166  0 
ppdev                  17113  0 
wmi                    19256  0 
parport_pc             32866  1 
lp                     17799  0 
parport                46562  3 ppdev,parport_pc,lp
usb_storage            49198  0 
firewire_ohci          41000  0 
firewire_core          63558  1 firewire_ohci
crc_itu_t              12707  1 firewire_core
pata_atiixp            13204  0 
r8169                  62099  0

nm-tool

Code:

NetworkManager Tool

State: connected (global)

- Device: wlan0  [(Removed from view)] -----------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8192cu
  State:             connected
  Default:           yes
  HW Address:        00:23:13:00:6F:C4

  Capabilities:
    Speed:           54 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    *(Removed from view):        Infra, 00:12:17:3F:2B:04, Freq 2437 MHz, Rate 54 Mb/s, Strength 75 WPA2

  IPv4 Settings:
    Address:         192.168.2.90
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.2.1

    DNS:             208.67.220.220
    DNS:             208.67.222.222


- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        00:24:1D:8B:15:8A

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

**wildmanne39** · April 26th, 2012

Hi, please try:

Code:

sudo modprobe -r rtl8192cu

sudo modprobe rtl8192cu swenc=1

do not reboot, if it works we will need to make it permanent.
Thanks

**vDub2000** · April 27th, 2012

Originally Posted by wildmanne39

Hi, please try:

Code:

sudo modprobe -r rtl8192cu

sudo modprobe rtl8192cu swenc=1

do not reboot, if it works we will need to make it permanent.
Thanks

Didn't work for me. Downloads are still as slow as ever.

**wildmanne39** · April 27th, 2012

Hi, leave that setting in and set your wireless setting to match the sreenshots.

Also some people have had to change the speed of there connection in the router to just g speed I believe.
Thanks