My internet connection is extremely slow after installing 11.04, It took me over night to download and install firefox flash player pluggin. I have a laptop on the same network which is running windows7 and the speed from that is extremely fast. Update manager is showing 10.1kb/s. This is really surreal.

I have done some googling around and noticed others having the same problem recommend the command below to do the trick:

sudo -s
echo "options ath9k nohwcrypt=1" > /etc/modprobe.d/ath9k.conf

I am not using Atheros wire/wireless card. My machine is installed with Broadcom Gigabit Ethernet card. Do anyone know how to resolve this issue.

I have done some search around here, and found a few post which seems to experience the same issue - but none of the suggested solution seems to help.

When i run lspci, i get below output.

00:00.0 Host bridge: Intel Corporation E7230/3000/3010 Memory Controller Hub (rev 81) 
00:01.0 PCI bridge: Intel Corporation E7230/3000/3010 PCI Express Root Port (rev 81) 
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01) 
00:1c.5 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 (rev 01) 
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01) 
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01) 
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01) 
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01) 
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 
00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 01) 
01:00.0 VGA compatible controller: nVidia Corporation GT216 [GeForce GT 220] (rev a2) 
01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1)
**07:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI** Express (rev 11)


  • 2
    possible duplicate of askubuntu.com/questions/46836/… – suli8 Jun 21 '11 at 13:30
  • Downloading Flash may be slow because you hit a slow mirror. Test your connection with speedtest.net to make sure it's really slow. – mikewhatever Jun 21 '11 at 17:24
  • I have followed the instruction from the link above and no joy. installing application take extremely long time. Ubuntu software centre installations are extremely slow. – Bitmap Jun 21 '11 at 22:01
  • Do you think rollback to 10 will be any good? – Bitmap Jun 22 '11 at 8:00
  • @bitmap - you perhaps need more details about your card (lspci, lshw) etc - are you talking about a wireless card or a wired connection? If a wireless card, does this solution work for your?/ ubuntuforums.org/showthread.php?t=1604868&page=22 – fossfreedom Jun 22 '11 at 20:10

After days of struggling with my connection speed, I finally decide I go down to the port level to investigate. Both my phone and ADSL were going via the same micro-filter. I had a spare phone port and micro-filter available therefore I have seperated the phone and ADSL to have their own independent telephone port, each connected through a micro-filter.

I then phone my provider to made a little fuss - now I am back to the super rocket speed again.

Thanks all for your support.

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