[Ubuntu] Slow wifi connection - Ralink

Hardware Compatibility
1

Hello,
total linux noob here. I have got problem with internet connection. I have laptop HP Probook 4540s and I get 5-10 Mbps max, but when I try on Windows 8 I have got 40-50 Mbps. I don’t have idea where is the problem, I tried many solutions that I find on google, nothing works. Ubuntu version is 14.04 LTS.

Here is information about the wifi:

*-network               
       description: Wireless interface
       product: RT3290 Wireless 802.11n 1T/1R PCIe
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 00
       serial: 54:35:30:61:3e:e9
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=4.2.0-34-generic firmware=0.37 ip=192.168.0.101 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:19 memory:d0610000-d061ffff

Thanks.

2

Does running these 3 commands in sequence make any diifference

sudo modprobe -r rt2800pci

then

sudo modprobe rt2800pci nohwcrypt=1

?

Be aware, this will NOT survive a reboot, so if you reboot you’ll have to run those commands again … but if it helps, we can make it permanent.

If it makes no difference, please post the output from:

iwconfig
3

Hello,
after running these 2 commands, it disconnected me from the WIFI and I couldn’t connect anymore.

Here is the output from the iwconfig:

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"TP-LINK_B59046"  
          Mode:Managed  Frequency:2.452 GHz  Access Point: E8:94:F6:B5:90:46   
          Bit Rate=108 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=46/70  Signal level=-64 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:75  Invalid misc:56   Missed beacon:0

lo        no wireless extensions.
4

okay try this

echo "options rt2800pci nohwcrypt=1" | sudo tee /etc/modprobe.d/rt2800pci.conf

then REBOOT.

Now test wireless.

If that leaves you unable to connect, running:

sudo rm -v /etc/modprobe.d/rt2800pci.conf

then rebooting, should get you back to where you are now.

5

Now it is little bit better. It makes 15-20 Mbps, but on Windows is still 40-50 Mbps.

6

what’s the output from

iwconfig

again ?

7 
eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"TP-LINK_B59046"  
          Mode:Managed  Frequency:2.452 GHz  Access Point: E8:94:F6:B5:90:46   
          Bit Rate=108 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=44/70  Signal level=-66 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2744  Invalid misc:2102   Missed beacon:0

lo        no wireless extensions.
8

Where are you getting your figures of

15 - 20mbps from ?

as that output suggests you have a wireless link speed to your router of

Bit Rate=108 Mb/s

But the “Tx excessive retries” and “Invalid misc” count has actually risen since we applied that “fix” … so if I were you I’d remove the fix with:

sudo rm -v /etc/modprobe.d/rt2800pci.conf

then log off/on (or reboot)

9

I am testing it at speedtest.net

Windows:

http://s13.postimg.org/laptyctjb/windows.png

Linux:

http://s10.postimg.org/hao1xy515/linux.png

10

Are these tests both on the same machine, or two different ones ?

Are they both full installs ?

11

It’s the same machine.
And they are full installs - I’m not using virtual machine - if that is the question.

12

Try setting IPv6 to “Ignore” in networkmanager.

and how do they compare when the tests are run using an ethernet cable rather than wireless ?

13

With cable on Ubuntu: Speedtest by Ookla - The Global Broadband Speed Test - everything is fine.

I wasn’t able to find networkmanager - is this will do the job: How to disable IPv6 in Ubuntu 14.04? - Ask Ubuntu ? (I think I disabled it, when I was searching for the problem from google, but I am not sure)

14

Networkmanager is an icon by your clock … you should be able to right-click it and select “edit connections”

then select your wireless profile and click “Edit”

then on the IPv6 tab, change

Method: Ignore

then save the connection.

then log off/on.

But you can disable IPv6 altogether by your method if you wish

If no improvement, can you post the output from:

lspci -vnn | grep -i net
15

There is little improvement - Speedtest by Ookla - The Global Broadband Speed Test

Here is the output:


04:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]
05:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 07)
16

Can we also have to output from:

uname -a
17 
Linux valentin 4.2.0-34-generic #39~14.04.1-Ubuntu SMP Fri Mar 11 11:38:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
18

Okay, you game for compiling the rt3290sta driver and giving it a shot ?

Can you post the output from:

dpkg -l | build-essential

and

dpkg -l | grep linux-image-generic
19

I will do what ever you say, man :smiley: You just need to guide me

Strange, the first line outputs:

build-essential: command not found

even though when I type sudo apt-get install build-essential it outputs:

build-essential is already the newest version.

Second line:

ii  linux-image-generic                                   3.13.0.83.89                                        amd64        Generic Linux kernel image
ii  linux-image-generic-lts-wily                          4.2.0.34.27                                         amd64        Generic Linux kernel image
20

Okay, open a terminal and run these commands in sequence:

mkdir ~/rt3290sta

then

cd ~/rt3290sta

then

wget https://github.com/pkeeper/rt3290sta/archive/master.zip

then

unzip master.zip

then

cd ~/rt3290sta/rt3290sta-master

then

make

then

sudo make install

then

sudo modprobe -r rt2800pci rt2x00pci

then

sudo modprobe rt3290sta

did wireless come to life … and is it better ?

what’s the output now from:

sudo lshw -C network

?

BE AWARE - this driver will probably not survive a reboot, but if it was any better we can make it permanent.

To undo

Run:

cd ~/rt3290sta/rt3290sta-master

then

sudo make uninstall

then

sudo rmmod rt3290sta

then

sudo modprobe rt2800pci

(or rebooot afer the first 2 undo commands)

.