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Linux newbie here. I've tried looking at other threads, but haven't been able to figure this out.

I just installed Ubuntu 14.04 LTS (32 Bit) on an Asus 1015PEM netbook with a Ralink RT3090 wifi card. I did a complete install and wiped Windows 7 off the system.

Wifi worked great with 7, I had a 65 Mbps connection. Now it drops to 6 or 1 Mbps and I cannot connect Wirelessly.

Here is part of what I got with lshw:

*-network
description: Wireless interface product: RT3090 Wireless 802.11n 1T/1R PCIe vendor: Ralink corp. physical id: 0 bus info: pci@0000:02:00.0 logical name: wlan0 version: 00 serial: 48:5d:60:6a:80:9e width: 32 bits clock: 33MHz capabilities: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rt2800pci driverversion=4.2.0-30-generic firmware=0.34 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:17 memory:fbff0000-fbffffff

Help!

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  • Possible duplicate of Ralink RT3090 in Ubuntu 14.04 -- Very bad reception + keeps disconnecting
    – hazrpg
    Mar 2, 2016 at 0:16
  • Also is your network/router set to Wireless N?
    – hazrpg
    Mar 2, 2016 at 0:18
  • Yes, it is. I have also tried b/g/n.
    – Rick R
    Mar 3, 2016 at 19:13
  • Do you mean you tried setting your router to only broadcast b only, then g only and then n only? With my laptop I had to disable wireless n either at the router or on the laptop to prevent the issues you're also having. However my card is different, I have the Intel Centrino Wiressless N.
    – hazrpg
    Mar 3, 2016 at 19:51
  • No. I used the performance mode n setting only, and then tried the compatibility mode b/g/n. I really don't want to disable n and slow down my other connections.
    – Rick R
    Mar 4, 2016 at 17:04

2 Answers 2

Reset to default
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What is your current kernel?

You can find that thru a uname - r https://www.kernel.org Check if your version is the latest if not http://www.yourownlinux.com/2016/02/how-to-install-linux-kernel-4-4-3-in-linux.html?m=1

Follow the instructions on the link below and select 32 or 64 according to your distro type.

This happened on a laptop of mine and updating kernel sorted the problem maybe this can fix your problem as well

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  • I had an older one and updated to 4.4.3. Still no good. I have been using a T Link micro usb adapter, which uses a Realtek driver and works fine. Still, I'd rather have the internal one working.
    – Rick R
    Mar 3, 2016 at 19:13
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On Ubuntu Eoan 19.10, you have to edit the /etc/modprobe.d/blacklist.conf file and to add at the end of this file

#blacklist rt2800pci 
blacklist rt2800lib 
blacklist rt2800mmio 
blacklist rt2x00usb 
#blacklist rt2x00pci 
blacklist rt2x00lib 
blacklist rt2x00mmio 
#blacklist rt2860sta

Source : Dsfc

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