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I am new to Ubuntu. For a few minutes after turning on my laptop the internet will work, and then it will disconnect. It normally stays connected for 5-15 minutes, then it will disconnect and I won't be able to connect unless I restart the laptop. Someone please help !!!! Thank you.

I tried following the instructions in the answer to this question: How do I get a Ralink RT3290 wireless card working? by Luis Alvarado, but it didn't work.

00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Complex [1022:1410]
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD 8550G] [1002:990d]
00:01.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller [1002:9902]
00:04.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port [1022:1414]
00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7814] (rev 09)
00:10.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7814] (rev 09)
00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7804]
00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller [1022:7807] (rev 11)
00:12.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 11)
00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller [1022:7807] (rev 11)
00:13.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 11)
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:780b] (rev 16)
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller [1022:780d] (rev 01)
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:780e] (rev 11)
00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge [1022:780f] (rev 40)
00:15.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0) [1022:43a0]
00:15.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1) [1022:43a1]
00:15.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 3) [1022:43a3]
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 0 [1022:1400]
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 1 [1022:1401]
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 2 [1022:1402]
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 3 [1022:1403]
00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 4 [1022:1404]
00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 5 [1022:1405]
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
04:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]
04:00.1 Bluetooth [0d11]: Ralink corp. RT3290 Bluetooth [1814:3298]
05:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader [10ec:5229] (rev 01)
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  • If your device is built in to the laptop, it is most likely a PCI device and can be identified from a terminal command: lspci -nn. You can list only devices of the class 'wireless networking' with: lspci -nn | grep 0280. Running these commands will help to provide information about the model of wireless adapter in your laptop.
    – karel
    Apr 1, 2014 at 5:47
  • @karel It wouldn't let me add it as a comment, so I edited my original post.
    – Bruce Leroy
    Apr 1, 2014 at 5:59
  • @karel 04:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]
    – Bruce Leroy
    Apr 1, 2014 at 5:59
  • 1
    Which Ubuntu version are you using? lsb_release -a. If it is 12.04, which kernel: uname -r Thanks.
    – chili555
    Apr 1, 2014 at 12:49
  • 1
    @chili555 3.11.0-12-generic. Thank you for coming btw
    – Bruce Leroy
    Apr 1, 2014 at 18:22

1 Answer 1

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I suspect the most productive thing you might try is to compile the backported driver from kernel version 3.13. Please get a temporary wired ethernet, USB modem, tethered or any reliable internet connection. Open a terminal and do:

sudo apt-get install linux-headers-generic build-essential

Download this file to your desktop: http://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.13.2/backports-3.13.2-1.tar.xz Right-click it and select 'Extract Here.' Now back to the terminal:

cd ~/Desktop/backports-3.13.2-1
make defconfig-wifi
make
sudo make install

The process takes some time; please be patient. After it completes, you may get a warning about signing which you may safely ignore. Reboot and let us have your report.

I understand you may have tried several techniques. Do you have a parameter file? We ought to see what is in it and decide if we still need it:

cat /etc/modprobe.d/rt2800pci.conf
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