I'm not sure what's causing the problem, nevertheless, I began to encounter regular wireless disconnections after upgrading to Ubuntu 12.04.1 LTS.
Using System Profiler and Benchmark utility, I've checked if all drivers working as intended. Seems like there is no problem from this perspective.
So, I've decided to go with a temporarily solution by using WICD network manager, some individuals said it keeps the wireless connection stable. - However, not in my case.
Furthermore, I've tried using manual settings for IPv4, instead of using DHCP. (Also disabled IPv6). Performed sudo /etc/init.d/networking restart (temporary fix) ...
Also, I tried the backports solution and the ndiswrapper solution - nothing is working.
Including some information for reference:
Hardware information: lshw -C network
*-network description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
version: 01
serial: 00:1a:4d:52:ee:1d
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=N/A latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:44 ioport:d000(size=256) memory:e9000000-e9000fff memory:ea300000-ea31ffff
*-network description: Wireless interface
product: RT2800 802.11n PCI
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlan0
version: 00
serial: 00:0e:2e:e5:56:0c
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt2800pci driverversion=3.2.0-29-generic-pae firmware=0.34 ip=192.168.0.4 latency=32 link=yes maxlatency=4 mingnt=2 multicast=yes wireless=IEEE 802.11bgn
resources: irq:20 memory:ea100000-ea10ffff
lspci
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
05:00.0 Network controller: Ralink corp. RT2800 802.11n PCI
For some reason cannot insert result from lspci -vvv in PRE format
iwconfig
wlan0
IEEE 802.11bgn ESSID:"PRV"
Mode:Managed Frequency:2.422 GHz Access Point: 00:26:F2:46:50:90
Bit Rate=135 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=52/70 Signal level=-58 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:3271 Invalid misc:137 Missed beacon:0
I don't take advantage of network encryption as other connected devices don't support certain types of encryption, hence, instead I've created a MAC access-list and disabled network name broadcasting. (SSID)
Notice the number of invalid misc. Some packets lost in relation with specific wireless operations, how can this be eliminated? + excessive retries.
rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Modules
Module Size Used by
pci_stub 12550 1
vboxpci 22882 0
vboxnetadp 25616 0
vboxnetflt 27211 0
vboxdrv 252228 3 vboxpci,vboxnetadp,vboxnetflt
rfcomm 38139 0
bnep 17830 2
bluetooth 158438 10 rfcomm,bnep
vesafb 13516 1
binfmt_misc 17292 1
snd_hda_codec_realtek 174222 1
snd_hda_intel 32765 3
snd_hda_codec 109562 2 snd_hda_codec_realtek,snd_hda_intel
arc4 12473 2
snd_usb_audio 101566 2
snd_pcm 80845 3 snd_hda_intel,snd_hda_codec,snd_usb_audio
rt2800pci 18340 0
rt2800lib 53264 1 rt2800pci
crc_ccitt 12595 1 rt2800lib
rt2x00pci 14202 1 rt2800pci
snd_hwdep 13276 2 snd_hda_codec,snd_usb_audio
snd_usbmidi_lib 24603 1 snd_usb_audio
rt2x00lib 48805 3 rt2800pci,rt2800lib,rt2x00pci
snd_seq_midi 13132 0
snd_seq_midi_event 14475 1 snd_seq_midi
mac80211 436455 3 rt2800lib,rt2x00pci,rt2x00lib
snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
joydev 17393 0
snd_rawmidi 25424 2 snd_usbmidi_lib,snd_seq_midi
snd_timer 28931 2 snd_pcm,snd_seq
ppdev 12849 0
snd_seq_device 14172 3 snd_seq_midi,snd_seq,snd_rawmidi
nvidia 10962290 40
cfg80211 178679 2 rt2x00lib,mac80211
parport_pc 32114 1
psmouse 72919 0
eeprom_93cx6 12653 1 rt2800pci
serio_raw 13027 0
snd 62064 21 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_usb_audio,snd_pcm,snd_hwdep,snd_usbmidi_lib,snd_seq,snd_rawmidi,snd_timer,snd_seq_device
mac_hid 13077 0
soundcore 14635 1 snd
snd_page_alloc 14108 2 snd_hda_intel,snd_pcm
lp 17455 0
parport 40930 3 ppdev,parport_pc,lp
pata_jmicron 12651 0
usbhid 41906 0
hid 77367 1 usbhid
floppy 60310 0
r8169 56321 0
Creating a shell script file to reset wireless interface network 'module', didn't help.
#!/bin/sh
service network-manager stop
modprobe -r rt2800pci
modprobe rt2800pci
service network-manager start
If I haven't presented specific information, let me know.
Thank you in advance! :)
I actually have the same card so I know where you're coming from. I haven't had any issues surprisingly, as I did in the past.
My suggestion would be to try compiling the compat-wireless drivers from source.
You can download from: Linux Wireless - Stable
I recommend using compat-wireless-3.5.4-1-snpc
sudo apt-get install linux-headers-$(uname -r) build-essential
tar jvxf compat-wireless-3.5.4-1-snpc.tar.bz2
cd compat-wireless-3.5.4-1-snpc
./scripts/driver-select rt2x00
make
sudo make install
Then do a reboot.
If that doesn't work I'd try updating the kernel to the latest. I'm on 3.2.0.31.34 without any problems, and I did not need to compile the drivers.
sudo apt-get update
sudo apt-get dist-upgrade
sudo reboot now
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