** Description changed:

  Ubuntu 11.10 Oneiric ocelot Desktop 64-AMD. Lenovo Ideapad s205
  After blacklisting acer_wmi in /etc/modprobe.d/blacklist.conf wifi seems to 
work and can connect. see Bug: #875659
  But Network speed drops very fast and after1-2 minutes it is stable under 
50-70Kb/s,  and other devices on the wifi network looses their connection.
  Bug #651778 is an older bug (unsolved) about R3090 but concerns RT3090 being 
unstable, it does not appear to be the same bug.
  On Ubuntu forums there are several threads with different solutions: 
Installing older version of Markus Heberling's Ralink 3090 driver, install 
compat-wireless driver, but some solutions  are not consistent for different 
users on the same hardware.
+ 
+ WORKAROUND: In Oneiric with kernel >= 3.0.0.13, blacklist acer_wmi , and
+ use the rt2x00 drivers from https://launchpad.net/ubuntu/+source/linux-
+ backports-modules-3.0.0 from 22nd November 2011.
+ 
+ Add to /etc/rc.local:
+ iwconfig wlan0 power off
  
  WORKAROUND: In release prior to Precise, I installed this driver: 
https://launchpad.net/~markus-tisoft...0~ppa1_all.deb
  It did not work with newer driver.
  
  Blacklisted "acer_wmi" in /etc/modprobe.d/blacklist.conf
  
  Added "rt3090sta" to /etc/modules
  
  Original source:
  http://ubuntuforums.org/showpost.php?p=11391544&postcount=20
  
  WORKAROUND: In Precise, once the Ralink driver is downloaded, unpack and
  edit the file ../common/cmm_wpa.c :
  
  Code:
  
  UCHAR PrimaryRsnie;
-   BOOLEAN bMixCipher = FALSE; // indicate the pairwise and group cipher are 
different
-   UCHAR p_offset;
+   BOOLEAN bMixCipher = FALSE; // indicate the pairwise and group cipher are 
different
+   UCHAR p_offset;
  - WPA_MIX_PAIR_CIPHER FlexibleCipher = MIX_CIPHER_NOTUSE; // it provide the 
more flexible cipher combination in WPA-WPA2 and TKIPAES mode
  + WPA_MIX_PAIR_CIPHER FlexibleCipher = WPA_TKIPAES_WPA2_TKIPAES; // it 
provide the more flexible cipher combination in WPA-WPA2 and TKIPAES mode
  
  then lastly in the file ../os/linux/config.mk :
  Code:
  
  HAS_GREENAP_SUPPORT=n
-  #Support MAC80211 LINUX-only function
+  #Support MAC80211 LINUX-only function
  -HAS_CFG80211_SUPPORT=y
  +HAS_CFG80211_SUPPORT=n
  
-  #Support RFKILL hardware block/unblock LINUX-only function
-  HAS_RFKILL_HW_SUPPORT=y
+  #Support RFKILL hardware block/unblock LINUX-only function
+  HAS_RFKILL_HW_SUPPORT=y
  
  Run "sudo make ; sudo make install", blacklist "acer_wmi" in
  /etc/modprobe.d/blacklist.conf , and you should have a working built
  module/driver.
  
  It's helpful to blacklist rt2800pci so the system doesn't use this - it
  will use the new rt3090sta/rt2860 instead after a reboot...
  
  Original Source:
  http://ubuntuforums.org/showpost.php?p=11672761&postcount=71
  
  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  mads       1601 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Generic'/'HD-Audio Generic at 0xf0244000 irq 44'
     Mixer name : 'ATI R6xx HDMI'
     Components : 'HDA:1002aa01,00aa0100,00100200'
     Controls      : 4
     Simple ctrls  : 1
  Card0.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Card1.Amixer.info:
   Card hw:1 'SB'/'HDA ATI SB at 0xf0240000 irq 16'
     Mixer name : 'Conexant CX20590'
     Components : 'HDA:14f1506e,17aa6005,00100002'
     Controls      : 8
     Simple ctrls  : 5
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=43d5b530-46f6-47fd-9f9f-382af486bce3
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: LENOVO 1038D4G
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic 
root=UUID=84e0bb29-2934-4576-9619-4d55b3707f23 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  StagingDrivers: rts5139
  Tags:  oneiric running-unity staging
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 08/10/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 4BCN24WW
  dmi.board.asset.tag: Base Board Asset Tag Unknown
  dmi.board.name: Inagua
  dmi.board.vendor: LENOVO
  dmi.board.version: 109-B78210-00A
  dmi.chassis.asset.tag: Chassis Asset Tag Unknown
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Chassis Version Unknown
  dmi.modalias: 
dmi:bvnLENOVO:bvr4BCN24WW:bd08/10/2011:svnLENOVO:pn1038D4G:pvrIdeapadS205:rvnLENOVO:rnInagua:rvr109-B78210-00A:cvnLENOVO:ct10:cvrChassisVersionUnknown:
  dmi.product.name: 1038D4G
  dmi.product.version: Ideapad S205
  dmi.sys.vendor: LENOVO

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https://bugs.launchpad.net/bugs/896582

Title:
  1814:3090 RT3090 Network speed are very low

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