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[Bug 1002884] Re: 8086:4222 [Dell Vostro 1500] Slow 3945abg - 12.04


Requested info:

uname -a:
Linux Vostro-1500 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

1. What is the full computer model number (ex. HP G32-301TX Notebook PC)?
Dell Vostro 1500 Notebook (Model PP22L)
2. If you update your BIOS to the newest version, does this change anything?
Already using the last BIOS

3. Regarding your wireless Access Point (AP):
The problem exist with all the Access Points I use to test

4. If you adjust any the following does it change anything:
Nothing changed

5. Does another wireless device tested with the AP have the same problem as the hardware you initially reported with?

6. What is the distance of the wireless device from AP?
1.5 m

7. What is the number and type of obstructions between your device and the AP?
    7a. If you bring the device close to the AP and eliminate obstructions, does this change anything? 

8. Does the issue occur with different APs?

9. Is it a regression (e.g. did the problem happen in a prior Ubuntu release)?
    9a. If so, what release specifically did it last work with?

    9b. If you do not know, could you please test for this in the earliest release of Ubuntu that is supported as per Ubuntu Releases? 

10. Does this problem occur in the newest mainline kernel following https://wiki.ubuntu.com/Kernel/MainlineBuilds? Please mention what specific version of the mainline kernel you tested with in your report.

    10a. If the mainline works, does either the development release or the Ubuntu provided stable compat-wireless backport work following https://wiki.ubuntu.com/Kernel/LinuxWireless#Compat-wireless_in_Ubuntu? Please mention in your report the specific version you tested. 
   10b. If the mainline does not work, could you please test upstream's compat-wireless backport via https://wiki.ubuntu.com/Kernel/LinuxWireless#Compat-wireless_from_upstream? Please mention in your report the specific version you tested. 

11. Does ndiswrapper work following
https://help.ubuntu.com/community/WifiDocs/Driver/Ndiswrapper? Please
mention what specific version of ndiswrapper you tested with, and a link
to the Windows driver you used in your report. Info <!> If ndiswrapper
does not work, you are welcome to file a new bug report by executing at
a terminal:

Works better: 1.27 Mbps
Driver: http://www.dell.com/support/drivers/us/en/19/DriverDetails?driverId=M1PPT

ubuntu-bug ndiswrapper-utils-1.9

12. Only for Broadcom wireless chipsets, does the Broadcom STA driver work following https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx? Please mention what specific version of Broadcom STA you tested with in your report.

13. Only for Realtek wireless chipsets, does the upstream Realtek drivers downloaded from http://www.realtek.com.tw work? Please mention what specific version of the drivers you tested with in your report. 

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  8086:4222 [Dell Vostro 1500] Slow 3945abg - 12.04

Status in The Linux Kernel:
Status in “linux” package in Ubuntu:

Bug description:

  I was suffering slow wifi transfers with my Vostro 1500 (Intel
  3945abg). 10.04 was ok, but since then, no mather what, the speed has
  been awfull. Recently upgraded to 12.04, but no-luck. Transfers
  between 40KBs and 70KBs... Wired connections to the same router allow
  me to connect up to 320KBs.... I already did everything a could
  without success... You can see previous info at bug #621265

  My info:

  uname -a
  Linux Vostro-1500 3.2.0-24-generic-pae #38-Ubuntu SMP Tue May 1 16:40:26 UTC 2012 i686 i686 i386 GNU/Linux

  lsb_release -rd
  Description:	Ubuntu 12.04 LTS
  Release:	12.04

  dmesg|grep 3945
  [   15.120687] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
  [   15.120691] iwl3945: Copyright(c) 2003-2011 Intel Corporation
  [   15.120764] iwl3945 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
  [   15.120781] iwl3945 0000:0c:00.0: setting latency timer to 64
  [   15.205631] iwl3945 0000:0c:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
  [   15.205637] iwl3945 0000:0c:00.0: Detected Intel Wireless WiFi Link 3945ABG
  [   15.205798] iwl3945 0000:0c:00.0: irq 44 for MSI/MSI-X
  [   15.290958] ieee80211 phy0: Selected rate control algorithm 'iwl-3945-rs'
  [   15.817051] iwl3945 0000:0c:00.0: loaded firmware version

  lo        no wireless extensions.

  wlan0     IEEE 802.11abg  ESSID:"WiFiCasa"  
            Mode:Managed  Frequency:2.412 GHz  Access Point: 00:22:33:FC:6A:50   
            Bit Rate=2 Mb/s   Tx-Power=15 dBm   
            Retry  long limit:7   RTS thr:off   Fragment thr:off
            Power Management:off
            Link Quality=50/70  Signal level=-60 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:37421   Missed beacon:0

  eth0      no wireless extensions.

  lspci -vnn |grep -A3 Wireless
  0c:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4222] (rev 02)
  	Subsystem: Intel Corporation Device [8086:1020]
  	Flags: bus master, fast devsel, latency 0, IRQ 44
  	Memory at f9fff000 (32-bit, non-prefetchable) [size=4K]

  lsmod|grep iwl3945
  iwl3945                73152  0 
  iwl_legacy             71134  1 iwl3945
  mac80211              436455  2 iwl3945,iwl_legacy
  cfg80211              178679  3 iwl3945,iwl_legacy,mac80211

  any idea????


  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
   /dev/snd/controlC0:  dvanzo     2020 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=d1501098-2605-4807-a125-f3e21ca0936a
  InstallationDate: Installed on 2013-10-18 (31 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. Vostro 1500
  MarkForUpload: True
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=19a4f3f6-b8be-4ad6-9128-cd758dfb3956 ro quiet splash
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 04/21/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A06
  dmi.board.name: 0WY040
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA06:bd04/21/2008:svnDellInc.:pnVostro1500:pvr:rvnDellInc.:rn0WY040:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Vostro 1500
  dmi.sys.vendor: Dell Inc.

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