kernel-packages team mailing list archive

[reportXubuntu <802902@xxxxxxxxxxxxxxxxxx>]

Maybe address bug with wg111v3 to  linux driver rtl8187 (or kernel)
implementation of AGC?

"The RTL8187B supports fast receiver Automatic Gain Control (AGC) and
antenna diversity functions, and an adaptive transmit power control
function to obtain better performance in the analog portions of the
transceiver. It also has on-chip digital-to-analog converters and
analog-to-digital converters for analog I and Q inputs and outputs,
transmit TSSI and receiver RSSI inputs, and transmit and receiver AGC
outputs. "

quote is taken from the link
http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PNid=24&PFid=1&Level=6&Conn=5&ProdID=143

This part "adaptive transmit power control function to obtain better performance"
i want to paraphrase "adaptive transmit power control function to make more trouble for linux users" :D

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https://bugs.launchpad.net/bugs/802902

Title:
  Realtek rtl8187b wireless chipset slow speed

Status in The Linux Kernel:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  Hi, I have ubuntu 11.04, all updates, wifi chipset rtl8187B, kernel 2.6.38-10, and 14mbit/s internet connection. 
  When I try to download something, for example from torrents, I see ping up (up to 500-800ms), slow speed (<1mbit/s) and packets lost.
  In windows its works fine, ping didnt up, download speed 14mbit/s. 
  So if I want to download something, I need to reboot from ubuntu to windows, or wait for download at low speed in ubuntu. And it's not good=(
  Thanks, and sorry my bad english.

  laptop:~$ uname -a
  Linux mike-laptop 2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2 21:32:22 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

  laptop:~$ modprobe --show-depends rtl8187
  insmod /lib/modules/2.6.38-10-generic/updates/drivers/misc/eeprom/eeprom_93cx6.ko
  insmod /lib/modules/2.6.38-10-generic/updates/net/wireless/cfg80211.ko
  insmod /lib/modules/2.6.38-10-generic/updates/net/mac80211/mac80211.ko
  insmod /lib/modules/2.6.38-10-generic/updates/drivers/net/wireless/rtl818x/rtl8187/rtl8187.ko

  laptop:~$ sudo lsusb -d 0bda:8187
  Bus 001 Device 004: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-10-generic 2.6.38-10.44
  ProcVersionSignature: Ubuntu 2.6.38-10.44-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mike       2412 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfcb00000 irq 43'
     Mixer name	: 'Realtek ALC269'
     Components	: 'HDA:10ec0269,144dc06a,00100004'
     Controls      : 13
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xddefc000 irq 16'
     Mixer name	: 'Nvidia GPU 0b HDMI/DP'
     Components	: 'HDA:10de000b,10de0101,00100100'
     Controls      : 16
     Simple ctrls  : 4
  Date: Tue Jun 28 13:24:48 2011
  HibernationDevice: RESUME=UUID=339679fe-6015-48a0-b9f5-9bdecde05562
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110405)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. R530/R730/P530
  ProcEnviron:
   LANGUAGE=ru_RU:en
   PATH=(custom, no user)
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic root=UUID=eae27d1a-6cca-45bb-8c38-d8cdd238b079 ro quiet splash nomodeset video=uvesafb:mode_option=1377x768-24,mtrr=3,scroll=ywrap vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-10-generic N/A
   linux-backports-modules-2.6.38-10-generic  N/A
   linux-firmware                             1.52.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to natty on 2011-05-04 (54 days ago)
  dmi.bios.date: 06/21/2010
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 04KQ.M007.20100621.KSJ
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: R530/R730/P530
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04KQ.M007.20100621.KSJ:bd06/21/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730/P530:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730/P530:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
  dmi.product.name: R530/R730/P530
  dmi.product.version: Not Applicable
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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