Hi,
thank you for your quick answer.
Larry Finger schrieb:
Tobias Schlemmer wrote:
Interestingly iwconfig always reports TX power of 20dBm, regardless of
the actual tx power, but always a TX rate of 1M. Setting the latter to a
higher value results in packet loss.
Where are you located? Your log says you are using the EU regulatory
domain; however, that is no longer valid. You should add a line like
options cfg80211 ieee80211_regdom=XX
to /etc/modprobe.conf.local. From your name, I would guess the XX
should be DE.
I guess, too. For some reason it is not corrected in some tutorials.
It is likely that the 20 dBm is set by mac80211 as the maximum allowed
by your local regulations. That value is in fact correct for most
locations in the EU.
As far as I know, Germany has a maximum of 100mW, which should be 20dBm,
if I'm right. This means the driver reports full power though the device
actually seems to send with much less power. The power gets lost
somewhere between this display and the antenna. Since there exists a
working driver, I can hardly expect it on the hardware side.
I've attached the output of iwconfig for the two drivers. The
proprietary works, the compat-wireless one even failed to authenticate
(auth timeout) today. I don't know which tx power the proprietary driver
uses. If you can tell me how to find out, I'll try that.
Some additional information: The automatic rate setting seems to work
somehow. Last night it grow to 11M for a short time (reporting signal
stregth of -3dBm).
Maybe, the tx power gets only reduced, but never increased. That's what
the AP sees.
My rtl8187b runs at a full 54 Mbs and operates at at least 15 m from
my AP. I don't run AP firmware that lets me see the signal strength
from the STA.
That dosn't surprise me. The archives don't talk about similar problems.
Tobias
wlan0 802.11b/g linked ESSID:"Malter"
Mode:Managed Channel=8 Access Point: 00:17:3F:7E:AB:08
Bit Rate=48 Mb/s
Retry:on Fragment thr:off
Link Quality=72/100 Signal level=-45 dBm Noise level=-102 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
filename: /lib/modules/2.6.24-19-generic/kernel/drivers/nb/r8187.ko
description: Linux driver for Realtek RTL8187 WiFi cards
author: Andrea Merello <andreamrl@xxxxxxxxxx>
version: V 1.1
license: GPL
srcversion: CE57E03B376EA9ED408E23E
alias: usb:v0846p6A00d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0846p6100d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8189d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8187d*dc*dsc*dp*ic*isc*ip*
depends: usbcore
vermagic: 2.6.24-19-generic SMP mod_unload 586
parm: ifname:charp
parm: devname: Net interface name, wlan%d=default
parm: channels: Channel bitmask for specific locales. NYI (int)
filename: /lib/modules/2.6.24-19-generic/kernel/drivers/nb/r8187msh.ko
description: Linux extension module for Realtek RTL8187 WiFi cards
author: Stanley Chang <changsl@xxxxxxxxxxxxxx>
version: V 11sD1.0
license: Proprietary
srcversion: 4F5B438A81B73DDF03155C5
depends:
vermagic: 2.6.24-19-generic SMP mod_unload 586
wlan0 IEEE 802.11bg ESSID:"Malter"
Mode:Managed Frequency:2.447 GHz Access Point: 00:17:3F:7E:AB:08
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=69/70 Signal level=-41 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
filename: /lib/modules/2.6.28-15-generic/updates/drivers/net/wireless/rtl818x/rtl8187.ko
license: GPL
description: RTL8187/RTL8187B USB wireless driver
author: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
author: Hin-Tak Leung <htl10@xxxxxxxxxxxxxxxxxxxxx>
author: Herton Ronaldo Krzesinski <herton@xxxxxxxxxxxxxxx>
author: Andrea Merello <andreamrl@xxxxxxxxxx>
author: Michael Wu <flamingice@xxxxxxxxxxxx>
srcversion: ACC7FDA7EFE2500D0DC1B50
alias: usb:v1737p0073d*dc*dsc*dp*ic*isc*ip*
alias: usb:v1B75p8187d*dc*dsc*dp*ic*isc*ip*
alias: usb:v18E8p6232d*dc*dsc*dp*ic*isc*ip*
alias: usb:v13D1pABE6d*dc*dsc*dp*ic*isc*ip*
alias: usb:v1371p9401d*dc*dsc*dp*ic*isc*ip*
alias: usb:v114Bp0150d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0DF6p0028d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0DF6p000Dd*dc*dsc*dp*ic*isc*ip*
alias: usb:v03F0pCA02d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0846p4260d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0846p6A00d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0846p6100d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0789p010Cd*dc*dsc*dp*ic*isc*ip*
alias: usb:v0769p11F2d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8198d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8197d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8189d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0BDAp8187d*dc*dsc*dp*ic*isc*ip*
alias: usb:v050Dp705Ed*dc*dsc*dp*ic*isc*ip*
alias: usb:v0B05p171Dd*dc*dsc*dp*ic*isc*ip*
depends: mac80211,eeprom_93cx6,cfg80211
vermagic: 2.6.28-15-generic SMP mod_unload modversions 586
