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Thread: rtl8187 overheating and injection

  1. #1
    Join Date
    Jun 2008

    Default rtl8187 overheating and injection

    hi i am using a edimax that have a Realtek rtl8187

    i use airdriver-ng loaded i find :
    Found following stacks loaded (as module):
    2. mac80211
    Found following drivers loaded (as module):
    36. Realtek rtl8187 - mac80211

    and with lsusb:
    Bus 002 Device 011: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter


    when i use airmon-ng start wlan0

    the first time i use it ,the light of the usb turn ON.
    i test the injection with aireplay-ng -9 mon0
    (i have 2 routers and i test my injection)

    aireplay-ng -9 mon0
    For information, no action required: Using gettimeofday() instead of /dev/rtc
    17:30:17 Trying broadcast probe requests...
    17:30:17 Injection is working!
    17:30:19 Found 2 APs

    (all that time the green led is all the time on)
    i put : ifconfig mon0 down then ifconfig wlan0 down (and even that the green light is on!!)
    and then i unplug it and i found it very very HOT (overheated)(2-3 minutes).

    my second experience i make the same procedure as before but this time the green led don't turned ON, when i put in monitor mode.
    i haven't try any test for the wep cracking with this chipset

    i am fear that when i put it in monitor mode i crach it (i have a rt73 edimax chipset and i have no problem at all with overheating and lighing(only light on when i inject))!!!
    what should i do ? about the overheating problem ,and the green light ;
    that indicate that i have problem with the usb ??(work fine on windows)

    if not please guide me to a solution .

  2. #2
    Junior Member
    Join Date
    Feb 2010


    I cant help you with your problems as such as I have gone back to the old drivers. But, with regard to the overheating, check what power your 8187 is set to (with iwconfig). With a bog standard install of Ubuntu 8.10 using the stock 80211 drivers, on insertion my 8187 would be set to 27db (full power) - thats without any external aerial plugged in as well. The 8187 chipset is supposed to be designed to only increase its output if the conditions are correct (ie. compatible aerial). I'm just wondering if the power of the 8187 is set stupidly far too high with the BT4 80211 patched drivers as well.

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