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Date: Wed, 27 May 2009 21:35:20 +0200
From: Barkle <barkle@gmx.net>
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To: Hin-Tak Leung <hintak.leung@gmail.com>
CC: linux-wireless@vger.kernel.org
Subject: Re: RTL 8185
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Hin-Tak Leung schrieb:
> On Wed, May 27, 2009 at 7:09 AM, Barkle <barkle@gmx.net> wrote:
>
>   
>> After "ifconfig wlan0 up" the system freeze
>> It's just every time the interface has to work, it's gonna freeze. It
>> doesn't matter if I use wpa_supplicant or ifupdown (which invokes at last
>> wpa_supplicant, so far as I know, on the debian system)
>>     
>
> Hmm, try to disable any devices on the pci bus which you don't use
> with setpci <id> command=0 before anything els

Have a look at lspci

*********************
feta:~# lspci
00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and 
Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82815 Chipset 
Graphics Controller (CGC) (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801AA PCI Bridge (rev 02)
00:1f.0 ISA bridge: Intel Corporation 82801AA ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801AA IDE Controller (rev 02)
00:1f.2 USB Controller: Intel Corporation 82801AA USB Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801AA SMBus Controller (rev 02)
01:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 
IEEE 802.11a/b/g Wireless LAN Controller (rev 20)
01:09.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] 
(rev 74)
*********************

Wich device do you mean?

I disabled
feta:~# setpci -d 8086:2413 command=0 [the SMBus]
feta:~# setpci -d 8086:2412 command=0 [the USB]
feta:~# setpci -d 8086:2410 command=0 [the ISA bridge]
feta:~# setpci -d 8086:1132 command=0 [the VGA]
feta:~# ifconfig wlan0 up

=> freeze