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#1 2012-12-30 12:15:46

Psirus
Member
Registered: 2012-01-29
Posts: 39

Wireless Problems Lenovo x121e & DLink DI 524

I'm experiencing some rather erratic Wifi behaviour with my laptop. Since there are so many factors involved, I have trouble pinpointing the problem.
My setup is as follows: A Lenovo x121e with Arch installed, and a Realtek RTL8188CE card; a Hitron CVE-30360 cable-modem and a DLink DI-524 router. I've used this How-To from DLink (beware: German Dlink HowTo) to setup the DI-524; in essence: deactivate UPnP, changed IP to 192.168.0.222, turned off DHCP-Server, connect cable modem to LAN port of the DI-524. My desktop, which is connected via cable to the router, connects to the internet just fine.
With my laptop, I want to use the Wifi, obviously. I set the router to use WPA (also tried WPA2, no difference), and then connected with either wifi-menu or wicd-curses. It establishes a connection, yet it is very slow most of the time, and drops packages (up to 10% package loss when pinging the router).
What log files etc. would I look for, I don't really know where to start with this.
Thanks in advance

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#2 2012-12-30 20:16:23

cfr
Member
From: Cymru
Registered: 2011-11-27
Posts: 5,661

Re: Wireless Problems Lenovo x121e & DLink DI 524


How To Ask Questions The Smart Way | Help Vampires

Arch Linux | x86_64 | GPT | EFI boot | grub2 | systemd | LVM2 on LUKS
Lenovo x121e | Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz GenuineIntel | Intel Centrino Wireless-N 1000 | US keyboard with Euro | 320G 7200 RPM Seagate HDD

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#3 2012-12-30 21:08:54

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: Wireless Problems Lenovo x121e & DLink DI 524

Search these forums for the kernel module your card uses.  You apparently have the Thinkpad b/g/n wifi card, which uses the rtl8192ce module.  This is unfortunately one of the poorest functioning "supported" wireless card in Linux that I know of. 

Do that search and you should find some things that might help, but there really is no other solution than changing your wireless card.

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#4 2012-12-31 14:41:02

nomorewindows
Member
Registered: 2010-04-03
Posts: 2,980

Re: Wireless Problems Lenovo x121e & DLink DI 524

Download the firmware for a DI-624 and "upgrade" the router with it.  Make sure you are upgrading over an ethernet link and not a wireless connection.

Last edited by nomorewindows (2012-12-31 14:43:10)


I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

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#5 2013-01-02 21:03:22

Psirus
Member
Registered: 2012-01-29
Posts: 39

Re: Wireless Problems Lenovo x121e & DLink DI 524

Just tried a Linux Mint 14 Live CD, and although not completely stable, it is a lot better, even bearable I'd say. Any idea what would be different?

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#6 2013-04-10 07:12:47

luz1
Member
From: Germany
Registered: 2011-12-14
Posts: 20

Re: Wireless Problems Lenovo x121e & DLink DI 524

Had the same problem here. The source of the probelm is the crappy module rtl8192ce!
I solved the problem by using a intel wireless card now. I bought the intel N6200 and everything is fine now.

But be careful: You have to mount the card in the free pci slot (with a adapter), if you replace the original wifi-card the BIOS will complain and you have to flash a differnt BIOS where the intel card isn't blacklisted.

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