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syväpaahto

Member

From: Finland

Registered: 2009-04-23

Posts: 15

wifi causes system freezes

Resently I bought two A-Link wifi adapters(zd1211rw). One for my computer and one for wifes computer.

Since then I'we suffered from occasional system freezes when X starts. Right after gdm. Since the freeze is total, I don't have any log entries. But I know it is related to the wireless. Removing it removes the problem.

Can somebody tell me how I could investigate this?

P.S. Wifes wifi works just fine. Shes using Ubuntu 9.04

djszapi

Member

From: Cambridge, United Kingdom

Registered: 2009-06-14

Posts: 1,439

Website

Re: wifi causes system freezes

Hello syväpaahto!

Is it usb or pci based wifi card ? Is there any problem, if you try to boot in init level 3, and then starting manually display managers? Did you try with another dm out of gdm ?

---

http://lpapp.blogspot.com

syväpaahto

Member

From: Finland

Registered: 2009-04-23

Posts: 15

Re: wifi causes system freezes

I finally got around to testing.

Hello syväpaahto!

Is it usb or pci based wifi card ?

USB based

Is there any problem, if you try to boot in init level 3, and then starting manually display managers? Did you try with another dm out of gdm ?

I was unable to reproduce the problem by first booting to init level 3. No crashes

Did you try with another dm out of gdm ?

No and I don't want to. Originally I didn't even want gdm. I was forced to install gdm due to too many permission problems in gnome that I couldn't solve (consolekit).

Last edited by syväpaahto (2009-08-21 12:30:34)

takedown

Member

From: Argentina

Registered: 2008-08-31

Posts: 219

Re: wifi causes system freezes

Same prolem here.
Yesterday I bought a usb Linksys wusb54gc.

When I plug in usb and charge the driver (rt73usb) the system work ok 2 minutes with internet (static ip or dhcp and wpa, only with netcfg) and then the system freezes completely, and I need to do a hard reboot.

[takedown@thinkpad ~]$ lsusb
...
Bus 002 Device 002: ID 13b1:0020 Linksys WUSB54GC 802.11g Adapter [ralink rt73]
...

My netcfg profile:

CONNECTION="wireless"
DESCRIPTION="Home wireless net"

INTERFACE="wlan0"
HOSTNAME=thinkpad

IP="static"
IFOPTS="192.168.1.199 netmask 255.255.255.0 broadcast 192.168.1.255"
GATEWAY="192.168.1.1"

SECURITY="wpa"
ESSID="tkd-lan"
KEY="SomePassHere"

SCAN="YES"
TIMEOUT=15

IWCONFIG="rate 54M mode managed"

PRE_UP="modprobe rt73usb"

After start netcfg tkd-wireless via dmesg I see a lot of:

phy0 -> rt2x00usb_vendor_request: Error - Vendor Request 0x07 failed for offset 0x3090 with error -71.
... (a lot of them) ...
phy0 -> rt2x00usb_vendor_request: Error - Vendor Request 0x07 failed for offset 0x3090 with error -71.
phy0 -> rt2x00usb_regbusy_read: Error - Indirect register access failed: offset=0x00003090, value=0xffff8800

And here is where my system crash.

It a ironic situation, because 1 month ago, I bought a Lenovo thinkpad t500 with a realtek 7182 (in windows realtek 8192se) wireless chipset, without GNU/Linux support, for that reason, yesterday bought the usb dongle.
And again I run out of support.

sorry my horrible english

syväpaahto

Member

From: Finland

Registered: 2009-04-23

Posts: 15

Re: wifi causes system freezes

If I plug in the wifi after gnome has started it usually works just fine. There have been few rare exceptions where system has crashed while starting firefox after succesful connection to my router, but I really haven't been able to reproduce this reliably.

syväpaahto

Member

From: Finland

Registered: 2009-04-23

Posts: 15

Re: wifi causes system freezes

Problem has returned...or never went anywhere. Booting first to init 3 doesn't help. Although when my system crashes on init 3 commandline puts out gibberish before freezing. Something about FAM. It really doesn't mean anything to me.

maby I'll take a snapshot next time:/

takedown

Member

From: Argentina

Registered: 2008-08-31

Posts: 219

Re: wifi causes system freezes

after the connection to the router is done, try to see the output of the command dmesg frecuently.

syväpaahto

Member

From: Finland

Registered: 2009-04-23

Posts: 15

Re: wifi causes system freezes

Heres a snapshot just before freezing

takedown

Member

From: Argentina

Registered: 2008-08-31

Posts: 219

Re: wifi causes system freezes

in some cases i have the same issue