Networking hangs

[Hal Murray]

> Which laptop model?

Early B3 board in a B2 case.

> When the symptom is happening, check to see if the USB enumeration has
> changed ... I use lsusb grabbed from another system, but there's also
> something in /proc perhaps.  The kernel logs should also mention
> changes to the USB device list. 

I don't see any changes.

bash-3.2# /sbin/lsusb
Bus 001 Device 003: ID 13b1:0018 Linksys USB200M 10/100 Ethernet Adapter
Bus 001 Device 002: ID 1286:2001
Bus 001 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
bash-3.2#

/var/log/messages says:

Nov 25 16:09:29 localhost ntpd[1439]: kernel time sync status change 0001
Nov 25 16:26:39 localhost dhclient: DHCPREQUEST on eth1 to 192.168.1.1 port 67
Nov 25 16:27:21 localhost last message repeated 4 times
Nov 25 16:28:26 localhost last message repeated 4 times
Nov 25 16:29:29 localhost last message repeated 5 times
Nov 25 16:29:44 localhost dhclient: DHCPREQUEST on eth1 to 192.168.1.1 port 67
Nov 25 16:29:52 localhost kernel: [ 1811.351556] NETDEV WATCHDOG: eth1: 
transmit timed out
Nov 25 16:29:59 localhost dhclient: DHCPREQUEST on eth1 to 192.168.1.1 port 67
Nov 25 16:30:34 localhost last message repeated 4 times
Nov 25 16:31:45 localhost last message repeated 5 times
Nov 25 16:32:55 localhost last message repeated 5 times
Nov 25 16:33:42 localhost last message repeated 4 times
Nov 25 16:33:47 localhost kernel: [ 2046.280787] NETDEV WATCHDOG: eth1: 
transmit timed out
Nov 25 16:33:54 localhost dhclient: DHCPREQUEST on eth1 to 192.168.1.1 port 67
Nov 25 16:34:43 localhost last message repeated 3 times
Nov 25 16:35:48 localhost last message repeated 5 times

I read that as "something is broken", but not much help in pointing the 
finger anyplace.


> Which kernel driver is being used for the USB ethernet?

[murray at xo-02-33-FF ~]$ /sbin/lsmod
Module                  Size  Used by
i2c_dev                 7268  0
mousedev               11192  0
asix                   16320  0
usbnet                 18120  1 asix
mii                     5056  2 asix,usbnet
usb8xxx                17988  0
libertas              183228  1 usb8xxx
ieee80211              32232  1 libertas
ieee80211_crypt         5664  1 ieee80211
psmouse                22636  0
serio_raw               6628  0
cs5535_gpio             4740  0
[murray at xo-02-33-FF ~]$


> I suspect it has lost ability to talk to the device.  Has the laptop
> gone into suspend at all since boot? 

Not that I know of.  I haven't run any activities or poked the power button.

The LEDs on the USB Ethernet dongle are still on.

It often keeps working long after the display gets turned off.



> This sounds like http://dev.laptop.org/ticket/4470

Maybe but it doesn't look like a good fit to me.

That bug happened on 622 (and earlier).  I didn't see it with 623.  It could 
have been there, but if so, it happens much much less frequently.

My case might depend on which of my neighbors has their WiFi turned on.



-- 
These are my opinions, not necessarily my employer's.  I hate spam.