Comment 75 for bug 279102

I have a Dell Inspiron 6400 running Kubuntu 10.04LTS with wicd to manage networks.

lspci gives
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)

The network was stable with karmic, and keeps on disconnecting with lucid.

May 7 20:12:40 etienne-laptop kernel: [ 6070.982114] b44: eth0: powering down PHY
May 7 20:12:40 etienne-laptop kernel: [ 6071.000114] b44: eth0: Link is down.
May 7 20:12:42 etienne-laptop kernel: [ 6072.745265] b44: eth0: powering down PHY
May 7 20:12:45 etienne-laptop kernel: [ 6075.989196] b44: eth0: Link is up at 100 Mbps, full duplex.
May 7 20:12:45 etienne-laptop kernel: [ 6075.989200] b44: eth0: Flow control is off for TX and off for RX.
May 7 20:12:45 etienne-laptop kernel: [ 6076.192229] b44: eth0: powering down PHY
May 7 20:12:48 etienne-laptop kernel: [ 6078.989190] b44: eth0: Link is up at 100 Mbps, full duplex.
May 7 20:12:48 etienne-laptop kernel: [ 6078.989196] b44: eth0: Flow control is off for TX and off for RX.
May 7 20:12:49 etienne-laptop kernel: [ 6079.368242] b44: eth0: powering down PHY
May 7 20:12:52 etienne-laptop kernel: [ 6083.000232] b44: eth0: Link is up at 100 Mbps, full duplex.
May 7 20:12:52 etienne-laptop kernel: [ 6083.000238] b44: eth0: Flow control is off for TX and off for RX.

I switched back to kernel 2.6.32-21-generic from 2.6.32-22-generic and it is stable again...

So there must be a bug in the b44 module inside 2.6.32-22-generic as not in 2.6.32-21-generic.