Running on battery power disables WiFi

[John Muir]

On a new laptop (Lenovo N581) and the latest Ubuntu 64-bit the WiFi connection stops working when the power supply is disconnected and the machine is running on its battery. The connection is still active, but no TCP packet is exchanged with the WiFi network.

Downgrading pm-utils to 1.3.0-1 solves the problem. If I allow the automatic update to the current version 1.4.1-9 the problem returns.

uname -a
Linux LTJohn 3.5.0-27-generic #46-Ubuntu SMP Mon Mar 25 19:58:17 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal

[Serge Hallyn (serge-hallyn)]

Thanks for reporting this bug. Can you post any interesting output lines from /var/log/syslog, /var/log/kern.log, or /var/log/pm*?

[John Muir (john-muir)]

Hello Serge,

Please cancel this bug report. I am currently using the version 1.4.1-12
from the Ubuntu automatic updates and the problem seems to have been
resolved (somewhere...). I think the main problem is that the Broadcom
driver is not the best.

Thanks for the help!

John

On 06/03/14 04:01, Serge Hallyn wrote:
> Thanks for reporting this bug. Can you post any interesting output
> lines from /var/log/syslog, /var/log/kern.log, or /var/log/pm*?
>
> ** Changed in: pm-utils (Ubuntu)
> Importance: Undecided => Medium
>
> ** Changed in: pm-utils (Ubuntu)
> Status: New => Incomplete
>

[Launchpad Janitor (janitor)]

[Expired for pm-utils (Ubuntu) because there has been no activity for 60 days.]