Hi,
I've installed boinc-client on my Ubuntu 12.04. I've already attached project by boinccmd --project_attach, but when I run boinc it seems to be running but nothing happens.
boinccmd --get_state gives

======== Projects ========
1) -----------
name: World Community Grid
master URL: http://www.worldcommunitygrid.org/
user_name: myname
team_name: Ripple Labs
resource share: 100.000000
user_total_credit: 0.000000
user_expavg_credit: 0.000000
host_total_credit: 0.000000
host_expavg_credit: 0.000000
nrpc_failures: 0
master_fetch_failures: 0
master fetch pending: no
scheduler RPC pending: no
trickle upload pending: no
attached via Account Manager: no
ended: no
suspended via GUI: no
don't request more work: no
disk usage: 0.000000
last RPC: 0.000000
project files downloaded: 0.000000
GUI URL:
name: Research Overview
description: Learn about the projects hosted at World Community Grid
URL: http://www.worldcommunitygrid.org/research/viewAllProjects.do
GUI URL:
name: News and Updates
description: The latest information about World Community Grid and its research projects
URL: http://www.worldcommunitygrid.org/about_us/displayNews.do
GUI URL:
name: My Grid
description: Your statistics and settings
URL: http://www.worldcommunitygrid.org/ms/viewMyMemberPage.do
GUI URL:
name: Results Status
description: View the status of your assigned work
URL: http://www.worldcommunitygrid.org/ms/viewBoincResults.do
GUI URL:
name: Device Profiles
description: Update your device settings
URL: http://www.worldcommunitygrid.org/ms/device/viewProfiles.do
GUI URL:
name: Forums
description: Visit the World Community Grid forums
URL: http://www.worldcommunitygrid.org/forumLogin.do
GUI URL:
name: Help
description: Search for help in our help system
URL: http://www.worldcommunitygrid.org/help/viewHelp.do

======== Applications ========
1) -----------
name: mcm1
Project: World Community Grid

======== Application versions ========
1) -----------
application: mcm1
version: 7.29
project: World Community Grid

======== Workunits ========
1) -----------
name: MCM1_0003103_6543
FP estimate: 65258212768288.000000
FP bound: 32629106384144000.000000
memory bound: 419430400.000000
disk bound: 524288000.000000

======== Tasks ========
1) -----------
name: MCM1_0003103_6543_0
WU name: MCM1_0003103_6543
project URL: http://www.worldcommunitygrid.org/
report deadline: Tue Mar 25 03:08:50 2014
ready to report: no
got server ack: no
final CPU time: 0.000000
state: 2
scheduler state: 0
exit_status: 0
signal: 0
suspended via GUI: no
active_task_state: 0
app version num: 0
checkpoint CPU time: 0.000000
current CPU time: 0.000000
fraction done: 0.000000
swap size: 0.000000
working set size: 0.000000
estimated CPU time remaining: 110850.912320

and service boinc-client status gives

* Status of BOINC core client: running
* Scheduling of BOINC core client: 3682
pid 3682's current scheduling policy: SCHED_OTHER
pid 3682's current scheduling priority: 0
* OOM killer status for BOINC core client:
PID 3682: adj 0
, score
1

I've tried restart service and computer several times but it doesn't solved the problem. Can somebody help me with this?

Restart client, run boinccmd --get_messages and post it's output. You'll also find the same messages in stdoutdae.txt in BOINC's data directory (/var/lib/boinc-client).

If you didn't know, if you install boinc-manager package you'll get a GUI to control the client.

Thank you so much for your response. There was a message
Suspending computation - on batteries
everything started to work when I connected my laptop to the charge.