John Edwards photos under Attribution Creative Commons license

Anyone looking for a photo of John Edwards for use under the Attribution Creative Commons license?

Here are some that I took during the 2004 & 2008 election cycle in NH:

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For proper attribution, please use something like this:

Photo by Marc Nozell and a link to the specific photo used (eg: http://www.flickr.com/photos/marcn/1236008586)

Ubuntu/natty hangs when wifi enabled

This evening I upgraded my hp2133 notebook from Ubuntu/Maverick to the new Natty. The upgrade went smoothly but now the system hangs about 2 minutes after Broadcom 4311 802.11a/b/g wifi is enabled.

Here is the bug report: BCM4311 wifi hangs hp2133 notebook after 2 minutes

Some suggestions from IRC are to try the bcmwl-kernel-source or linux-backports-modules-net-natty-generic packages.

DreamPlug: misc info

Someone asked for more info about the hw/sw as shipped with the DreamPlug:

root@morpheus:~# uname -a
Linux morpheus 2.6.33.6 #1 PREEMPT Tue Feb 8 03:18:41 EST 2011 armv5tel GNU/Linux
root@morpheus:~# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 9.04
Release:	9.04
Codename:	jaunty
root@morpheus:~# lshw
morpheus                  
    description: Computer
    width: 32 bits
  *-core
       description: Motherboard
       physical id: 0
     *-memory
          description: System memory
          physical id: 0
          size: 501MiB
     *-cpu
          physical id: 1
          bus info: cpu@0
     *-scsi
          physical id: 2
          bus info: usb@1:1.1
          logical name: scsi0
          capabilities: emulated
        *-disk:0
             description: SCSI Disk
             product: STORAGE DEVICE
             vendor: Generic
             physical id: 0.0.0
             bus info: scsi@0:0.0.0
             logical name: /dev/sda
             version: 9910
             size: 1886MiB (1977MB)
             capabilities: removable
           *-medium
                physical id: 0
                logical name: /dev/sda
                size: 1886MiB (1977MB)
                capabilities: partitioned partitioned:dos
              *-volume:0
                   description: Windows FAT volume
                   vendor: mkdosfs
                   physical id: 1
                   logical name: /dev/sda1
                   version: FAT16
                   serial: 020d-9082
                   size: 1885MiB
                   capabilities: primary fat initialized
                   configuration: FATs=2 filesystem=fat label=dream_kr
              *-volume:1
                   description: EXT3 volume
                   vendor: Linux
                   physical id: 2
                   logical name: /dev/sda2
                   version: 1.0
                   serial: cc90c161-81e2-4434-b39f-e61c8de21c6a
                   size: 1783MiB
                   capacity: 1783MiB
                   capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized
                   configuration: created=2011-02-23 08:07:06 filesystem=ext3 label=dream_fs modified=2011-04-19 15:44:26 mounted=2011-04-19 15:44:26 state=clean
        *-disk:1
             description: SCSI Disk
             product: STORAGE DEVICE
             vendor: Generic
             physical id: 0.0.1
             bus info: scsi@0:0.0.1
             logical name: /dev/sdb
             version: 9910
             capabilities: removable
           *-medium
                physical id: 0
                logical name: /dev/sdb
  *-network:0
       description: Ethernet interface
       physical id: 1
       logical name: eth0
       serial: f0:ad:4e:00:71:ec
       size: 10MB/s
       capacity: 1GB/s
       capabilities: ethernet physical tp aui bnc mii fibre 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=mv643xx_eth driverversion=1.4 duplex=half firmware=N/A link=no multicast=yes port=MII speed=10MB/s
  *-network:1
       description: Ethernet interface
       physical id: 2
       logical name: eth1
       serial: f0:ad:4e:00:71:ed
       size: 100MB/s
       capacity: 1GB/s
       capabilities: ethernet physical tp aui bnc mii fibre 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=mv643xx_eth driverversion=1.4 duplex=full firmware=N/A ip=192.168.1.231 link=yes multicast=yes port=MII speed=100MB/s
  *-network:2
       description: Ethernet interface
       physical id: 3
       logical name: uap0
       serial: 00:24:23:33:eb:4c
       capabilities: ethernet physical
       configuration: broadcast=yes ip=192.168.3.1 multicast=yes
  *-network:3 DISABLED
       description: Ethernet interface
       physical id: 4
       logical name: pan0
       serial: 92:53:b4:db:b1:5b
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes

DreamPlug: Idles 7-8 watts

I borrowed the a Kill-A-Watt device from the local library and plugged the DreamPlug into it.

Here are my unscientific observations.

• idle with no devices except a NIC, wifi, bluetooth: 7 to 8 watts


• idle with no devices except a NIC: 7 to 8 watts -- that was unexpected


• CPU at ~80% scp'ing a large file to internal disk: 9 watts


• CPU at ~80% scp'ing a large file to external, powered eSATA disk: 9 watts


• idle with external unpowered 320G 'laptop' USB disk: 11 watts

Powertop didn't have much in the way of suggestions that affected power.

DreamPlug: no support for nfs-kernel-server

The folks on reddit were asking about NFS performance on the DreamPlug so I installed nfs-kernel-server. Unfortunately the Ubuntu kernel shipped with the DreamPlug doesn't support NFS:


root@morpheus:~# /etc/init.d/nfs-kernel-server restart
* Stopping NFS kernel daemon [ OK ]
* Unexporting directories for NFS kernel daemon... [ OK ]
* Not starting NFS kernel daemon: no support in current kernel.
root@morpheus:~#


So if you want to use NFS (and don't want to rebuild the kernel), you'll have to use unfs3, a usermode version of NFS. It doesn't support file locking nor wildcards for hostnames in /etc/export.

DreamPlug: motion activated webcam

The webcam tool 'motion' is pretty nice, but it needs some tweaks to the base Ubuntu/Jaunty running the DreamPlug.

Do this:

• Enable the motion daemon. sudo emacs /etc/default/motion and set start_motion_daemon=yes


• Allow for non-localhost access to the web interfaces. sudo emacs /etc/motion/motion.conf and change the lines to match: webcam_localhost off and control_localhost off


• Create the default directory to hold the jpg and swf files. sudo mkdir /tmp/motion && sudo chown motion.motion /tmp/motion


• Restart the motion daemon. sudo /etc/init.d/motion restart


• Fire up a browser and point it to the DreamPlug's port 8080 (say http://morpheus.local:8080) and then follow the link to config then list. From there you'll probably need to set auto_brightness to on.


• Now look at the video on port 8081 (say http://morpheus.local:8081)

After a while of it running, you don't need the browser to be on the page, take a look in /tmp/motion to find all the JPG images and SWF 'movie' files. Eventually I'll probably change the directory to live on one of the USB disks...

My PlugComputer datacenter

My PlugComputer datacenter, originally uploaded by marcn.