Posts Tagged ‘linux’
Tuesday, April 19th, 2011
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
Tags: dreamplug, linux, lsb, lshw, ubuntu
Posted in DreamPlug, linux | 2 Comments »
Monday, April 18th, 2011
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.
Tags: dreamplug, linux, power
Posted in DreamPlug, linux | No Comments »
Wednesday, April 13th, 2011
My Dreamplug from Globalscale Technologies finally arrived yesterday and I’m just getting around to dig into it.
Things I’ve noticed:
- Shipped with Ubuntu/Jaunty preinstalled. Root password: nosoup4u
- kernel:
Linux ubuntu 2.6.33.6 #1 PREEMPT Tue Feb 8 03:18:41 EST
2011 armv5tel GNU/Linux
- Misc system info: /proc/meminfo,/proc/cpuinfo, dmesg and lsmod
- Only port open is ssh
- The dreamplug starts up as an open wifi access point that will route through either eth0 of the wired network or a ppp0 device. It is named DreamPlug-uAP-{last two octects of the uap0 MAC address} ie: DreamPlug-uAP-eb4c
- /etc/rc.local runs a script in ~root/init_setup.sh(!) It sets up the wifi as an access point, configures iptables for ip masquerade/ip forwarding, enables bluetooth and plays with the LED light brightness. See: init_setup.sh
- They didn’t clean up .history — lots of interesting stuff in there! Grab a copy before you do any commands as root. I lost the first 34 commands and curious what else they were doing. See: history.txt
-
Some commands they used and places to check for changes from default values:
– uaputl sys_config
– cp -rf /mnt/uaputl /usr/bin/uaputl
– vi /sbin/wlan.sh
– vi /etc/usbmount/usbmount.conf
– mocp /media/usb1/EyesOnMe.mp3 (someone’s favorite song, it gets played a number of times)
– vi /etc/modprobe.d/blacklist-framebuffer.conf
– vi /etc/modprobe.d/alsa-base.conf
– cat /proc/asound/card0/codec
– cat /proc/asound/card0/usbbus
– cat /proc/asound/card0/usbid
– cat /proc/asound/card0/pcm0p/info
– vi /etc/ld.so.conf.d/libasound2.conf
– vi /etc/java-6-openjdk/sound.properties
– speaker-test
– vi /etc/mke2fs.conf +5
– vi /etc/asound.conf
– arecord -f dat -D hw:3,0 -d 30 foo.wav
– arecord -f dat -D hw:0 -d 30 foo.wav
– arecord -f dat -D hw:1,0 -d 30 foo.wav
– cat /proc/asound/cards
– arecord -l
– vi /etc/asound.conf
– mocp BuzzingBee.wav
– mv /etc/asound.conf /etc/asound1.conf
– vi /etc/modprobe.conf
– sudo apt-get install snd_pcm_dmix
– vi /etc/asound1.conf
– cp -rf /etc/asound1.conf /etc/asound.conf
– play /home/havana.wav
– vi /etc/udhcpd.conf
- There are two kernel modules (mcypt.ko & sd8xxx.ko) sitting in ~root/ On how to use them (not that I’ve tried yet), try here on openplug.org. See: mcypt.ko and sd8xxx.ko
- Packages installed by default: dpkg.txt
- Things to do:
– apt-get update && apt-get upgrade (carefully don’t trash possibly changed config files)
– install emacs (sudo apt-get install emacs)
– change password
– create user accounts
– add users to sudousers (visudo)
– install ssh keys (ssh-copy-id user@ubuntu.local)
– change the hostname from ubuntu.local to morpheus.local (to go with my SheevaPlug named lordshiva.local) (edit /etc/hostname and /etc/hosts)
– play with USB webcam & motion
– setup ftp/nfs for local file sharing
– carefully consider upgrading to more recent versions
– look at using as a wifi client
– try pairing bluetooth headset
– try pairing android phone — file transfers? remote control?
– install cups
– install gnump3d (needs make)
– install munin to monitor performance (is this going to kill my
internal sd storage?)
14-Apr 10:50am Update: DreamPlug discussion on reddit submitted by sub2k1
Tags: ARM, dreamplug, linux, ubuntu
Posted in DreamPlug, General, linux, SheevaPlug | 7 Comments »
Tuesday, March 9th, 2010
The sshguard documentation is correct, but a little lacking.
Here are my notes of what is needed in case I ever need to re-do it:
- Download sshguard-1.4.tar.gz from http://www.sshguard.net/
- Unpack and compile (see the stock documentation on sshguard.net)
- In /etc/rc.local add the following lines before the “exit 0″. This sets up iptables with a filter for ssh connections:
iptables -N sshguard
iptables -A INPUT -p tcp --dport 22 -j sshguard
You should run those commands before you edit the syslog configuration. Or reboot.
-
In /etc/syslog-ng/syslog-ng.conf add around line 190 the following lines:
filter sshlogs { facility(auth, authpriv) and not match("sshguard"); };
destination sshguardproc {
program("/usr/local/sbin/sshguard"
template("$DATE $FULLHOST $MESSAGE\n"));
};
And down near the end of the file, add:
log { source(s_all); filter(sshlogs); destination(sshguardproc); };
And finally restart syslog-ng (sudo killall -HUP syslog-ng) and read the sshguard faqs: http://www.sshguard.net/docs/faqs/
Tags: linux, sheevaplug, ssh, sshguard
Posted in linux | No Comments »
Tuesday, February 16th, 2010
Tonight I wiped my hp2133 running Ubuntu/karmic and installed lucid.
The only pain was of course getting the wireless card to work. That simply meant getting the Broadcom firmware into /lib/firmware/b43
The instructutions on http://wireless.kernel.org/en/users/Drivers/b43 were right on. You will need to build b43-fwcutter from source pulled from the git repo, but the commands are provided.
Tags: b43, hp2133, linux, ubuntu, wireless
Posted in hp 2133, linux | 2 Comments »
Monday, January 4th, 2010
If so, then you *need* to get a Droid.
I think of the Motorola Droid as an “always on portable computer with G3, WiFi, GPS, Blutetooth, audio in/out, microSD, compass, accelerometer, keyboard and a reasonable size touch screen.” Oh, and you can make phone call with it too.
The open source dev tools for Linux/Windows/Mac integrate with eclipse and includes the can’t-say-Java-but-that-is-what-it-is compiler & runtime. Nice desktop phone emulator for debugging and on the phone there is a reasonable USB-based debugging tool. It was straight forward to compile some of the sample projects and put it on my phone.
Tags: droid, Java, linux
Posted in android, Java, linux | No Comments »
Friday, June 20th, 2008
Last night I gave my much delayed talk about MySQL at the Greater New Hampshire Linux Users Group.
BTW, next time you are in downtown Nashua, stop by Martha’s Exchange and have a Cherry beer with the Jambalaya — spicy but delicious!
Tags: gnhlug, linux, MySQL, Nashua, nh, Presentation
Posted in linux, nh | No Comments »
Wednesday, May 21st, 2008
Last month I ordered an hp 2133 mini-note with pre-installed Linux, specifically Novell’s SuSE Linux Enterprise Desktop 10 and it was back ordered until last week.
Here are the obligatory unboxing photos.
Man it is tiny, but after a few hours of getting use to it, it isn’t *too* small for typing. I’m getting to like the button under the space bar that disables the touchpad for when you are doing extended typing.
See the rest of the photos here:
HP 2133 mininote unboxing
I’ll be blogging more about this nice hardware as I explore it — hw specs, restore CDs, installing Ubuntu/Hardy and Fedora 9, and any little hints along the way.
Full Disclosure: While I do work for HP, it is not in any PC/notebook related area, although I do use Linux (RHEL4, OEL) on ProLiant servers on a daily basis. Also this a personal purchase for home use. I didn’t even get an employee discount!
Tags: hp 2133, linux, mininote, My Photos, SLED10
Posted in hp 2133, linux, photos | No Comments »
