The Unity launcher for Ubuntu 12.04 LTS Precise Pangolin has a bug. When auto hide is enabled, there is a lag when trying to get the panel to show. When working correctly the panel should show when the mouse cursor hits the edge but the bug requires you to move your mouse beyond the edge to get the panel to show. Feels heavy.

There’s no official fix out at the time of this post. Do you?

Currently, the workaround to get the panel working is through a config tweak using the “compizconfig-settings-manager” tool. Here’s how.

1. Download compizconfig-settings-manager tool. Command line or from the app store.

or

danesh@python:~$ sudo apt-get install compizconfig-settings-manager

2. Launch the compizconfig-settings-manager. Go to “Desktop –>  Ubuntu Unity Plugin –> Experimental Tab”.

Change the value for “Launcher Reveal Pressure” to “1″ or what works for you. I have mine set at 10.

Enjoy.

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Oracle JDK is no longer included by default in Ubuntu’s repositories due to licensing. OpenJDK is default now but many apps still don’t play nice with it. This is why I installed Oracle JDK.

I’ll walk you through the process of installing Oracle JDK 7 on Ubuntu 12.04 LTS Precise Pangolin, the easy way. For this we will use the “install oracle-java7-installer” package from “WEBUPD8″.

The “install oracle-java7-installer” package from “WEBUPD8″ will download the official binaries from Oracle and install the JAVA 7 JDK, JRE and browser plugins on your machine.

1. Add the “WEBUPD8″ PPA.

danesh@python:~$sudo add-apt-repository ppa:webupd8team/java 

2. Update your repositories.

danesh@python:~$sudo apt-get update 

3. Install JAVA 7 JDK.

danesh@python:~$sudo apt-get install oracle-java7-installer

To uninstall,

sudo apt-get remove oracle-java7-installer

Did it work for you? Test here

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Had a few documents to scan to PDF urgently today but to my surprise all the cybercafes around my neighborhood didn’t provide scan to PDF service. The best they could do was scan to jpeg. Hmmm…why?

Thanks to Linux I had a solution. Scan the docs to jpeg, then convert the jpegs to PDF using imagemagick. Worked like a charm.

Here’s how, on my Ubuntu 12.04 LTS

Install the imagemagick package if you don’t already have it.

:~$ sudo apt-get install imagemagick

Convert a single file.

:~$ convert scan.jpeg result.pdf

Convert multiple files.

:~$ convert -adjoin scan*.jpeg result.pdf

or

:~$ convert -adjoin scan1.jpeg scan2.jpeg result.pdf

Did it work for you? Do you have an alternative solution?

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Need to grab a screenshot on your Samsung Galaxy Nexus?

Hold down the “power” together with the “volume down ” button for 1 second to grab a screenshot.

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Here’s a quick way to check which version of Solaris you are running.

#cat /etc/release

Solaris 10 11/06 s10x_u3wos_10 X86
Copyright 2006 Sun Microsystems, Inc.
All Rights Reserved.
Use is subject to license terms.
Assembled 14 November 2006

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Here’s how to install it.

Download and compile from source.
#cd /tmp
#wget http://download.savannah.gnu.org/releases/hddtemp/hddtemp-0.3-beta15.tar.bz2
#tar -jxvf hddtemp-0.3-beta15.tar.bz2
#cd hddtemp-0.3-beta15
#./configure
#make
#make install
#cd /usr/share/misc/
#wget http://download.savannah.gnu.org/releases/hddtemp/hddtemp.db

Test it.
#hddtemp /dev/sda
#/dev/sda: WDC WD2500JS-75NCB3 : 45°C

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I mainly use my box.net to hold eBooks for later access on my Laptop and Android devices.

There is no free client for Linux so I use WebDAV instead. It’s slower but it works.

Start by installing davfs2.
# sudo yum install davfs2
Create your Box.net directory
# mkdir ~/Box.net
Create the davfs2 config directory. It’s in your home dir so it’s not system wide.
# mkdir ~/.davfs2
Disable locking. Causes issues sometimes.
# cd ~/.davfs2
# echo "use_locks 0" > davfs2.conf
Create a secret file to hold your box.net login details. Make sure to “chmod 600 the file”
# echo "https://www.box.net/dav [you box.net login] [your box.net password]" > secrets
# chmod 600 secrets
Backup and update your /etc/fstab file to include your box.net directory.
# cp /etc/fstab /etc/fstab.ori
# echo "https://www.box.net/dav /home/danesh/Box.net davfs rw,user,noauto 0 0" >> /etc/fstab
Mount and you should be able to list ~/Box.net
# mount ~/Box.net
# ls -l ~/Box.net

This is the hard way to do this. I will post a simpler method using Nautilus in a future post.

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1. Change to root user
# su -
2. Create the the roboto directory
# cd /usr/share/fonts/
# mkdir roboto
# cd roboto
3. Download the roboto font and install it.
# wget http://www.fontsquirrel.com/fonts/download/roboto -O roboto.zip
# unzip roboto.zip
# rm roboto.zip
# fc-cache /usr/share/fonts/roboto/

Enjoy your new Roboto fonts!

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I’ve been using Google’s Music locker / streaming service for awhile now. You get to upload 20,000 tracks and getting them on is a breeze with Google’s Music Manager. I’m running Fedora 16 now and here’s I got Google Music Manager running on it.

1. Get into your home downloads directory.
# cd ~/Downloads
2. Download the Google Music Manager rpm.
64bit:
# wget http://dl.google.com/linux/direct/google-musicmanager-beta_current_x86_64.rpm
32bit:
# wget http://dl.google.com/linux/direct/google-musicmanager-beta_current_i386.rpm

3. Satisfy the dependencies. Install the qt-x11 package.
# sudo yum install qt-x11
4. Install the Google Music Manager package.
# sudo yum localinstall google-musicmanager-beta_current_x86_64.rpm

Possible error; make sure you have qt-x11 installed.
[danesh@pandora ~]$ google-musicmanager
/usr/bin/google-musicmanager: error while loading shared libraries: libQtGui.so.4: cannot open shared object file: No such file or directory

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/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD2500JS-75NCB3
Serial Number: WD-WCANKF265386
Firmware Revision: 10.02E04
Standards:
Supported: 7 6 5 4
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 488281250
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 238418 MBytes
device size with M = 1000*1000: 250000 MBytes (250 GB)
cache/buffer size = 8192 KBytes
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
Power-Up In Standby feature set
* SET_FEATURES required to spinup after power up
SET_MAX security extension
* Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
Checksum: correct

Hope it comes in handy for you. Know a better way? Please share

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