Category Archives: hardware

Save energy by spinning down HDDs, Ubuntu 14.04

Especially when using a fast SSD as the main harddisk, it makes sense to spin down a secondary (larger) harddisk which is seldom used.

First of all you have to know which drive is mapped to the /dev directory. E.g. you can use the program gparted to show you the relevant /dev drive.

To spin down a hard disk into standby mode use this command in the terminal application (in this case the drive is “sdb”):

sudo hdparm -y /dev/sdb

To start your computer with the secondary drive in standby mode just add the described command to the file /etc/rc.local.

In that file you can also define an automatic spin down time –  e.g.

hdparm -S 120 /dev/sdb

The parameter 120 is nonlinear, so experiment with the number until it fits your needs.

 

Further Reference

hdparm – Ubuntu manuals

Brother HL3040CN Installation, Ubuntu Linux 14.04, 14.10

  1. sudo mkdir /var/spool/lpd && sudo apt-get install lib32stdc++6
  2. Download the printer driver files LPR printer driver (deb package) and the CUPSwrapper printer driver (deb package) from the Brother website:
    http://support.brother.com/g/b/downloadlist.aspx?c=us&lang=en&prod=hl3040cn_all&os=128
  3. sudo dpkg -i --force-all hl3040cnlpr* && sudo dpkg -i --force-all hl3040cncups*
  4. Switch the printer on. It appears in the printers overview. However you might have to add a new printer– e.g. as a network printer.
  5. For the new added printer choose Provide PPD file as printer driver. Add the following file: /usr/share/cups/model/Brother/brother_hl3040cn_printer_en.ppd
  6. Optional: Delete the printer without the green check in the printer manager.

Reference: Solved: Brother HL-3040CN Won’t Print
http://ubuntuforums.org/showthread.php?t=1602075&p=10012790#post10012790

Epson Perfection v500 Photo Installation, Ubuntu 12.04

Tested on Ubuntu Linux 12.04 Precise Pangolin (working). (2012-08-02)

  1. Be sure that the scanner is switched off and that the USB cable is disconnected from the pc.
  2. Fill in the survey of the EPSON website http://www.avasys.jp/lx-bin2/linux_e/scan/DL1.do
  3. Download the file iscan-data_1.13.0-1_all.deb
  4. Download the two deb files (32bit or 64bit) package [libltdl7] (for Ubuntu 8.10 or later) – iscan_2 and iscan-plugin.
  5. Install the three files:
    sudo dpkg -i iscan-data*.deb
    sudo dpkg -i iscan_2*.deb
    sudo dpkg -i iscan-plugin*.deb
  6. Connect the USB cable of the scanner with the pc and switch the scanner on.You can now start the scanning applications XSane or Image Scan!

Comment by Peter: (December 2012)
You need all three of these:
iscan-plugin-gt-x770_2.1.2-1_amd64.deb
iscan-data_1.20.0-1_all.deb
iscan_2.29.1-5~usb0.1.ltdl7_amd64.deb
for Precise Pangolin 64bit.