28 October 2012

Upgrade from Xubuntu 10.04 LTS to 12.04 LTS

Here are the couple things that I found that I had to fix when upgrading from Xubuntu 10.04 LTS to 12.04 LTS:

  1. I was not getting DNS resolution
    • sudo vi /etc/resolv.conf
    • add:
    • UPDATE: the above does not last you should instead:
      • sudo vi /etc/network/interfaces
      • add:
  2. My VNC session was not loading a window manage (giving a failure to load gnome message -- I also got a trash not supported error and application crashes when starting xfce4-session)
    • vi ~/.vnc/xstartup
    • make sure it has:
      startxfce4 &
  3. When running synaptic from the application menu, it would ask for a password then fail to load 
    • xhost +localhost
  4. noip2 was removed and not in the package list
    • cd /usr/local/src
    • sudo wget http://www.no-ip.com/client/linux/noip-duc-linux.tar.gz
    • sudo tar xf noip-duc-linux.tar.gz
    • cd noip2-2.1.9-1/
    • sudo make install
    • sudo /usr/local/bin/noip2 -C
    • sudo vi /etc/init.d/noip2
      • change:
    • sudo /etc/init.d/noip2 start

27 October 2012

Creating/Mounting/Burning ISOs in Linux

Creating an ISO:

  1. First make sure everything using the cd/dvd drive is closed
  2. Unmount the cd/dvd drive:
    • sudo umount /dev/dvd1
  3. Create the copy:
    • readom dev=/dev/dvd1 f=disk1.iso
  4. Verify the copy:
    • md5sum /dev/dvd1
    • md5sum disk1.iso
If you are getting read errors, you can use safecopy:
  • safecopy /dev/dvd1 disk1.iso

Mounting an ISO:

  • sudo mount -o loop -t iso9660 disk1.iso /mnt/iso

Burning an ISO:

  • wodim dev=/dev/cdrw -v -data disk1.iso

01 October 2012

Toshiba L875D-S7232 Review

Here are my thoughts on my newly purchased laptop, a Toshiba L875D-S7232. Overall I am very happy with my purchase, but will definitely be looking to upgrade to a SSD at some point.

  • 17.3" 1600x900 screen
  • A8-4500M Processor
  • 6GB of 1600MHz RAM
  • HD 7640G Graphics (defaults to 512MB use)
  • The Silver and Black color makes the laptop look professional
  • Good Windows Experience Index Scores (scale 1.0 to 7.9):
    • Processor: 6.7
    • Memory: 7.0 (out of the box; 7.2 after updates)
    • Graphics: 6.7
    • Gaming Graphics: 6.7
    • Hard Disk: 5.9
  • 3DMark 06: 4693
  • Price: $479.99 + tax at Staples
  • Boot Time is 2-3 minutes including login and browser launch

  • No Hard Drive Activity LED (I replaced with a software one: http://sourceforge.net/projects/activityindicat/ )
  • The shiny black plastic surrounding and under the keyboard shows dirt and fingerprints easily
  • Norton 30 day trial - I uninstalled and replaced with Avast Free Home - http://www.avast.com/en-us/index
  • Power Plug does not have a separate ground 
  • No Spot for a second hard drive
  • It appears that video driver updates must come thru Toshiba instead of AMD, but this seems to be common with notebook APUs

Other Thoughts:
  • Toshiba Software Update Page
  • Island Keyboard may take some getting used to
  • Function keys (F1-F12) default to their function use (change screen brightness/volume etc.)
    • Was able to change this behavior thru the pre-installed Toshiba HWSETUP Utility
  • Comes with Office Starter (ad supported Word and Excel)
  • On Med/High settings at 1600x900 I get between 40 and 60 FPS (capped by vsync) in DDO
  • On High settings at 1600x900 in Battlefield Play 4 Free I get ~30FPS
  • Side exhaust does get quite warm
  • Battery Life seems to be around 2.5-3 hours

Update 2016-07-06:
  • Toshiba disabled virtualization in the bios. I am disappointed that they did this on a mid-range laptop to try to force more high end laptop sales.