Friday, January 14, 2011

BLM Land Color Key

Everyone who camps a lot probably already knows this, but I had a hard time hunting down the information online.

Yellow - Bureau of Land Management (BLM),
Darker yellow-orange - Wilderness Study Areas within BLM lands
Purple - National Park Service
Green - National Forest
Dark Green - National Forest Wilderness Areas
Blue - state lands
Pink - Bankhead-Jones Land Use Land

Private lands are untinted.

Tuesday, November 9, 2010

Backscatter X-Ray Systems Could Pose Health Risk

Here's an article too important not to share. Last time I was at LAX, I submitted to one of these scans, lacking this rather important information.

I'll always get to the airport a little early and opt for the pat-down now.

http://www.news.com.au/travel/news/pilots-boycott-naked-airport-scanners-over-health-fears/story-e6frfq80-1225947834443

Here's the chewy, tasty part from a health perspective:

“While the dose would be safe if it were distributed throughout the volume of the entire body, the dose to the skin may be dangerously high,” Dr Agard said.

"Ionizing radiation such as the X-rays used in these scanners have the potential to induce chromosome damage, and that can lead to cancer."

David Brenner, the head of Columbia University’s Centre for Radiological Research, says the concentration on the skin – one of the most radiation-sensitive organs of the body – means the radiation dose is actually 20 times higher than the official estimate.

The researcher was consulted to write guidelines for the security scanners in 2002 but said he would not have signed the report had he known the devices were going to be used so widely.

Please make the privacy machines go away.

Wednesday, November 3, 2010

Silk Hazelnut Creamer Review

Product Review: Silk Hazelnut Creamer

=

Silk Hazelnut Creamer tastes and smells like acrylic paint.


Monday, October 4, 2010

Customizing Google's Chromium Browser Using Custom Stylesheets

I finally got fed up with Windows XP, and installed Linux Mint 9 on my HP Mini 210; Mint is a vast improvement, with the exception of the clickpad, which is still a bit wonky in X11.

My biggest issue was configuring Google's Chromium web browser to use larger fonts by default, since the screen of the HP mini is such a high resolution screen. The trick was to edit the following file:

~/.config/chromium/Default/User StyleSheets/Custom.css

The contents of my file is the following:

* {
font-size : 15px ! important;
}

body {
background-image : none ! important;
}

This causes the default font size to be 15 pixels, and all body background images to go away (I hate them).

What's really cool: if you edit this file while Chromium is running, you will immediately see the changes to the default stylesheet whenever you save your changes to the file :-)

Tuesday, September 7, 2010

HP Mini 210 review

A lot of people have asked me about my netbook at school. I've decided to write a blurb about my impressions regarding the HP 210 Mini.

I purchased the HP 210 after performing exhaustive research regarding other options. The biggest selling point (for me) was the availability of a high-resolution screen (1366x768). The larger size of the trackpad is also a big benefit.

This netbook is noticeably faster than my wife's Asus EEE 1000HA, and works surprisingly well for video playback (especially when using VideoLAN client to play flash video files).

HP Customer service has been EXCELLENT, and I cannot say that I have ever had a better experience with customer support from a big-box as an end-user.

However, here are several unfortunate detractors regarding this model.

1. Severe trackpad issues:

Although the trackpad is very large on this model, the click-hold-drag gesture is nearly impossible to perform on this laptop. This device actually has a "click-pad," meaning that the buttons are integrated into the trackpad itself. Want to scroll a scroll bar in a window? You'd better get used to using multi-finger gestures (or configuring the trackpad to have drag areas that correspond to scrolling). Because of this, my wife absolutely *refuses* to use my laptop; hence, two stars on overall rating. IMHO this would be a deal-breaker for many users out there.

Now that I have been using the laptop for a while, I *never* use the "click" of the clickpad. I always tap, because the only way to click-hold-drag is to use tap gestures anyway.

Furthermore, this trackpad doesn't respond well to multi-finger gestures. My wife's ASUS EEE PC 1000HA, with its Elantech trackpad, is EXCELLENT at detecting one, two, or even THREE fingers being pressed on its tiny(!) surface. If you like how you can use two fingers to scroll windows on the Mac laptops, you can forget about it on this HP -- it never works reliably.

2. The screen is *very* high-gloss. This makes it extremely hard to use in my classrooms when the lecture halls' overhead lighting is turned on. I'm considering cutting the plastic screen film with an exacto knife and replacing it with some other protective material. If the screen was as anti-reflective as my wife's ASUS EEE PC 1000HA, I would consider it to have the *perfect* screen.

3. The HPDirect website implied that the wireless card was compatible with 802.11a. This is patently false; the BIOS of this laptop actually restricts the types of wireless cards that can be used in this device, and none of them actually support 802.11a (after 2+ spending hours with tech support on phone). This is why I knocked off a star on the "features" rating.

Hopefully HP listens to this review and offers another mini that addresses the shortcomings. I really think the trackpad/clickpad issue will force customers away from the otherwise excellent HP 210.

Saturday, August 28, 2010

Amazon: Item ratings

Sarah and I have been using Amazon heavily now that we are building our new home together. In particular, we have been relying on the user-supplied ratings when making our purchasing decisions.

Today I was musing about how useful the Amazon ratings are. However, Sarah had a very good insight: "Really, who actually spends time rating all the stuff they buy off of Amazon?"

"Hmmm. People who like to waste time, I suppose."

"Exactly."

Maybe Amazon ratings aren't all that useful...

Tuesday, June 1, 2010

Correct Modelines for Panasonic TC-P42G10

Getting the picture from my Linux media box to be centered and clocked properly on my Panasonic plasma display has been quite challenging. This is because the TC-P42G10 furnishes incorrect EDID data to my computer through the DVI interface (shame on you, Panasonic!) that resulted in an off-center display and a vertical refresh rate ever so close to 60.01 Hz.

Centering the image in the display was not terribly challenging. The big mystery occurred when the television would cleanly display my Linux desktop; however, once a full-screen video started playing, the screen would go blank. It took me many hours to figure out that rounding errors in the calculated pixel clock caused the video refresh rate to be greater than 60 Hz. This, in turn, would cause the television's firmware to treat the video as invalid input -- resulting in a blank screen and no sound.

Furthermore, the latest Linux kernel drivers for ATI cards employ a new interface called kernel modesetting, or KMS. This means that, instead of the X server, the Linux kernel handles the probing of EDID information and configuration of all video timings. Because KMS is a new interface, there is no way for the user to easily specify his or her own timing information to the Linux kernel. Therefore, booting with the kernel option nomodeset is required to disable KMS and allow Xorg to handle mode changes.

Here is the modeline for Xorg:
Mode "1920x1080p"
DotClock 145
HTimings 1920 2016 2060 2200
# (67.5 kHz)
VTimings 1080 1084 1096 1125 # 60 Hz.
Flags "-hsync" "+vsync"
EndMode
Using this in the /etc/x11/xorg.conf had changed a little bit since the last time I had to do x11 hacking. Here's how we do it in 2010:
Section "Device"
Identifier "Configured Video Device"
Driver "radeon"
Option "NoDDC"
Option "IgnoreEDID" "on"
EndSection

Section "ServerFlags"
Option "AIGLX" "off" # Enabling this option seems to screw up firefox
EndSection

Section "Monitor"
Identifier "Configured Monitor"
HorizSync 15-68
VertRefresh 32-61
Mode "Original"
DotClock 148.50
HTimings 1920 2008 2052 2200
VTimings 1080 1084 1089 1125
Flags "-hsync" "+vsync"
EndMode
Mode "1920x1080p" # <60 Hz.
DotClock 145
HTimings 1920 2016 2060 2200
VTimings 1080 1084 1096 1125
Flags "-hsync" "+vsync"
# <(67.5 kHz)
EndMode
Mode "1920x1080i"
DotClock 72.5
HTimings 1920 2016 2060 2200
VTimings 1080 1084 1096 1125
Flags "-HSync" "-VSync" "Interlace"
EndMode
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1920x1080p"
EndSubSection
EndSection
And there you have it.

Update: I found another test video that caused screen blanking, and had to back off the pixel clock even further to a value of "145."