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Journal Journal: Dell XPS 12 Ultrabook problems

The Dell XPS 12 Ultrabook has a number of problems that require too much attention. Perhaps that's why I bought one new today for over $400 off list price. This Ultrabook has a 12.5" 1920x1080 screen, touch screen, Intel Core i5, 4 gigs of memory, 128 GB SSD, and has a nifty screen flipping feature so you can use it like a tablet.

Here are a few problems so far.

Comment Bletchley Park is a ruin (Score 1) 99

I visited part of Bletchley Park in the late 2000s and it was a ruin. The guard at the gate house said they are very much in need of money. The buildings were falling down.

Sure, it is a site of historical importance, but even the Enigma-cracking computers like the esteemed Alan Turing's bombe were dismantled and scrapped decades ago, and the hundreds of subsequent generations which won the war of the Atlantic are all over the world in both their original form, as replicas, and as computer emulations.

Comment Re:Amazing how times change. (Score 1) 444

I just toileted three Seagate Barracuda drives of varying vintage, from three to five years old. I don't understand why my Western Digital, Samsung, Hitachi, and Toshiba drives don't crap out so soon.

In particular, Samsung F1 drives just flat out refuse to die, so why isn't any of that rubbing off on new owner Seagate?

Comment Re:Hitachi Deathstar is the most reliable now? (Score 1) 444

Yes. The IBM "Pixie Dust" technology wasn't quite ready or understood well enough to be manufactured in a repeatable, reliable way.

Though sometimes quoted that this was the reason IBM exited the hard drive manufacturing business, it was a minor factor at best. IBM had been seeking a buyer for that business unit well before Pixie Dust spawned the annoying DeskStar "DeathStar" jokes.

Comment Consumer-grade is not for you (Score 1) 444

This study is interesting, but consumer-grade hard drives are exactly not supposed to be used in this way. I worked on server-grade hard drives (also 3.5") that were going seven years old without spinning down and getting slammed hard all day, every day. The failure rate was less than 1% for all brands in seven years' time in an array that filled two server racks. The 2.5" drives are even better.

Vibrations causing failure? Brother label makers? Isn't this the online storage vendor that was bragging about shucking portable hard drives to get around a soft embargo imposed during the Indonesian flood crisis?

Comment Re:Z-Wave (Score 1) 336

This is true, but most contemporary systems aren't SWM (which is a DirecTV term). DISH Network has a similar band-stacking technology but it's also rather rare and expensive and only found on relatively new installations. It's nice to see the major satellite TV providers have embraced band-stacking so we don't need so many cables and complicated switches anymore, even if it's at a premium price.

Comment Re:Z-Wave (Score 2) 336

Yes, coaxial cable is absolutely required. Don't skimp. It has more bandwidth and it's 100% reliable.

When I renovated the basement, I bought a spool of quad-shield dual-line RG-6 cable with copper core and ran it to every wall in the basement and to every wall on the main floor. Then I ran a pair to every bedroom since I was able to use a riser to the attic. Then used a high-frequency splitter in the basement. This is how you get whole-house DVR working properly.

You *want* to have RG-6 copper-core cable to each point in addition to ethernet. You need it for all home television service. No matter cable, FiOS/fiber, U-verse, or IP-TV, they all use MoCa to communicate with the other TVs and you want to have that. Satellite also needs two cables to each point.

Plus your home DVR solution, whether cable, satellite, will use the RG-6 cable with MoCa to distribute the video to your TVs. The MoCa connection will be the only one that will allow you to reliably distribute non-buffered HDTV to all televisions in the house from a whole-house DVR. FiOS, for one, requires it.

RG-6 is not for analog--it's for modern televisions of all types.

Comment Hard wiring to every room with RS-485, RS-422 (Score 2) 336

Since you have the grand opportunity to design your house before it's built, you want to use the best home automation protocol available. Hard wiring to every room with the RS-485, RS-422, TIA-485-A family is the best long-term bet. This will always work now and in the future. It won't be affected by obsolescence, RF interference, or electromagnetic interference.

You can extend your house later with the toy protocols later like Zwave, INSTEON, Zigbee, Bluetooth 4.0/Smart/WiBree, or whatever. For the core home automation where reliability is required, like lights, doors, alarms, sensors, you should use ANSI/TIA/EIA-485. The wires will be the same as your ethernet in case you ever change your mind, but if you design it right, you won't need to.

You rarely see any theaters, hotels, or shopping malls using anything else but ANSI/TIA/EIA-485.

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