Well someone just asked me what laptop would you buy. The good news is that with Intel performance stalking you have lots of choice. Even three year old laptops are the same speed as even the newest Kalby Lake versions. PC Magazine remains a decent source of reviews for this so here’s a summary but right now there is a split in the choice you can make. The main issue is laptop longevity.
- Chromebooks. Let’s face it for $250 you can consider a laptop a throw away commodity. It’s something with an ok
Batteries are rated in one of two ways. Watt Hours which means for how many hours can they supply 1 watt of power. The new MacBook Pro 2016 has a 76 Watt-hour battery.
Put another way if you load Battery Doctor and see you are drawing 18 watts then you will have roughly 76/18=4 hours of life.
Another common measure is amp-hours. This assumes you know the voltage that you are pull out. For a MacBook Pro 2016, it says it has a 6773 milliamp hour or 6.7Ahour. By the way that means that the output voltage for the battery is 76/6.7 since V x A = W so it is a 11V battery internally.
Now for the reason for the low battery life. Apple says the MacBook Pro should last 10 hours or they think average battery usage is 7.6 watts.
Today when I started my MacBook Pro it was running at 4 watts so the mystery is why yesterday it was 18 and today it is 4.8. Sounds like a background process or Safari going crazy to me.
As a final aside the older MacBook Pro 2015 had a 99.5WHr battery. The FAA maximum for a battery is 100WHr for safety reasons. That means that for their 10 hour use they were expecting 25% greater power usage at 9.95 watts. So the new mbp 2016 is supposed to be much more efficient.
One interesting thing is that such a lower power consumption, you can use a tiny 10 watt, 2 amp USB charger to keep your laptop powered up. U can even use a car charger to freshen the battery. That’s one of the nice things about USB C. In fact even a lowly 1 amp 5 watt USB outlet is pretty good with today’s low power consumption laptops. I now need a USB A to USB C cord when going to meetings as it’s lighter. And your little iPhone charger even at 10 watts should be able to charge a battery in eight hours or over night.
The huge 87 watt charger you get with your MBP 2016 should be able to recharge a completely dead 76 watt hour battery in less than an hour. Even with power losses which would make it longer, that’s pretty impressive.
So on to figuring how why the laptop is drawing so much! But this USB c does add lots of flexibility.
Ok so this weekend, I’m staring at a phone on a Verizon MVNO (the AARP sponsored one) which worked fine and suddenly it can’t access the Internet. I also see an exclamation point next to the LTE signal symbol.
And when you click on the internet you get to a site called datareplenishment.com and it says page not found.
Well it turns out that the days of just getting a new phone and swapping a sim in don’t quite work. A few calls to product support and it turns out the solution is simple but you can’t do anything about it by yourself. The carrier had to turn on and off the account from their side and all was good!
Well folks were asking on Facebook (it does seem like most of my “clicks” are landing there and on Yelp these days) about battery life with the new MacBook Pro 2016, I put a battery meter on this for the last few days and here’s what I’ve found even after applying the 10.12.3 update which fixed a bug that Consumer Reports had with icon caching.
- This application Battery Health is free and lives in the tool bar and is way more helpful than Activity Monitor for monitoring usage. When you see a spike (that is usage beyond say 5 watts), check your Activity Monitor and sort energy usage to see what is running.
- The big battery hog for me appears to be Safari. I think there is probably a bug somewhere, but normally running just a browser, I’m burning 4 watts. To see what that means, the battery in the MacBook Pro is 6700 mAH and 5 watts is about 300-500 mAH draw, so the battery should last 12 hours at that low rate.
- However, sometimes, when Safari alone is running, it pops to 14 watts, that is about 1200 mAH and that is what is getting me to 4-5 hours of life. The solution is to restart Safari and then the usage falls again.
- I also see that Spotlight also will run in the background as will the iMessage, iPhone Agent and other daemons, this causes a spike as well to 8-10 watts (600mAH-800mAH) and particularly for iMessage this can go on for a long time.
- Finally, if you do some things like Photo sharing, then you force the Mac to transcode. This gets very warm particularly for video and I see usage spike to 30-50 watts as the discrete GPU turns on.
Well with so many headlines, it’s nice to find some really engrossing (non big budget) action/thriller series. We’ve watched two you should check out:
- Shooter. Yes the original movie was kind of hokie (although I loved it), but the series is really terrific. 10 hours of really, how does he get out of this anyway. Plus the soundtrack is just awesome. And it worked just as a standalone series. Omar Epps is just awesome as usual and Ryan Phillippe and the cast are great. It’s very loosely based on the original film which was loosely based on Point of Impact.
- The Night Manager. I think I wrote about this one already, but it is a series that I’d love to watch again. From our friends at the BBC. It loosely follows the plot of the John LeCarre novel.
Well, we are in a new era in 2017, so nice once again to look at how to stay safe and private in this new age, here are some recommendations.
For the truly tin foiled hat paranoids
Remember just because you are paranoid doesn’t mean you don’t have people snoopy into your digital life, so here are some recommendations from Bruce Schneier. Note that as always, the actually applications these guys produce can be hacked, but you have to trust someone.
- Signal. While there are many secure messaging applications out there, this one is open source and really protected. The main issue is that the other person has to be on Signal too. So I get maybe a message month, still it is the safest.
- ProtonMail or Lavabit. In the post Snowden era, this seems way more practical than trying to use OpenPGP keys etc. They do allow web browsing of your mail by the way.
- Tor Browser. This browser is slow, slow, slow and disables just about anything useful, but it is the safest out there for looking at cnn.com without anyone knowing you are doing it.
- Air Gapped PCs. They do seem take their security seriously and if you keep your connection time to the internet at a minimum. Some would say never connect it and use a hand scroll to copy notes from an air gapped machine to another, you should be safe.
- Veracrypt. With TrueCrypt dead, the best source of on disk encryption is still open for me. But basically you have to encrypt the files that really matter. I need to give this one a try, but it uses Fuse to create a new file system handler so it is pretty transparent. You can get Fuse for OS X from Macports or from Homebrew by the way
- Hashed user names. It is pretty useless to use all this if you just use the same user name for everything, so you want to create a random user name for everything.
Ok, for the double double paranoid, the question is how you got your laptop in the first place and how to prevent recognition given all the cameras out there in the real world.
- Wear sunglasses and a hoodie. OK there are lots of security cameras, so people are selling actual camo gear to confuse image recognition (I said this was about the paranoid didn’t I?).
- And of course take public transportation and map the cameras so you to find some blind spots and change your clothes in them. OK I feel like Jason Bourne now.
- Burner phone and laptop. Walk into a store (preferably about miles from you usually live) with your camo gear and buy a phone. You’ve seen it on Breaking Bad I’m sure and change them often. It’s good that burners and chromebooks are so cheap now 🙂
- Tails . Run the operating system for your laptop from a USB key so you don’t have to worry about viruses. OK, this is getting a little crazy!
- Make sure that when you turn on your laptop or phone, it is in a very public spot as your MAC id on your laptop and IMEI on your phone do identify you the local cell phone tower or access point. You can spoof your Mac ID, I’m not sure about your IMEI
- Throw away your phone and laptop regularly.
For the concerned but practical
If you actually want to talk to more than the 3 tinfoils people in your life here are some other choices.
- WhatsApp. This actually uses the same open source security protocol as Signal and is end to end encrypted. You can tell because Facebook gets in trouble all the time around the world with this applications. It’s less secure than Signal, but more people use it.
- iMessage. Another proof by example, but this should be reasonably safe which SMS definitely is not.
- Private Internet Access VPN. You have to trust your VPN provider, but this will at least get you partially there. These guys are outside the US, so maybe a little safer.
- Startpage. If you do not want Google to track what you do then you want to use an anonymize for your queries. Startpages is one of these companies that give you some protection.
- Apple Encrypted DMG and FileVault. Turn on file vault to on disk encrypt your hard disk. And for really secret stuff create an encrypted DMG on top of that.
- 1Password. They have a zero knowledge system of storage so that they do not know what is being encrypted which also means if you forget then your keys are lost forever, but in the world of encryption, they allow you to use really random passwords.