* Posts by Kevin McMurtrie

3553 publicly visible posts • joined 15 Jun 2007

My smartphone has wiped my microSD card again: Is it a conspiracy?

Kevin McMurtrie Silver badge

It's Google

I only had one phone that ate microSD cards. There was firmware a bug where it might be powered off to save battery and then turned back on at the wrong voltage. Oops.

Other than that, it's all Google. They've been slowly adding bugs and changing APIs to ruin non-cloud storage.

https://www.xda-developers.com/android-q-storage-access-framework-scoped-storage/

Not only does this ruin the usefulness, but also slows down random access by something like 10000 times. OsmAnd+ went from interactive map browsing to not finishing launching in a day.

There's a great workaround: Don't use Google Play Store. Apps in F-Droid and other locations can still access the fast filesystem APIs. I have 1TB with 120MB/s reads and 95MB/s writes. Not bad for a phone.

DiDi in deep doo-doo over 64 billion illegal acts of data collection

Kevin McMurtrie Silver badge

Nobody is that bad

Except Chinese government, Vietnamese government, USA government, Google, Apple, Yahoo, Amazon, Meta, Uber, Samsung, Walmart, and pretty much every web site not covered by the GDPR.

Java SE 6 and 7 devs weigh their options as support ends

Kevin McMurtrie Silver badge

Let the chaos begin

Big corps on Java 6/7 have tons of in-house tooling to modernize the language. Jump forwards to Java 17 and it's modernized already, but not in the same way. 15 years of custom tooling is redundant yet not mix-in compatible.

If you're going to pick a rapidly evolving programming language, you should probably update your compiler every few years.

Google pulls malware-infected apps in its Store, over 3 million users at risk

Kevin McMurtrie Silver badge
Paris Hilton

Well, it's a good thing that no malware, or any other app, can ask for permission to use the microSD card in Android 11+ without heavy throttling. Because that would... Um.... OK, not sure how recent API lockdowns for "security" are stopping malware. Could Google be making the changes only in self-interest? Nah, I must be paranoid.

Security flaws in GPS trackers can be abused to cut off fuel to vehicles, CISA warns

Kevin McMurtrie Silver badge

Re: Cut off fuel ?

It's GPS tracker, shock sensor, and a solid state relay on a cellular connected processor The relay is normally configured to cut or reduce fuel pump power if the vehicle is out of geo-fencing, speeding, or stolen.

I won't buy a new car if the dealership has installed an anti-theft system. It guarantees you're eventually stranded on the side of the road ripping off interior panels to find an amateur's hidden wire splices, or now, an exploitable cellular tracker.

You can liquid cool this Linux laptop to let the GPU soar

Kevin McMurtrie Silver badge
Flame

Tech companies that force employees to use corporate laptops for everything is big use case that I see, but they'll never buy whitelabel laptops like these.

Icon for my work laptop trying to compile.

Improve Linux performance with this one weird trick

Kevin McMurtrie Silver badge

Re: Disable swap

Swap removes unused data that would compete with more useful caches. It's generally best to leave it on. You can tune the "swappiness" parameter if the balance between data and cache isn't where you want it.

My personal server usually has a few GB of cruft that pages out over a period of several days and never pages back in.

Copper shortage keeps green energy, tech ventures grounded

Kevin McMurtrie Silver badge

Re: Possible solution....

Superconductors enable a whole lot of amazing physics. The world would be a different place if superconductors worked at common temperatures.

Kevin McMurtrie Silver badge

Re: Bloody batteries and solar panels

Copper is about practicality. Aluminum is a reactive metal encased in a durable oxide layer. Whether you use clamps, solder, or welding, aluminum electrical connections are difficult. Electrical grids can use it because giant clamps that occasionally become hot or throw sparks are fine. A momentary 3kW loss in a 1MW cable. It doesn't scale down well.

Copper clad aluminum solves some problems but, in my experience, it's very brittle. It breaks at every connection.

Meet Mantis – the tiny shrimp that launched 3,000 DDoS attacks

Kevin McMurtrie Silver badge

The target?

When I read the article, I can't help thinking that the target is Cloudflare. If so, their heroic efforts of protection are a lot less impressive. The serve more than just the good and honest web sites and are notorious for turning a deaf ear towards reports about phishing web sites.

Good news: Twitter fell over. Bad news: It's working again

Kevin McMurtrie Silver badge

The world's tech support channel

"I can unlock my phone without authentication"

Via email and phone tech support: "Let's run through increasingly difficult and time consuming diagnostic steps until you leave us alone or take your own life."

Via public Twitter post: "That's bad, we're checking."

Smart thermostat swarms are straining the US grid

Kevin McMurtrie Silver badge

It's partly fixed.

Big dimmer switches on tungsten lamps and junky CFLs beat up the waveform. Audio equipment and old electronics still use a 50/60Hz transformer, rectifiers, and a massive capacitor to make DC. It hammers the AC waveform down to a sharkfin shape and radiates enough EMI to make nearby metal hum. Audiophiles demand this for purity even when a switching power supply could be cleaner.

Large DC power supplies have a boost inverter in front to draw power from the whole AC cycle with a power factor of nearly 1. I peeked at my home's heat pump repair manual and it converts 240V AC to unregulated DC around 320V using an IGBT and inductor as a power factor boost inverter. That DC can then be used to spin the compressor at any speed using more IGBTs.

Small switching power supplies, like LED lights, use a buck/boost inverter with a moderately sized DC capacitor on the input. The power factor isn't perfect but it can use a good amount of the waveform.

Kevin McMurtrie Silver badge

New York City winter

NYC workers really do wake up at 6 AM in the middle of winter. That's why I'm in Silicon Valley, where the coffee maker can run on solar power.

These centrifugal moon towers could be key to life off-planet

Kevin McMurtrie Silver badge
Facepalm

Stupid idea

Let's face it, the only reason anyone wants to visit the moon is for a vacation away from gravity. Anything else can be reproduced on Earth.

FYI: BMW puts heated seats, other features behind paywall

Kevin McMurtrie Silver badge

BMW's money to waste

VW has Car-Net. They put that hardware in all their nice cars only for nobody to buy subscriptions. Many of them quit working with the 3G cellular deactivation, causing absolutely no outcry. I didn't even bother with the free trial while it worked.

Meta asks line managers to identify poorly performing staff for firing

Kevin McMurtrie Silver badge

Vote for anyone?

Someone that makes a lot of money, frequently creeps out the general public while representing the company, has caused numerous lawsuits, and is often a liability to making progress...

San Francisco cops want real-time access to private security cameras for surveillance

Kevin McMurtrie Silver badge

Have they tried walking?

Seriously, how hard is it to spot a crime in progress while walking in SF?

Choosing a non-Windows OS on Lenovo Secured-core PCs is trickier than it should be

Kevin McMurtrie Silver badge

Re: Triopoly

You all missed the sarcasm and Apple's now ironic use of the 1984 visuals.

Kevin McMurtrie Silver badge
Big Brother

Triopoly

There's no foul as long as it's not a monopoly. You may use a locked-down Apple or Google booting device if you don't like your locked-down Microsoft device.

Nokia Bell Labs identifies six key technologies for 6G

Kevin McMurtrie Silver badge
FAIL

Carriers? Devices?

These G revisions mean nothing until they cover more than the radio specifications. Nearly all 5G phones and carriers are crippled by incomplete and incompatible protocols. My Sony Xperia 1 III, for example, has SA and NSA 5G modes carefully chosen for each band so that there's virtually no functionality beyond the "5G" indicator. What a time saver that must have been for carrier compatibility testing.

VoLTE should have plenty of foreshadowing that 5G was going to be a mess. 1G/2G/3G are shutting down and modern phones are still failing because VoLTE doesn't work.

IBM wants to simplify 3D stacked chip manufacturing

Kevin McMurtrie Silver badge

Re: Sounds like a fantastic idea but ...

Turning down the clock rate a little bit in favor of much more parallelism is a good tradeoff.

There are still plenty of tasks that can be parallelized if more sophisticated software styles are used. People might have to stop using Python and Node, but other languages can handle it.

How a botched kernel patch broke Ubuntu – and why it may happen again

Kevin McMurtrie Silver badge

Zwhat?

I can't believe I actually avoided a bug by using the Docker ZFS storage driver.

Wash your mouth out with shape-shifting metal

Kevin McMurtrie Silver badge

Re: Gummed up

Dentists were finding infections caused by toothpaste microplastics back when they had blue sparkles in them. You don't want anything under your gums - that's pretty much the whole reason for cleaning your teeth.

I could be wrong, but it doesn't seem that a mouth is acidic enough to dissolve iron oxide quickly. The common hydrated silica can dissolve in ordinary water as long as it's not already saturated.

Kevin McMurtrie Silver badge

Gummed up

This sounds brilliant up until the part where these microscopic balls get trapped below the gumline and breed infections.

Five accused of trying to silence China critics in US

Kevin McMurtrie Silver badge
FAIL

Duhs

The DHS needs to look busy after they completely failed to stop uprisings of white nationalists and conservative extremists fueled by hostile nations and domestic crazies. One of them was elected as PRESIDENT OF THE UNITED STATES and almost overthrew the government. On top of that, the US still has cheap drugs appearing out of nowhere that are causing an explosion of unsafe homeless camps.

It's not the outcome everyone was looking for when the DHS began starving infrastructure projects of money and destroying the software industry with data access demands. Sure, they can claim that commercial airlines are safe, as if any nation would resort to such small and outdated tactics after what the world has witnessed.

Calls for bans on Chinese CCTV makers Hikvision, Dahua expand

Kevin McMurtrie Silver badge

Axis is worth a look

Kevin McMurtrie Silver badge

Don't even need to involve politics

Hikvision cameras are a dumpster of bad software that nobody should be shipping. They phone home. They have backdoors. They're completely insecure even when it's unintentional. I must have bought and returned 6 security cameras because they were whitelabel Hikvisions. Do everything possible to secure them then put them on the WAN. They're crashed, destroyed, or compromised in minutes.

Before you all go screaming about putting cameras on the WAN: Some network cameras are designed to be self-contained devices on the Internet. No 3rd party services, no subscriptions, and no VPN tricks. They can run be configured with multiple network addresses at once.

FedEx signals 'zero mainframe, zero datacenter' operations by 2024

Kevin McMurtrie Silver badge

The real problem

Parts and supplies shipped to their datacenters are sent by FedEx Ground.

Supply chain blamed amid claims of Azure capacity issues

Kevin McMurtrie Silver badge

Abuse contact

Microsoft could find some systems to reallocate if they reactivated their abuse contact. Unfortunately, their public IP addresses might have limited value at this point.

Israel plans ‘Cyber-Dome’ to defeat digital attacks from Iran and others

Kevin McMurtrie Silver badge

Re: Cyber Dome Schematics

Too late: https://mathworld.wolfram.com/Hemisphere.html

Kevin McMurtrie Silver badge

Popcorn!

Oh, sorry. I was thinking of Thunderdome.

Tencent Cloud slaps googly eyes on a monitor, says it can care for oldies

Kevin McMurtrie Silver badge
Big Brother

This is the trial run

It will be mandatory in all homes soon. For your health and safety, of course.

Jenkins warns of security holes in these 25 plugins

Kevin McMurtrie Silver badge
Pirate

Industry standard

You're not doing modern DevOps unless you're throwing access tokens at the most blogged about Jenkins plugins and GitHub Marketplace tools in your CI pipeline.

Arrogant, subtle, entitled: 'Toxic' open source GitHub discussions examined

Kevin McMurtrie Silver badge

Trash talking the 32 bit operating systems again? Digital Resources would like a word with you.

Kevin McMurtrie Silver badge

Re: Eh?

I agree that it's not a good sample quote out of context.

The GitHub ticket appears to be part of a larger battle where people are forcing unyielding ideals onto each other. The most talented contributors will be first to notice this toxicity and leave if there's not swift progress towards a resolution.

I'm not a manager because I dislike having to solve problems like this. I'm here for the technical challenges.

Behold this drone-dropping rifle with two-mile range

Kevin McMurtrie Silver badge

It's definitely a study topic for China since they're doing "reunification" too.

Kevin McMurtrie Silver badge

Re: Tubes

There's a form of Marx Generator with cascading triggering to generate a tuned pulse. I don't know if you could make a little one in a tube full of dry air to jam microwaves. Articles on them are about large scale SciFi types of experiments. (RF and tubes are not my strong points.)

Kevin McMurtrie Silver badge

Tubes

I can't help but wonder if old school tech could make these for $500. Various kinds of vacuum tubes are simpler and more compact for high power output in the GHz range than semiconductors. They're essentially electron beam whistles. Magnetrons, klystrons, certain forms of Marx Generators, etc.

Not much of this actually from 'China anymore,' says Northern Light Motors boss

Kevin McMurtrie Silver badge

Ride height?

Is it like navigating a canoe in a shallow river? It looks lower to the ground than a speed bump.

I was thinking about a road trip bike trailer with solar panels, batteries, and just enough motor to cancel out the trailer's weight and drag. A bonus would be a tiny dehumidifier to dry hand-washed clothes and produce drinking water.

I'd probably spend thousands building it then decide that I don't like bicycle road trips.

Google said to be taking steps to keep political campaign emails out of Gmail spam bin

Kevin McMurtrie Silver badge

Seen this poo before

It will work just like "opt-out" spam where a marketing category/list/phone is used only once before a new one is invented. Whether you opt out or not makes no difference.

I strike candidates off my ballot when they send me email or SMS spam.

Soviet-era tech could change the geothermal industry

Kevin McMurtrie Silver badge

Re: what if ...

Microwaves reflect off good conductors. Even a fine metal screen will do. It's why we don't all carry gyrotron blasters in steampunk holsters.

Lots of rocks and minerals conduct electricity and EM energy, but poorly. They're good at being resistive heating elements.

I still have my doubts that it would be practical. Something will have to suck the rock dust and geothermal steam up several kilometers without clogging. I imagine it's both sticky and heavy.

To Washington's relief, GlobalWafers to spend $5 billion on Texas plant

Kevin McMurtrie Silver badge
Coat

1500 jobs

In a 300mm plant? They'll never fit, especially Texans.

Contractor loses entire Japanese city's personal data in USB fail

Kevin McMurtrie Silver badge

Japanese businesses tend to be conservative. It's not unusual to see stacks of paper forms and shift managers hitting them with approval stamps.

I wouldn't go to a pub with work documents, though.

Whatever hit the Moon in March, it left this weird double crater

Kevin McMurtrie Silver badge

Hot and fast

One crater from impact, the other crater from the projectile spontaneously boiling off into space.

Totaled Tesla goes up in flames three weeks after crash

Kevin McMurtrie Silver badge
Mushroom

EV pit 1 mile

Highways have runaway truck ramps to handle brake failures. Next up, roadside pits to safely bury damaged Teslas.

SpaceX: 5G expansion could kill US Starlink broadband

Kevin McMurtrie Silver badge

Ouch

The private SpaceX investors aren't going to be happy if they're hearing about Starlink not having exclusive access to it's RF band after they've invested.

Now Amazon debuts an AI programming assistant – CodeWhisperer

Kevin McMurtrie Silver badge

If only

# Generate correct IAM resources and references for this application

Bet that doesn't work.

Amazon shows off robot warehouse workers that won't complain, quit, unionize...

Kevin McMurtrie Silver badge
Terminator

Plus ça change, plus c’est la même chose

Manager: Raise the voltage.

Tech: Sir, they're at their limit and they need maintenance. I can smell them burning.

Manager: Raise the voltage!

Samsung fined $14 million for misleading smartphone water resistance claims

Kevin McMurtrie Silver badge

I propose a new law

Anything not covered by warranty doesn't exist. Advertisements and specification sheets for electronics will get a lot shorter.

Moisture exposure turns a dot red and voids the warranty? It's not waterproof. A little bump breaks the glass and it's not covered? It's not a durable phone. 5G not guaranteed to work? It's not a 5G phone.

This startup says it can glue all your networks together in the cloud

Kevin McMurtrie Silver badge

Not flashy

I'd switch everything to encrypted traffic over IPv6 but such simple solutions never make your blog posts famous. People would rather read about a cleverly complicated global LAN aggregator.