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mnw21cam

6,090 karma · joined October 29, 2013

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mnw21cam··on A failed experiment in laptop cooling
The little tiny fans in the laptop will typically be able to move a small amount of air with a large pressure. The fans you have used here externally will be able to move a large amount of air with a low pressure, but since you're trying to cram that air through a small space, they will actually be able to move a minuscule amount of air with that same low pressure. That's probably mostly why you aren't seeing much improvement.

I'd say that you have two options.

The first is to try to use external fans to force more air through the laptop than the internal fans manage. You'll need high pressure (probably centrifugal rather than radial) fans to achieve this. They'll be noisy.

The alternative, which can use quieter low-pressure fans like the ones you have, is to just ensure that all the air going into the air intakes on the laptop is as cold as possible. That is, make sure the air going in hasn't just come out. And make sure there isn't any more restriction on air flow than the minimum possible, which the raised gap under the laptop will achieve. You basically just want to direct fresh cold air from far away from the laptop towards the air intakes, and pull the air emerging from the air outlets as far away from the laptop as possible. A horizontal breeze flowing across the bottom of the laptop is probably one of the best ways to achieve this.

mnw21cam··on Unlocking any car from X brand in most of the world
The lock on my front door merited a 15 minute video from the LockPickingLawyer. He could pick it, but it required some time and tools that the average lock picker wouldn't have available. 15 minutes has to be a record for him, but still it's only 15 minutes.
mnw21cam··on Uranium cubes reveal why the German nuclear project failed
Also the 1965 film "The Heroes of Telemark", the documentary "The Real Heroes of Telemark" by Ray Mears, and his book of the same name.
mnw21cam··on AI is forcing us to pay off 40 years of technical debt
One of the reasons the M series of processors from Apple can manage such a high instruction throughput is that the instructions are fixed length, which allows them to just be slotted into the multiple instruction decoders. The instructions compression provided by CISC in the amd64 instruction set means that the instructions do not start at predictable places, which makes it much harder to decode many instructions per clock cycle.
mnw21cam··on Kalshi and its co-founders face felony charges for violating Utah gambling laws
Last time I visited the US, I had never seen as immense an advertising banner as the one on the side of the building in LA advertising cannabis.
mnw21cam··on WTF Ubuntu?
Yes, it's the normal Debian kernel plus DKMS. It just works seamlessly.
mnw21cam··on WTF Ubuntu?
I'm writing this on a Debian machine that is using ZFS. It's Red Hat that has a problem with ZFS, not Debian.
mnw21cam··on Tell HN: I'm going on strike this November
Generally when you are on strike you do not get paid.
mnw21cam··on Solar power is becoming bigger than nuclear
A tenth is perhaps an exaggeration. It depends on how you count your lifespan.

A lead-acid battery mainly ages by cycle count. If you keep a decent quality battery charged up, and don't regularly discharge it too much, then there are claims they will last ten years. If you discharge them excessively each day, then you'll kill them really quickly.

A LiFePO4 battery has a quoted cycle count. But really what matters is simply elapsed time - the battery will last about ten years if it isn't abused, and you'll be hard-pressed to actually do that many cycles in that ten years. It ages mainly by elapsed time, not cycle count.

I used to argue that for an off-grid solar solution, you should get lead-acid batteries with capacity so that you are normally never discharging below 70%, and that this was still cheaper than getting LiFePO4 batteries with smaller capacity that you would discharge down to 20% each night. The lead-acid would then give you a larger reserve capacity for those instances where the weather is foul for a bit longer than normal and you don't get meaningful charging.

However, since then LiFePO4 batteries have continued to decrease in price, there are new Sodium batteries available now, and I haven't done the calculations again - the best option may have switched over, or it may be so close that it doesn't really matter which one you choose.

mnw21cam··on Why my Asus laptop kept rebooting after sleep and how to fix it
I have a completely unrelated problem with my rather old Asus Zenbook UX305C. The Intel graphics driver for Linux (specifically Debian) crashes the whole OS whenever it enters DPMS screen blanking. I'm able to tell the interface while logged in to never blank, but the login/unlock screen use a completely separate X server with separate settings, and I haven't been able to work out how to just completely disable DPMS. So while it can sleep and suspend, I can never lock the screen, and when I wake it from sleep/suspend I cannot leave the login screen long enough for it to go into screensaver, because that will crash the computer.

It's annoying. Back in the mists of time when the laptop was new, it all worked fine. It's the updated Intel drivers that are broken.

mnw21cam··on Most advice is right for the person giving it
When I go hiking for a couple of weeks (with significant elevation gain each day), I eat like a pig. I mean, something like 5000 calories a day. I lose weight over that time. So it's possible to lose weight through exercise, however you really do have to spend a very significant chunk of each day doing it for it to work.

Not eating as much takes much less of your busy day.

mnw21cam··on Tesla Roadster
Is this page geo-locked? All I get is a page telling me that I'm unauthorised to view the page.
mnw21cam··on Things to know when you get cancer
I work with monogenic diseases, where a single mutation (or a pair in the same gene for recessive conditions) does cause disease. There's a lot of them. Your statement isn't true for these.

You're talking about polygenic traits. That's a different ball game entirely.

mnw21cam··on Things to know when you get cancer
That's not universal. I work in genetics, and we did an investigation a few months back, by asking various AIs whether a particular mutation causes $DISEASE. Invariably they were very strongly biased towards saying yes, even for completely obviously benign variants. I think that's because the majority of the literature out there describing variants is describing pathogenic ones, because why would you write an article about a benign variant, so the only material it has ingested is articles describing variants as pathogenic. In reality, the average person has millions of variants, and almost all of them are completely benign, so there should be a very strong pre-supposition that a given variant is benign unless there is fairly strong evidence saying otherwise.
mnw21cam··on The United Kingdom generates less electricity per person than in the 1970s
It's helped a lot by the fact that solar panels have become very cheap indeed, so the fact that we don't get as much sun as other places doesn't matter so much - it will still pay off, as long as you can actually use that energy effectively (which may require batteries or a decent export payment rate).
mnw21cam··on The United Kingdom generates less electricity per person than in the 1970s
Astronomers definitely do like them because they're orange, and they can filter it out of their photos.
mnw21cam··on Fingerprints are the new cookies
The typical wording is "We value your privacy". Which just means they think it's valuable and want a part of that pie thank you very much.
mnw21cam··on The tilde in your PATH may not be your HOME
Any fule no that a file name is just an array of bytes (excluding the null byte and the slash). You can create a file with a name that is an invalid UTF-8 encoding. It's fun to see how much software chokes on that!
mnw21cam··on The tilde in your PATH may not be your HOME
In every single directory you're ever going to have as cwd when running that software?
mnw21cam··on Shipping JPEG XL in Chrome
It's not the PNG encoding that causes the loss. The optimisers are literally creating a different image and then losslessly encoding it as PNG.

But it's also a valid point.

mnw21cam··on The art of defusing a second world war bomb
Some explosives degrade by becoming more and more sensitive and dangerous, not less.
mnw21cam··on The lamps in my house
Um, no. Have a look at the two pictures just under the title "Akari 75A". They are of the same room. On the right-hand picture, the ceiling lamp is round, but on the left-hand picture, the ceiling lamp is oval.

https://pliggle.homeip.net/tmp/squished_pictures.jpg

Clicking on the pictures does nothing - are you relying on Javascript to do these things for this page?

mnw21cam··on The lamps in my house
The picture just below the title "Tizio Micro" looking down on the lamp with the lawn behind, part of the collage of five photos, has been squished horizontally or stretched vertically quite a lot. Many of the other photos on the page have also been stretched in one direction but not the other.
mnw21cam··on The lamps in my house
Nice lamps, but what's with the photos very significantly stretched out of aspect ratio?
mnw21cam··on Hole Punch: Sling your spaceship around gravitational fields
I get that it's only a game, but all of these gravity games (with a couple of rare exceptions) ignore the fact that the black holes (or planets/suns) should be moving as well.
mnw21cam··on Singapore govt dating app uses Gale-Shapley stable marriage algorithm
> Only about 4% of marriages are between Democrats and Republicans

Part of that might be because only 4.2% of the population of the world lives in a country that has both democrats and republicans.

mnw21cam··on 2DWillNeverDie
I was using a desktop browser.
mnw21cam··on 2DWillNeverDie
Is this page geo-locked? All I get is a "403 forbidden" when I try to access it from the UK.
mnw21cam··on How did AMD Ryzen get 50% faster in two years?
All I get is a 403 forbidden when I try to access this page.
mnw21cam··on I said no and Apple said yes
It's there for sure. However, it's not particularly relevant to the following two points:

1. The author should be able to do whatever he wants with his own device. That he owns.

2. The author should be able to decline consent for data-gathering activities and general AI stuff that he doesn't want.

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