Root Access

bwDraco

00:00

Case and motherboard have to remain for the life of the system.

Journeyman Geek

not necessarily.

hm

pcworld.com/article/3063508/components/…

@Bob ^

bwDraco

@JourneymanGeek ARM dominance.

Core m is the way to go for Windows tablets.

Journeyman Geek

@bwDraco Also, that the mobile market is super low margin

this is odd since they licenced some sofia IP out to the chinese

Journeyman Geek

01:41

hmm

softwarerecs.stackexchange.com/questions/31713/… bit of a 'pony' question. I wonder if windows is even aware, explicitly of what monitor a window is on.

Ben N

@JourneymanGeek MonitorFromWindow

Journeyman Geek

ahh

cool

So the basic behaviour I want it plausible

Bob

02:58

@JourneymanGeek That's honestly a pretty big surprise, at least as far as tablets go.

Journeyman Geek

@Bob and netbooks.

Bob

@JourneymanGeek Actually, no. Looks like PCWorld was just wrong...

Or at least if we take AnandTech as more trustworthy :P

> Also not discussed in greater detail is Intel's future plans for their overall Atom lineup. With Apollo Lake announced just earlier this month, it's clear that Intel's Atom efforts have not been cancelled entirely. We will still see the new 14nm Goldmont cores appear in low-cost PCs under Apollo Lake, most likely in several 11-to-13 inch high volume devices. However for the moment there is not an Atom core on Intel's roadmap beyond Goldmont.

> What's less clear at the moment is whether this will also impact the low-cost/non-premium tablet market - as embodied by products such as the Surface 3 - as Intel is not discussing the status of the Willow Trail platform at this time. Previous comments made to Patrick Moorhead indicate that tablets are impacted, but for the moment Intel is staying mum on anything that isn't smartphones.

So, yea, a certain amount of assumption on PCWorld's part.

And it kinda makes sense... Atom is rare on smartphones, pretty much just Asus and Lenovo. But it's very very popular on tablets.

Journeyman Geek

I was kinda expecting them to licence the cores.

Yeah.

HackToHell

03:20

howtogeek.com/249966/…

Anyone tried this out ?

Bob

Nup. Not running a preview at the moment.

Reminds me that I need to install VMware again.

HackToHell

03:47

Hm, I;ll get it when it comes out to everyone I guess

Journeyman Geek

for some weird reason vbox won't let me create 64 bit VMs

I need to check if VT-X is enabled

HackToHell

Windows 10 new bash users. Welcome! The first few commands you should master: ls cd rm -rf /mnt/c #Build2016

Tweeted by seesharp on March 30, 2016 at 4:16 PM

Journeyman Geek

lol

That's a very Richard thing to do.

Bob

04:28

@JourneymanGeek Also possible that something else is using VT-x. Like Hyper-V.

Once you install Hyper-V it's always on.

Hyper-V doesn't support nested virtualisation yet.

Journeyman Geek

Pretty sure I removed hyper V

Bob

@JourneymanGeek Well, you want to be more sure :P

When you install Hyper-V the "host" instance is actually virtualised too.

lol.

@allquixotic twitter.com/codinghorror/status/725870124264124418

HackToHell

05:04

@Bob And that renames all the network adapters

Broke one my script

Journeyman Geek

@Bob there was a vbox update that fixed it

hm. No

it did not

Bob

05:20

lol

Rahul Basu

What... does that command do?

Journeyman Geek

lol

potentially delete everything on your c drive

ls - list

cd change directory

rm -rf /mnt/c - delete everything in /mnt/c recursively . In the case of bash/ubuntu for windows, that is where your c: is mounted

Rahul Basu

05:40

!!ihavenoideawhattonamethistaylorswiftcommand

ChatBot John Cavil

Journeyman Geek

06:11

heh. I fixed the 'hum' in my audio gear

I moved it under the other monitor, since that has a non metalic base.

bwDraco

Dammit, just bricked an otherwise usable 18650 Li-ion cell after 21 months of service by using it to drive a high-power inductive load.

It's a protected cell; must have busted the protection circuit.

I've got spares on hand so no biggie.

18650s are cheap anyway.

Journeyman Geek

Which makes no sense since both devices that were having a seeming ground loop arn't sitting on metal bases, and one has a plastic case.

bwDraco

06:27

(namely, a motor from a vacuum cleaner which was dismantled due to a failed NiCd battery.)

Didn't expect the motor to pull such an absurd amount of current even with a 4V input.

At least the cell protection failed open, rather than short.

The latter is potentially dangerous as the cell effectively becomes unprotected.

I still have one more spare cell in the fridge.

Alright, back to work.

Any comments on this, just let me know.

Bob

07:25

@bwDraco You realise motors pull their max current at stall?

In fact, a low voltage might've made it worse.

bwDraco

It's a dumb brushed motor.

Bob

A low voltage might not even get it out of stall.

bwDraco

No motor controller, no nothing.

The motor did spin.

Bob

@bwDraco It's basic motor physics.

Doesn't have anything to do with a controller.

Current draw at typical load is generally far lower than current draw at stall.

Current draw at no load (full speed) should be almost nothing. Assuming, of course, that it has a max speed - otherwise it'll fall apart first.

bwDraco

I know, but the stall current was far, far higher than I had anticipated.

Bob

07:27

There's a pretty good write-up here: electronics.stackexchange.com/questions/229218/…

bwDraco

The back-EMF current must have overwhelmed the battery's protection circuit.

Bob

@bwDraco Nope.

The lack of back-EMF would've caused it to draw too much current.

Unless you're applying external torque to the motor, the back-EMF should never exceed forward current.

bwDraco

Then why would this burn out the protection circuit when a dead short wouldn't?

Are motors pulsed loads?

What makes inductive loads so pathological?

Bob

@bwDraco So you tested a dead short?

Could be any number of reasons, really.

I don't have the full details of what you did.

bwDraco

If I try to short the cell, it'd just shut down immediately with no ill effects, and nary a spark is seen.

Bob

07:30

It's even possible that the motor drew so much power that it under-volted the cell.

bwDraco

The cell was fully charged.

Bob

@bwDraco And what do you short it with?

bwDraco

Just a wire.

Bob

What kind of wire?

Could be that the motor actually has a lower resistance.

bwDraco

Just a regular copper wire.

Bob

07:32

Thickness is significant.

Or you could just measure resistance of each with a multimeter.

bwDraco

It's a very short wire. The resistance should be trivial.

Bob

It's also possible that the motor was at the boundary where the protection circuit does not cut off while a dead short does.

bwDraco

For some reason, motors create bigger sparks when connected than short-circuits. Why?

It's like the voltage is higher than the output of the cells alone...

Bob

@bwDraco The diameter of the wire is still significant.

I've seen plenty of short copper wires that have a very high voltage drop when drawing an amp or two.

bwDraco

Do inductive loads cause very high peak voltages, above the voltage of the input?

Bob

07:36

For reference, a 20 cm long 28 AWG wire will draw just under 100 A at 4 V.

@bwDraco What's the rating of the battery you're replacing?

bwDraco

The motor was originally designed to run on a 14.4V NiCd battery pack.

Bob

How long did the motor run for, what kind of load was on it, did it spin smoothly, etc..

bwDraco

The motor ran at a slow but constant speed with four AA NiMH cells. There was no significant load on the motor except for the fan blades.

Bob

And with the Li-ion cell?

bwDraco

Started up for a tiny moment before the protection circuit shut the cell down.

After a few tries, the cell just failed altogether and would not charge normally.

It did have some power. The cell read 4.0V open-circuit but the protection circuit had failed.

Bob

07:44

You didn't happen to have an ammeter hooked up to it?

bwDraco

No.

Bob

@bwDraco What makes you think the cell failed (or protection circuit), then?

bwDraco

The cell would not charge or supply power normally.

Bob

And what cell + circuit was this?

bwDraco

It'd just drop the load if I tried to pull a non-trivial amount of power from it.

It's a protected 18650 cell intended for use in flashlights.

Bob

07:45

Because there's a decent chance it's just a shoddy protection circuit that cuts out fine with a very high current (short) but takes time to do so with a motor.

@bwDraco Lots of quality variation there. Going to have to be more specific.

bwDraco

Nitecore NL189. It's not a no-name.

It's seen a considerable amount of use before.

Like I said, it's been in use for 21 months with little trouble until now.

Bob

Eh. NCR18650B wrapped by Nitecore?

bwDraco

Yup.

Probably a bad protection circuit.

These protection circuits are not designed to cope with high-power inductive loads.

Bob

@bwDraco You could pull it apart and take a look.

@bwDraco Seems more likely that it's just a polyfuse that you've killed by repeatedly tripping.

bwDraco

Polyfuse? I guess I'll give it a day or so and try again.

The underlying cell seems to be fine.

Bob

07:50

@bwDraco They have a limited lifetime.

Repeated trips, especially in a short period, could have permanently damaged it.

7 mins ago, by bwDraco

After a few tries, the cell just failed altogether and would not charge normally.

I bet if you full shorted it multiple times that could've happened too.

The other thing is it trips faster if you draw a really high current.

So the slight overcurrent of a motor might've actually been worse for the fuse than the dead short.

bwDraco

It drops to about 1.0V and stays there until I put it back in a charger.

The cell goes back to a normal voltage (4.0V) but doesn't seem to be accepting current; might be a failed protection circuit.

The cell impedance is extremely high.

Alright, it's getting late.

I'm not going to trust it.

Bob

Heh.

@bwDraco Should've thought of that before trying it :P

(Drawing large currents from a Li-ion battery... yeesh)

In a way, you're lucky the protection circuit worked.

bwDraco

1 hour ago, by bwDraco

At least the cell protection failed open, rather than short.

1 hour ago, by bwDraco

The latter is potentially dangerous as the cell effectively becomes unprotected.

Bob

@bwDraco Max continuous discharge is a bit under 5 A.

bwDraco

There was probably a 5-10A or so peak.

It's this "just over the protection limit" that probably caused the failure.

7 mins ago, by Bob

So the slight overcurrent of a motor might've actually been worse for the fuse than the dead short.

Night.

Bob

08:00

'night

Nominal max continuous discharge is 4.875 A: batteryonestop.com/baotongusa/products/datasheets/li-ion/…

Strangely precise :P

HackToHell

2-Hour Anime Mix - Best Of Anime Soundtracks | Emotional Ride - Epic Music

►

Has some pretty epic soundtracks

Journeyman Geek

@Bob boom?

HackToHell

and epic wallpapers too xD

Bob

@JourneymanGeek Yes, that's the other potential consequence :P

@HackToHell \o/

HackToHell

Set the attack on titans theme as my ringtone

Missed three callls already

Don't regret it :D

Journeyman Geek

08:16

No boom today. Boom tomorrow. Always boom tomorrow.

!!xkcd ringtone

ChatBot John Cavil

It beat out 'Clock radio alarm', 'B-flat at 194 decibels', 'That noise from Dumb & Dumber', and 'Recording of a sobbing voice begging you to answer'.

Journeyman Geek

Not that one....

kiran bbnl

hello...
i need help
regarding the hosts allow/ deny options in apache 2 webserver which runs on ubuntu
how can i avoid selected hosts to be allowed/denied from the server...??
its urgent.....please be kind enough to help
somebody out there....?

Journeyman Geek

If it is urgent, you really ought not to be asking in an unfamiliar chat room

(I run lighttpd. Have you looked at the document for Apache?)

HackToHell

kinda lame solution,use ufw ? :P

(I run nginx, I have no idea)

kiran bbnl

08:23

yeah sir..

lighttpd can be used to makew apache talk with hosts.deny file right?

sorry

if it was apache, i could find an answer to deny selected hosts.

apache 2 looks kinda hard

somebody able to make this out..?

@Hack

can ufw be used to allow specific ports to specific network...?

@HackToHell

Journeyman Geek

@kiranbbnl you need to look up the documentation for the firewall....

DavidPostill

08:41

2

Q: /etc/hosts.deny ignored in Ubuntu 14.04

I have Apache2 running on Ubuntu 14.04LTS. To begin securing network access to the machine, I want to start by blocking everything, then make specific allow statements for specific subnets to browse to sites hosted in Apache. The Ubuntu Server is installed with no packages selected during instal...

@kiranbbnl

Bob

09:02

argh

@JourneymanGeek the shogun battleship one is nearly impossible :(

DavidPostill

@Bob lol - I thought for a moment you were referring to the link I just posted ;)

kiran bbnl

even i was wondering

:-O

Journeyman Geek

09:14

@kiranbbnl which is why this is a terrible way to get help

This chat room tends to meander a lot. Discussion works. Random questions may get lost.

@Bob trying to work out the desolator one.

Those damned kirovs

Bob

09:30

@JourneymanGeek Oh that one was easy enough :P

Protip: spy + multigunner is one hit on any infantry

Journeyman Geek

@Bob infantry is fine.

Kirovs!

Bob

Also, I recommend harbingers (as always)

Rahul Basu

    command [h|l|m] [file path] {f|g}

Bob

avoid ground with that radioactive wasteland :P

Rahul Basu

^^ what does the stuff in the curly brackets mean?

Journeyman Geek

09:31

@Bob the harbingers would be good for that

backed up with fighters cause of those damned migs

HackToHell

whoa anandtech.com/show/10288/…

@kiranbbnl check the ufw doc

and yes you can

Journeyman Geek

lol

@HackToHell we were talking about it this morning.

HackToHell

ah I missed it

So my phone is one of a kind now ^_^

And ... I'll probably not get updates

I wonder if I series can be used in tablets

Okay it's still sad

Journeyman Geek

@HackToHell I'm curious what it means for the X-trail celerions

since quite a lot of my cheap and cheerful systems run em

sounds a lot like they're just killing off the SoFIA derivatives

(different team, based here actually)

HackToHell

yeah, too bad :/

And AMD is going off on an tangent as well

Bob

09:44

@HackToHell At least you picked the good source.

Journeyman Geek

@HackToHell AMD's kinda the new IBM

they seem to be doing really well on the console market

Hopefully zen's a success

DavidPostill

@RahulBasu Context? Source?

Which command? Which help file?

djsmiley2k

the curly brackets normally mean it's optional

HackToHell

10:03

whoa techcrunch.com/2013/03/21/…

@Bob from HN :D

@JourneymanGeek yeah

Journeyman Geek

@HackToHell " Mar 21, 2013"

HackToHell

Yeah, still whoa

Got linked in from somewhere

No idea how I opened it

But that's a whoa story :D

Journeyman Geek

It is

quite honestly a "hey. not cool" would have been a good start

djsmiley2k

i can't help but feel in these situations sometimes it's a 'oh, thats a good reason for us to get rid of xxx...'

It's funny how she's all like 'stand up for women!'

then instead of saynig something to the guy

she snaps a photo, reports him, gets him fired...

Journeyman Geek

@djsmiley2k I think she sort of didn't expect it to blow up that much.

djsmiley2k

10:07

if i took a photo of a woman, i'd get arrested for stalking etc

hmmmm

Journeyman Geek

Lots of people want to "Start a conversation" without actually wanting to listen.

djsmiley2k

but she's a 'social media something something'

Journeyman Geek

@djsmiley2k so basically a PR person

djsmiley2k

and yet she didn't see this coming?

XD

holy crap i got good at my job accidently!

Journeyman Geek

@djsmiley2k Apparently not

djsmiley2k

10:09

with the numerous times this kinda thing has happened

kiran bbnl

@JourneymanGeek pardon..?

Journeyman Geek

@kiranbbnl essentially this specific chatroom is mostly 'general' chat

so we get sidetracked a lot

@djsmiley2k I'm not saying she was totally wrong

kiran bbnl

yeah.... 'general' right...?

Journeyman Geek

But tweeting about everything...

@kiranbbnl see humourous list of acceptable topics off to the right ;p

This place works better as a sounding board than a "hey I need an answer now before all hell breaks loose" place.

djsmiley2k

if someone is offended, I'd hope they have the guts to say so to me

Journeyman Geek

10:11

@djsmiley2k precisely!

djsmiley2k

if you're gonna slink off and say it else where, it shouldn't have any repercusion on me unless it's highly offensive on a large scale.

(such as ken livingston and hitler comments...)

She thought 'oh cool some free PR'

Journeyman Geek

"Hey, I couldn't help but noticing you guys joking about dongles. I feel a uncomfortable about this"

djsmiley2k

sure

the thing is, even most guys are sensible/sensative to this kinda thing now

Journeyman Geek

@djsmiley2k and seemingly thinking it helps women in tech.

kiran bbnl

ennaa mairokkeyaadaa pooranmare ee kona konaannu konaykkunne

djsmiley2k

10:13

if people really felt it was bad, others in the audience would of likely also said something/given them a look

Journeyman Geek

@kiranbbnl english is the language of this channel.

kiran bbnl

paricha koothaali kundan thaayolikale..enikkoru poorum manassilaakunnilladaa thalleyoli

oops

djsmiley2k

It sounded like lion king to me

Journeyman Geek

Sounds south indianish

but not one of the languages I can roughly grok

kiran bbnl

haha...maybe u r right

the same

Journeyman Geek

10:15

That rules out tamil. I'm leaning towards telungu or kannada.

kiran bbnl

oh..u know all these?

which country

Journeyman Geek

@kiranbbnl anyway, stick to english here

@kiranbbnl I don't know either of those.

kiran bbnl

yeh

Journeyman Geek

I'm tamil speaking.

kiran bbnl

okay

tamil solla theriyumaa...?

sonnaa purinjiduma..?'

Journeyman Geek

10:16

Yeah

type adikathuthaan kashtam. Android nalla keyboard. Windows serila.

;p

I can speak, read or write. Typing properly is a pain

kiran bbnl

appadiyaa...? tamila malayalam maathiriye thaan

Journeyman Geek

Its very similar

kiran bbnl

appo yaen puriyale?

Journeyman Geek

(stick to english. No one else here except one or two people get it)

If its what you typed earlier? The transliteration is terrible.

And at this point, no matter how proud I am of my mothertongue, I need to stand on principle and type in english.

Bob

@djsmiley2k No, that's what square brackets mean. Curly braces... don't think I've seen em before.

kiran bbnl

10:19

thats right

Rahul Basu

@DavidPostill http://f2ko.de/en/cmd.php
some of them have it

jokerdino

yeah, no idea what half of what was typed above.

Journeyman Geek

lol

good. So it was not just me.

jokerdino

could have been malayalam

Journeyman Geek

Yeah, which I don't speak ;p

I comprehend many indian, and sri lankan dialects of tamil

but yanno, singapore.

jokerdino

10:31

only thing I figured was he was mad no one was answering his question.

Journeyman Geek

;p

2 hours ago, by Journeyman Geek

If it is urgent, you really ought not to be asking in an unfamiliar chat room

Hence me starting with that

jokerdino

he also was asking for help in AU chat.. hmm

Rahul Basu

10:54

!!\/s*

ChatBot John Cavil

@RahulBasu woo

Rahul Basu

what? why does this command even exist??

Bob

!!info \/s*

Rahul Basu

!!;)

ChatBot John Cavil

@Bob That didn't make much sense. Maybe you meant: info, undo

@Bob Command \/s*, created by Jimmy Hoffa on Tue, 14 Jan 2014 18:59:47 GMT

Rahul Basu

10:56

!!trololol

ChatBot John Cavil

Journeyman Geek

!!;p

ChatBot John Cavil

Journeyman Geek

hm

!!:p

ChatBot John Cavil

@JourneymanGeek That didn't make much sense. Maybe you meant: ;p

Journeyman Geek

10:58

wierd

Rahul Basu

!!networkingproblem

ChatBot John Cavil

@RahulBasu i.imgur.com/iNQrOPc.png

Rahul Basu

!!eval

ChatBot John Cavil

@RahulBasu "undefined"

Bob

11:24

lol

@JourneymanGeek files.ozbargain.com.au/upload/176185/38996/image.jpeg

Psycogeek

Hmm, it does not look like anyone has ever asked that.
This new computer (finnaly got it in place) doesn't seem to Idle enough
New to IGPU , i am wondering if the gpu keeps the "frequency" up on the cpu
Or if it is only about the (ms un needed) stuff I have not yet turned all off

Journeyman Geek

@Bob I think the pinkness is responsible

Bob

@JourneymanGeek I'm considering seeing if I can find any at the local target tomorrow :P

can't have enough spare keyboards

Journeyman Geek

@Bob and then built an emojo keyboard

Bob

@JourneymanGeek huh?

Journeyman Geek

11:34

Real Life Emoji Keyboard!

►

Psycogeek

@Bob for some time a peron could get a keyboard for "free" every 2 weeks or so, via sales for $5 & $10 keyboards with $5 &10 rebates.

Bob

@Psycogeek never seen a rebate on a keyboard

Psycogeek

Not one of them was worth 5 :-)

Bob

@JourneymanGeek I wonder how they got different keyboards to input different keys.

Sounds like a custom driver.

Journeyman Geek

The market for people wanting a pink keyboard for very little money is small.

Bob

11:36

...levitating man in a business suit

wtf emojis

Journeyman Geek

@Bob youtube.com/watch?v=lIFE7h3m40U HID macros + AHK

Bob

@JourneymanGeek Heh. I like this guy.

Get the important stuff done properly, bodge the rest :D

Which reminds me I need to set up daily backups again.

Psycogeek

3

A: Why is the CPU frequency always very high on my system?

Found the solution! The culprit was the Intel Graphics driver! I've updated it to the latest version several weeks ago. Uninstalling the driver solved the problem right away (even without a reboot)! I've then installed the old gfx driver offered by Windows Update and the problem remains still sol...

hmmm. that and IRST , both of them not really important in this case other than simple drivers

Developer

12:11

hi

@JourneymanGeek are you in every room ? lol

Journeyman Geek

Nope

Ell

12:26

Hi folks

Developer

hi

0

Q: DiskToVhd generated VHD is not bootable

I had windows 10 laptop, I used disk2VHD to convert disk into VHD. Now I am trying to mount it to virtual box on another machine, but it seems be not booting. I used windows 10 ISO and through CMD I think non of my partition has property bootdisk = yes. Please guide, how can I convert this VHD ...

vhd

Psycogeek

well changing the driver did not work, seems to be pretty much the same driver now.

Stop the computer I want to get off :-)

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