Root Access

user285oo6

17:02

Hi all happy new year to one part of the world and advanced happy birthday to other who are yet to change the date.I have a question which is related to this

jokerdino

happy birthday?

Rahul2001

Human error

@user285oo6 ask away!

user285oo6

While listening to my playlist i press enter the track changes and so i get a notification but in the notification side bar at the right when i click that i keep getting history of tracks played again

Dog

@user285oo6 Umm what

@Rahul2001 zoom ftw

@Burgi cat

user285oo6

@Dog for example lets say im listening to Faded song by allen walker so iget a notification of the same,next i switch to heathens suicide squad i get that notification as well.The problem is that there's a notification shown in the side bar so i click that and again the notification of faded appears next heathens so on so forth.these historical notifications keep changing automatically

Dog

17:13

@user285oo6 It's new years everywhere already

user285oo6

@Dog ya but half part of the world celebrated already

Ben N

Yep, about 11 hours past it here

I hope y'all are enjoying 2017 so far

user285oo6

So is it a good question to be posted in su or its better answered here-This depends on the no of songs switched if I switch 12 songs then the history of 12 tracks keeps appearing automatically on clicking the notification

bwDraco

ve.ga

Mokubai

@user285oo6 It might be good to ask on SU, but you need to give more information. Firstly it's not clear if this is a desktop computer, laptop, tablet or what so that would be good to know. What operating system? What program are you using to play your playlist? What exact behaviour are you getting in a step-by-step fashion (your current description is unclear)? What behaviour do you want/expect?

@bwDraco You still harping on the AMD bandwagon? Everyone else abandoned them years ago... ;)

bwDraco

17:20

lol

Mokubai

They make console processors now...

bwDraco

I'm kinda tied to NVIDIA for graphics, but 100% willing to consider AMD for CPUs at this point.

user285oo6

@Mokubai its a win10 lappy

Mokubai

@bwDraco For performance on a budget I'd consider AMD, and probably recommend it to people who "just want to do stuff", but for actual performance I wouldn't touch them with a barge pole.

bwDraco

We'll see when the Ryzen processors are actually released.

Mokubai

17:23

@user285oo6 Fair enough, then ask away.

@bwDraco Problem is that it's taken them 5 years to catch up and just be ready to match current top-end processors. Chances are that Intel could release a new line up the week after that puts them back in the dirt...

Also they also probably found the absolute best chip they could to do competitive benchmarking with, they might have problems with yields for higher clock rates that makes it difficult to release the highest speeds.

Intel have their high-end chips pretty solidly in-market already.

I want the competitiveness as it'll drive the price of Intels high-end down, but I wait to be convinced.

Burgi

i like AMD...

well i liked ATI but AMD will have to do

i wonder if this lacie drive is USB 3

Mokubai

I like AMD/ATI, but I think it's going to be a lot of work to turnaround the market domination that Intel have.

Burgi

17:38

ugh

i went to close another tab but did cmd Q instead of cmd W

bwDraco

Over the last year, AMD did see some success capturing a nontrivial portion of the mainstream gaming market with the Polaris GPUs. We'll see if they can compete in the high end again with Vega.

Burgi

quick n00bish question...

why do CDs and DVDs fill up from the middle outwards?

djsmiley2k

17:53

@Burgi fastest access at centre

hdds do too

Rahul2001

@Burgi cuz there are different sizes?

This way the same drive will work

Burgi

@Rahul2001 that is a good point

djsmiley2k

no its not

Burgi

i prefer your answer though @djsmiley2k

djsmiley2k

sry, but its only logical

user285oo6

17:55

@Mokubai what should be the title Absurd notifcations of mp3 played or Repetitve notifications of mp3 files

Rahul2001

@djsmiley2k so is mine :/

XD

djsmiley2k

no, you'rs is ONLY logical, haha that's my point :D

why read from the center? because you know where it is

Rahul2001

Logic is love. Logic is life.

djsmiley2k

why write to the center first? because its fastest here

Burgi

@Rahul2001 when they invented them i don't think they planned for different sizes

djsmiley2k

17:56

hmmmmmmm i think the big red book did

or might be the black one

Burgi

i might ask it on the main site

Rahul2001

@Burgi there were different gramaphone record sizes also, I think

@Burgi you'll get a lot of rep from the question

bwDraco

You'll probably make it to HNQ :-)

Burgi

@Rahul2001 12" and 6"

djsmiley2k

Rainbow Books

The Rainbow Books are a collection of Compact Disc format specifications. == Red Book (1980) == CD-DA (Digital Audio) – standardized as IEC 60908 CD-Text – a 1996 extension to CD-DA CD+G (plus Graphics) – karaoke CD+EG / CD+XG (plus Extended Graphics) – an extension of CD+G == Green Book (1986) == CD-i (Interactive) == Yellow Book (1988) == CD-ROM (Read-Only Memory) – standardized as ECMA-130 and ISO/IEC 10149 CD-ROM XA (eXtended Architecture) – a 1991 extension of CD-ROM == Orange Book (1990) == Orange is a reference to the fact that red and yellow mix to orange. This correlates wi...

Burgi

17:58

but they go from the outside inwards

djsmiley2k

its all there

user285oo6

Question posted

djsmiley2k

dont do that @user285oo6

people will answer if they know

user285oo6

@djsmiley2k don't do what? oh the question i shared the link here for any more changes to be made if any

@djsmiley2k plz check if it's clear and provide any inputs for changes to be made

djsmiley2k

see, say that before posting the link :P

Burgi

18:05

0

Q: Why do CDs and DVDs fill up from the centre outwards?

I recently had to burn a DVD for the first time in ages and I was wondering why do CDs and DVDs fill up their data from the middle outwards. Previous disc based media like vinyl records went from the outside, towards the centre so it couldn't have been for historical reasons. I am looking for g...

shameless post

probably already DV'd and flagged as a dupe

Mokubai

@user285oo6 "absurd" is a rather useless subjective word, "repetitive" and perhaps "unwanted" gives more of an idea about the problem.

bwDraco

+1. Hard drives also write from the outside in.

djsmiley2k

Annnnnnnnnd I asnwered again

Burgi

@djsmiley2k don't make me edit your answer for spelling

djsmiley2k

hmmm did more research, i r wrong

sorry @Rahul2001 you win this one

bwDraco

18:12

I am drafting an answer. Hang on...

Rahul2001

@djsmiley2k XD

djsmiley2k

@Rahul2001 we will fight again young one :P

Burgi

he is young, has more women than us and is cleverer than us. is there a reason not to hate @Rahul2001?

3

Rahul2001

Lol

I'm not that sure about the cleverer part

Burgi

you have more rep than me

Rahul2001

18:20

Different sizes was the first thing that popped into my mind when I read you message though

@Burgi um, okay, that's true I suppose...

But probably because I ask and answer popular questions

Burgi

but they couldn't have known that when they made the first one

djsmiley2k

the size thing doesn't really make sense tho

Rahul2001

Kinda does, but yeah, couldn't have been the reason for filling up from the center

Burgi

this "mega-rep" has failed to materialise

meh

bwDraco

0

A: Why do CDs and DVDs fill up from the centre outwards?

This is intended to allow for discs of different sizes. The standard optical disc today is 12 cm in diameter. Historically, optical media have been produced in a wide variety of sizes; the LaserDiscs of the 1970s and 1980s were made in 30 cm, 20 cm, and 12 cm sizes. More recently, CDs, DVDs, and...

15 minutes late, but better explanation.

Burgi

18:42

damn good answer

Rahul2001

WHAT IS THIS I SHOULD HAVE ANSWERED I WAS RIGHT DAMNIT

Burgi

but counter to that is your point that HDD fill up from the outside in and they use a similar reading head that vinyl did

i'll leave the question open for a day or two

DavidPostill

@bwDraco And incorrect :)

@Rahul2001 You are wrong :)

0

A: Why do CDs and DVDs fill up from the centre outwards?

Why do CDs and DVDs fill up their data from the middle outwards? The other answers, which explain the reasoning is due to different disk sizes, are not entirely accurate. There is an exception to the rule, namely the XBox. Xbox games have the data written from the outside in for performance rea...

bwDraco

Updating the answer, hang on...

Rahul2001

@DavidPostill but... What's the actual reason for most? You only tell us the reason for the exception

DavidPostill

18:48

@Rahul2001 So? I'm pointing out an issue with the other answers - they are not entirely correct :)

Burgi

wow...

nooooo

DavidPostill

lol

Dog

!!caaaaaaat

ChatBot John Cavil

Rahul2001

@DavidPostill is that a proper answer though?

Burgi

18:49

i've fracking nuked another damn pendrive

Rahul2001

@Burgi how so?

Burgi

the MBR silliness of yesterday

bwDraco

I'm not too sure the answer is completely wrong...

Updated answer.

@DavidPostill: This doesn't make the answer fundamentally wrong. The question (incorrectly) assumes that all optical media are read inside-out, and the answer is based on this assumption.

DavidPostill

@Rahul2001 It's an answer. Maybe not a complete answer, but it's still an answer.

Rahul2001

Fair enough

DavidPostill

18:59

@Rahul2001 I've updated it to point out the inaccurate assumption in the question :)

Burgi

hmm...

Dog

19:14

Derp

Rahul2001

Goodnight! Long day tomorrow

Ben N

Good night

Dog

Australia built a big fence.

djsmiley2k

@DavidPostill you don't actually answer...

the exception exists because writing to the outside is faster, fair enough

but why do they by default write inside out?

tereško

@Dog now we know where Trump got the idea

Burgi

19:20

is 80 mile beach actually 80 miles long?

tereško

is AU too using the "dead king based" unit system?

Burgi

i think in general australia uses the metric system

Dog

@tereško problem is, Trump wants to keep out Mexicans, not rabbits

tereško

maybe he's trying to keep americans in :D

Burgi

he needs one across the two northern borders then

djsmiley2k

19:26

2?

Oh, russia?

and the skies

and seas

needs a dome.

Burgi

there are two borders with canada

tereško

Alaska should just make it their own country

djsmiley2k

@Burgi is there?

is it that small lake that seperates the two?

Burgi

main USA - canada and alaska - canada

djsmiley2k

hmmmmm

oh right

is alaska completely seperate? I've never looked closely

Burgi

19:28

yes

jokerdino

yes

djsmiley2k

:O

why is it not just a seperate country XD

jokerdino

hawaii is also separate

djsmiley2k

I know about hawaii

but that's by a sea

Burgi

the USA bought alaska from russia for 1billion USD

djsmiley2k

19:30

:O

jokerdino

I dont think it was that costly.

djsmiley2k

wqhy o_O

tereško

@jokerdino well. Hawaii was a separate country, before USA annexed it

djsmiley2k

Why would anyone ever buy something that spawned Sarah Palin o_O

jokerdino

How did Alaska become part of the United States?
The land that became Alaska came into U.S. possession in 1867, when William Seward, secretary of state under President Andrew Johnson, negotiated a deal to buy the 586,000-square-mile area from Russia for $7.2 million, less than 2 cents per acre.

That was before oil was a thing.

Burgi

19:31

yeah

@djsmiley2k they even paid by cheque: upload.wikimedia.org/wikipedia/commons/2/20/…

djsmiley2k

welp, he got a good deal

Burgi

i don't think the people at the time thought so

YAY! i went HNQ!!!!

djsmiley2k

hgah well hopefully we get a real answer

Burgi

honestly i expected @DavidPostill to just go "heres the reason complete with a million supporting links"

or "flagged as dupe"

djsmiley2k

19:47

And I think this is teh real answer 'Unlike on a DVD or CD-ROM, there are no "files" on a Red Book audio CD; there is only one continuous stream of LPCM audio data,'

imagine the seak time on a 20 minute long cd

you've got to seek through the 50 or so unused minutes first

how to avoid it? always start in the middle

Burgi

what is virtual super resolution?

djsmiley2k

a what?

Burgi

exactly

djsmiley2k

I know what a virtual resolution is

but not a super one :O

Burgi

it has an S on its chest

djsmiley2k

19:51

LOL

Burgi

there are some big fireworks being set off

bwDraco

@Burgi, congratulations: your question has indeed made it to Hot Network Questions

Burgi

20:07

thanks

btw your answer is the best one so far

i was just thinking, this macpple top is like the LEM in apollo 13

it does everything brilliantly other than landing on the moon

DavidPostill

20:30

@Burgi Answer updated.

afk - watching Sherlock :)

allquixotic

20:53

@Burgi supersampling basically. Original renders at higher res than your screen, then gets downsampled with a high quality resizing algorithm

Burgi

what is the point?

allquixotic

All current gen Mac products do it, and so do many iPhones depending on the application (in OpenGL/Metal you get the unadulterated raw framebuffer of the real screen)

@Burgi rendering the original at higher quality and then downsampling provides a sharper image than rendering at a lower quality originally

And by quality I mean resolution

Burgi

hmmm.... worth doing?

allquixotic

I've done tests and have screenshots in this channel of Star Citizen with my old GTX 980, both super sampled and not supersampled

Search for VSR or supersampling and you should be able to find it

Burgi

righto

allquixotic

20:56

I did the tests when my rig was a GTX 980 with a 1920x1080 screen

bwDraco

I'm envious :\

Hopefully, this new PC can happen soon

allquixotic

May 24 '16 at 5:36, by allquixotic

two 1080p renders from Star Citizen's hangar, very high quality, GTX 980:

Burgi

i've got quite old screens and for whatever reason this option has never been there before

allquixotic

May 24 '16 at 5:38, by allquixotic

still, if you look at the metal cockpit structural elements going diagonally across the screen, it's pretty obvious that the 4k image is much smoother... and that's not jpeg artifacts because the 1080p one is way worse

Burgi

until the reinstall

allquixotic

21:01

do you see the difference? the reduced jaggies?

it's clear on the hard edges of the cockpit in the screenshots there

it's kinda like, if you have a sound card with a native capture sample rate of 22050 Hz, and you record audio like that, it's going to sound noticeably worse than if you capture at a native rate of 44100 Hz and downsample to 22050 in post-processing

Burgi

yeah i understand

allquixotic

smart algorithms can retain some of the information from the "wider" resolution original when converting to a smaller format

bwDraco

I am still stuck with a 780M and the only thing I can do about it is overclock :\

Two generations behind and no upgrade path aside from replacing the whole laptop with a desktop *sigh*

allquixotic

@bwDraco well, I have a 980 and an i7-3770K and 32 gigs of RAM and a Z77 mobo and a case sitting downstairs in a corner because my dad is too lazy / too stubborn to figure out how to upgrade his system properly

but he's such a packrat that he won't let me sell it

Burgi

so say if i turn it on for my screens and my screen natively is 640x480 at 2x sampling the gfx card is actually rendering 1280x960?

allquixotic

21:08

it'll probably sit there and rot until it's either corroded or obsolete because he's too stupid to figure out how to take advantage of $1500 worth of hardware just sitting there that could be money in my pocket

and it's not like he's never built a PC before; we've been doing this - both of us - since I was a little kid

bwDraco

@allquixotic lol

allquixotic

@Burgi yeah, the GPU renders to a buffer in VRAM that's 1280x960 wide, then it applies a parallelizable rescaling algorithm on the GPU to quickly downsample it to 640x480 and writes that out to your GPU's front buffer (which gets copied by the firmware to your display controller, and the monitor)

bwDraco

This is the first time I am actually building a PC from scratch. I have installed and replaced computer parts before, but nothing more complicated than installing an AMD processor in a PGA-ZIF socket.

Burgi

@allquixotic does that put additional strain on the card? as it is having to worktwice as hard?

allquixotic

@Burgi that's where you're wrong; don't get tripped up by that... do the actual mathematics... multiply 640 by 480, then multiply 1280 by 960, and divide the two numbers you get out

Burgi

21:12

@bwDraco its easy, computers these days are just like lego. everything just slots together

allquixotic

1280x960 has four times the pixels of 640x480, so the GPU has to do four times more work

2

so yes, if you have a 1920x1080 "Full HD" monitor and you turn on 4K supersampling / VSR, your GPU is doing as much work as if you had a 4K monitor, which is four times more

Burgi

hmm...

allquixotic

so if your GPU gives you 48 FPS at 1920x1080, it'll give you 12 FPS at 4K

or you'll need four of your original GPUs in SLI and hope the SLI scaling works ideally (hint: it won't), or a GPU four times as powerful

bwDraco

@allquixotic Not necessarily. Some games scale better than others, and there are tricks to reduce the performance hit of higher resolutions.

Burgi

is it worth doing on older screens?

allquixotic

21:14

@bwDraco well yeah, there are "tricks" you can do, but most of those tricks involve a compromise in quality

bwDraco

@allquixotic If you have a 1080p display and a very powerful GPU, DSR is worth a shot.

allquixotic

generally speaking, as far as the problem is concerned, the most efficient an algorithm can be is linear, because it has to visit each pixel at least once

if you have an algorithm that's faster than linear, it's cutting corners on quality

and many algorithms are much slower than linear, meaning 4 times the resolution costs more than 4 times the compute time

bwDraco

@allquixotic The ROPs work four times as hard, but that does not mean the TMUs or shader cores are doing 4x the work.

allquixotic

@bwDraco if they're not, then you're not getting true 4K quality, like I said

think back to your Algorithms class in undergrad CS

don't think about individual algorithms; think about the problem space

if you have X number of pixels, how many pixels do you have to decide an individual color value for?

the answer is X, obviously, right?

so if you increase X by a multiple of 4, how many pixels do you have to decide an individual colorvalue for?

4X.

bwDraco

I understand computational complexity, but it isn't necessarily that simple. The computational complexity of mapping a texture to a bunch of polygons does not necessarily scale linearly with resolution. Actually rendering the output, sure.

allquixotic

21:19

okay, sure, there are clearly certain operations that can grow slower than linear when dealing with rendering.... as a trivial example, an algorithm to divide the screen in half... should be constant time, regardless of the number of pixels

but enough of the actual rendering task is linear or worse that the real-world performance requirements are pretty close to linear with the number of pixels

we're lucky it's only linear, because plenty of advanced DSP algorithms are slower than linear with trivial implementations; they've had to work very hard to reign those in back to linearish

bwDraco

Hmm...

Also, consider the role of the CPU and the draw calls it makes.

allquixotic

I guess it depends on the game, what types of rendering eye candy it does, and whether you hit a bottleneck in CPU or RAM or the PCIe bus before maxing out your shader cores

but at least with things like Star Citizen that are GPU bound for just about everybody, you get this nice linear scale of FPS vs. # of pixels

I definitely did with my GTX 980

bwDraco

Father's replacing his desktop soon and we expect to be getting a detachable laptop or a tablet (see hardwarerecs.stackexchange.com/q/6575) but other options are still on the table, including a low-cost desktop/laptop + tablet combination. If it is going to be a desktop, we may go down the custom building path.

I, on the other hand, will be building a new desktop soon, but the parts to be selected are not yet finalized (Kaby Lake or Zen?)

bwDraco

21:48

...and here we go. I'm getting a flood of upvotes.

Just over two hours left to hit the rep cap.

I knew right from the start that the question would hit HNQ.

4 hours ago, by bwDraco

You'll probably make it to HNQ :-)

Burgi

22:02

i won't hit rep cap

hehehe

bwDraco

...and I have just rep-capped.

DavidPostill

22:21

@bwDraco Congrats :)

@Burgi BTW Dual Layer DVDs may be (mostly are?) written in both directions - A movie will be split across across the layers, so no seek back to the inner edge is needed at the layer change.

Burgi

this gets more and more interesting

i don't think i've ever bought a dual layer DVD-R

DavidPostill

@Burgi So for historical reasons writing from the inside makes sense (different size disks) but for read performance reasons modern disks may be written outside in or in both directions. Note most disks are a standard size.

Burgi

nods

Dog

22:39

!! Caat

ChatBot John Cavil

Dog

Dual layer cat.

Burgi

halfway!

wow... i just realised something...

20 upvotes and no DVs

is this off-topic?

-2

Q: How should I store/backup the videos from my phone?

I realize there are many options. I would really like to know how other (super)users do it, but I can't even figure out good places to ask this question. Hopefull I will get some good responses here. Feel free to describe what you do, and to point at other resources. So...what do you do with th...

video

bwDraco

@Burgi It's an overly-broad opinion-based question and it primarily involves a phone (a PC is not integral to the question).

Burgi

i'm on a flag ban at the moment so i can't do anything

interestingly i can still flag comments

DavidPostill

22:59

@Burgi Another aside on your question. Commercially manufactured CDs and DVDs are not written at all - they are stamped.

The Difference Between Commercial and Home-recorded DVDs

Burgi

THATS A GOOD POINT
WTF>>>STICKYKEYS GRRRRRRRRRRRRRR

bwDraco

!!/tell 34493275 e_rofl

ChatBot John Cavil

@Burgi 🤣

Burgi

well that was annoying

the person who thought sticky keys were a good idea needs taking outside and shot

Psycogeek

Dog Mauls Owners After They Tried To Dress Him In Sweater huffingtonpost.com/entry/… Dont make this about "pitBulls" any dog could fight you when dealing with fassion accessories :-) just because the pitbull will WIN the fight

DavidPostill

23:12

@Burgi Flagged for discrimination against differently abled people ;)

Burgi

> Flying High Become intimate with an airship

steamcommunity.com/stats/381780/achievements

DavidPostill

@Burgi lol. That's a new one :)

bwDraco

I know it's a joke, but not everyone will interpret it as intended.

Burgi

hmmm?

sorry i missed what you typed

@bwDraco dirgiblephilia is not a joke

its real!

the love between a man and his blimp is sacred

DavidPostill

@Burgi He was referring to the comment I didn't flag ;)

About shooting someone ...

Burgi

23:27

hopefully not someone in a zepplin! ;)

speaking of flying high.... i wonder how my minion is getting on in amsterdam

btw with reference to the prosseco experiment yesterday.

it worked brilliantly especially when couple with the gift of a giant panda

DavidPostill

@Burgi lol. eats shoots leaves?

Burgi

@DavidPostill i... i didn't think of that joke...

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