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Apple Pencils don’t draw straight on replaced iPad screens

arstechnica.com

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Re: Apple Pencils don’t draw straight on replaced iPad screens

#91

Post by djmips »

KennyBlanken wrote: post #24
dataflow wrote: post #2

Note: I slightly edited the title for accuracy. In particular, it appears "third-party replacement screens" doesn't refer to third-party-manufactured screens, but merely replacements performed by third parties using genuine Apple screens. And we simply know that they don't draw straight lines, not that they "can't". More reading: https://www.reddit.com/r/gadgets/comments/15cxwaa/apple_penc...

My god, the narrative. "Apple is doing this just to fuck with users, fuck apple" etc over and over despite zero evidence as to their intention here. One sane person comes up with the more likely explanation: > That implies to me the calibration is unique to each screen and a proper repair has a calibration setup step? And someone just dismisses that perfectly logical explanation completely out of hand, declaring 'all…

"all you have to do to restore original performance is replace the battery,"

hahaha like that's so easy! At least the EU seems to be heading towards fixing this specific issue - easy battery replacement will be mandatory.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#92

Post by numpad0 »

awesomeMilou wrote: post #32
JumpCrisscross wrote: post #15

Earlier quoted context omitted.

Serial numbers encode production-specific parameters. We don’t yet know how to produce uniform displays batch to batch. Running Toyota engine code on a Subaru will produce glitches without requiring any conspiracy.

But realistically this would mean I couldn't use an iPad with it's pen without connecting it to the internet first. I mean how would Apple bake every calibration for every display into all devices, even ones it hasn't even produced yet?

It's the display that needs calibration. Pen doesn't know where it is, the screen does. So each complete device or at least the screen needs to have a valid calibration table or a function for raw xy -> calibrated xy.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#93

Post by Too »

rasz wrote: post #86
klausa wrote: post #10

Earlier quoted context omitted.

Why would the calibration details need to account for all iPads sold? Just bake the one that the device is bonded with, using the display serial number as a lookup key. Then, if you change the serial number of the display, the lookup would fail, and fall back to whatever "default" values are.

and just be shear coincident two screens, the broken one and replacement, match calibration data completely?

Actually not that unlikely, imagine the allowed range of calibration is 0-100, the factory is likely to produce parts with small variance, but having same constant offset, resulting in output of screens between 70-80. While default in software might be set exactly in the middle at 50. Knowing how a large organization works, the default set in sw is probably not even close to what comes out of production lines, it's just an assumption some dev made that happened to work good enough on his desk 4 years ago.

Even if the screens would cover the whole spectrum, there is still a high chance this coincidence could happen, and more data would be needed to validate either theory. Is there any statistics showing that this happens all the time or just some times.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#94

Post by Zinu »

Miraste wrote: post #56
iudqnolq wrote: post #47

Earlier quoted context omitted.

The USB-c male connector is deliberately designed to break so that if you stress a plugged in setup you'll break the cable instead of the connector soldered into your phone, which is harder to repair. Maybe they misinterpreted that?

Notably, Lightning is designed to do the opposite. Whoops, the 1 cent connector broke, time for a new iPhone.

What do you mean? How can the connector in the phone break when it’s just a hole?

Re: Apple Pencils don’t draw straight on replaced iPad screens

#95

Post by [deleted] »

Miraste wrote: post #56
iudqnolq wrote: post #47

Earlier quoted context omitted.

The USB-c male connector is deliberately designed to break so that if you stress a plugged in setup you'll break the cable instead of the connector soldered into your phone, which is harder to repair. Maybe they misinterpreted that?

Notably, Lightning is designed to do the opposite. Whoops, the 1 cent connector broke, time for a new iPhone.

[deleted]

Re: Apple Pencils don’t draw straight on replaced iPad screens

#96

Post by KerrAvon »

Miraste wrote: post #56
iudqnolq wrote: post #47

Earlier quoted context omitted.

The USB-c male connector is deliberately designed to break so that if you stress a plugged in setup you'll break the cable instead of the connector soldered into your phone, which is harder to repair. Maybe they misinterpreted that?

Notably, Lightning is designed to do the opposite. Whoops, the 1 cent connector broke, time for a new iPhone.

I’ve had lots of USB mini/micro B ports do this on various devices (not C so far). I’ve never even heard of it happening to a Lightning port, and I’ve been through a lot of iDevices over the past decade.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#97

Post by KerrAvon »

Zinu wrote: post #94
Miraste wrote: post #56

Earlier quoted context omitted.

Notably, Lightning is designed to do the opposite. Whoops, the 1 cent connector broke, time for a new iPhone.

What do you mean? How can the connector in the phone break when it’s just a hole?

USB mini/micro B ports can break off the PC board when they’re not anchored solidly.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#98

Post by causality0 »

jeffbee wrote: post #45
anyfactor wrote: post #21

Tangential rant. Has tablet computer really improved since the last Google Nexus 7 tablet, which was released in 2013? Seriously, I was in the market for an affordable tablet, and quite bizarrely the tablet computers today have significantly underwhelming spec compared to a phone of the same price point. There is no budget tab from known manufacturers. Even at IPad level prices, the android counterpart is quite under…

The pencil is the differentiator. I would not get an iPad today if I could not use it for art. And it is amazing for art. I did have a Nexus 7 and it was great. I used it to hold my cached maps on motorcycle adventures. But these days you can get a "phone" that's practically as large as a Nexus 7 was, has way more storage, better battery life, and better performance. A Pixel 7 Pro has a display 80% as large as the Ne…

77.8% as large, if you include the curved edges. But considering the format of content, the useful area difference is larger. If you're watching a 16:9 youtube video, the Pixel 7 Pro only has 64% the screen area of the Nexus 7, and that's with treating the couple millimeters wrapped around the edges as valid surface.

Re: Apple Pencils don’t draw straight on replaced iPad screens

#99

Post by userbinator »

userbinator wrote: post #69

That looks like deliberate sabotage, and not merely a "the screen wasn't calibrated correctly" which I suspect Apple is going to try to spin this as, especially if using the existing controller with the new screen as the video claims causes this to be fixed. Watch the video - it's very short. More disturbing is the realisation that there are people working at Apple to implement stuff like this.

No counterarguments, just downvotes?

"Truth is found in the weeds" ;-)

Re: Apple Pencils don’t draw straight on replaced iPad screens

#100

Post by mixmastamyk »

cybwraith wrote: post #76
anyfactor wrote: post #21

Tangential rant. Has tablet computer really improved since the last Google Nexus 7 tablet, which was released in 2013? Seriously, I was in the market for an affordable tablet, and quite bizarrely the tablet computers today have significantly underwhelming spec compared to a phone of the same price point. There is no budget tab from known manufacturers. Even at IPad level prices, the android counterpart is quite under…

Biggest issue for me and why I stick with ipads is the 4:3(ish) aspect ratio. 16:10/16:9 is a terrible aspect ratio for tablets IMO.

16:9 is a terrible ratio for a computer, but a good one for a movie tablet.
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