Long rant ahead. Should take about 2-3 minutes to read. So feel free to refill your cup of coffee and take a seat :)

It turns out that the battery in my new Nexus 6P is almost dead. Well not that I didn't expect that, the seller even explicitly put that in the product page. But it got me thinking.. why? Lithium batteries are often good for some 10k charges, meaning that they could last almost 30 years when charged every day! They'd outlive an entire generation of people!

Then I took a look at the USB-C wall charger that Huawei delivered with this thing. A 5V 3A brick. When I saw that, I immediately realized.. aah, that's why this battery crapped out after a mere 2 years.

See, while batteries are often advertised as capable of several amps (like 7A with my LiitoKala 18650 batteries that I often use in projects), that's only the current that they can safely take or deliver without blowing up. The manufacturer doesn't make this current rating with longevity in mind. It's the absolute maximum in current that a given battery can safely handle.

The longevity on the other hand directly depends on the demand that's placed on the battery. 500mA which is standard USB 2.0 rating or 1A which is standard USB 3.0 rating, no sweat. The battery will live for at least a decade of daily charges and discharges like that no problem.

But when you start shoving 3A continuous into a battery, that's when it will suffer. Imagine that your current workload is 500mA and suddenly you get shoved 6 times that work upon you. How long would you last?

Oh and not only the current is a problem, I suspect that it also overvolts the battery to maintain a constant current all the way till the end. When I charged my lithium cells with my lab bench power supply, the battery would only take a few milliamps when it got close to the supply voltage. Quick bit of knowledge: lithium cells are charged at constant current first, then when the current drops below that, it continues at constant voltage - usually 4.2 or 4.35V depending on the battery. So you'd set your lab bench power supply at 4.2V 500mA. But in that constant voltage mode, as the battery's voltage and the supply's voltage equalize, the current drops because the voltage difference becomes lower. Remember, voltage is what causes current to flow. Overvolting at the supply to stay in constant current mode all the way till the end speeds this process up but can be dangerous and requires constant monitoring of the battery voltage.

So, why does Huawei and a bunch of other manufacturers make these 3A power chargers? Well first it's because consumer demands ever more, regardless of the fact that they can just charge at 500mA for the night (8h of sleep) and charge a 4000mAh battery from 0 to 100% no problem. Secondly it's because sometimes you need that little bit of extra juice fast, like when you forgot to plug the damn thing in and you've got only 30 minutes in the morning to pour some charge into it.

But people use those damn fucking things even when they go to bed, making that 3A torture a fucking standard process!! And then they complain that their batteries go to shit?!

Hopefully this now made you realize that the fast charger shouldn't be used as a regular charger ^^

Gahaa!!! Finally back home, after 7 fucking hours of sitting in busses and trains!

BUT I GOT MY NEXUS 6P!! Yoo-hoo!!! :D

And I've got a nice story about it.

So when I bought it, the guy selling it to me was a nontechnical type (I think?) whose wife was the previous owner. So I thought to myself, cool a nontechnical user used it.. probably no hardware mods or anything to worry about. Apparently they even factory reset it for me :)

Now, when I left to go back home, I of course immediately booted up the thing and did the whole doodad of logging into it, setting up the device etc.

Then it struck me. When I booted up the device and wanted to log in, there was a lock from Google that required me to first authenticate as either a previous account of the device, or their unlock pattern. So I figured, eh fuck it, I'll just flash some AOSP without GApps or send the owner an email asking what the previous pattern is.

But I still had to wait 30 minutes at the bus stop so I thought to myself.. previous owner was a nontechnical woman.. maybe I could crack it. No way to know if I don't try. So I started putting in random unlock patterns.

3 attempts later - I shit you not! - pattern accepted.
Do you want to add this account?

Oh boy Google, of course I do! Thanks for letting me in pal!

3 fucking attempts. That's all it took to crack the unlock pattern of an unknown person. 😎

It's here 😀 Now I can resume testing my projects peacefully on real device instead of that crashing Android emulator. I still miss my Nexus 6P.

TL;DR: check polarity before plugging your DIY circuits into others!!!

*goes off to watch some Lucky Star and drink some booze*
*notices phone battery dying after 3rd pint*

But my charging cable that Huawei delivered with this thing is way too short... Well that ain't no problem, I can make one of my own 😎

But I'm tipsy.. sound I really enter the workbench in this state?

*goes off to build a charging cable anyway*
But what was USB-A male connector's polarity again? Oh, there's the fan's USB connector that I've made in the past. Let's check on that one. So, left is positive and right is negative?

*solders the wires on*
Snip, strip, stick, done! Well that was easy. I guess that all those failed soldering attempts and lost pads in the past as a means of training did pay off in the end!

*plugs phone into Raspberry Pi media center through new charging cable*

Strange sounds coming from the speakers.. well that's odd. Reverse polarity or maybe the Pi can't handle a 1A load from my phone?

*plugs phone into the 5V 5A charging hub that I've made earlier*
That oughta do.. current limits should be no more in that thing.

*charging hub makes high-pitch noise similar to the Pi speakers*
Definitely a reverse polarity, isn't it :') let's check on the Gargler...
Oh shit! It is a reverse polarity mistake!!! Should've checked this earlier >_<

*resolders wires properly*
Alright, finally done.. as I'm writing this post, my phone's charging from the Raspberry Pi through my fixed charging cable now...

Lesson learned. Always check on the internet what the pinout is before soldering anything, don't solder while tipsy, and be fucking grateful that this phone has reverse polarity protection in it.

Nexus 6P with all its shortcomings regarding power delivery and battery management, luckily it's got reverse voltage protection features built-in. Otherwise it might've costed me my phone. Always double-check before plugging anything into something else!!!

Just today I noticed how Android Oreo (8.1) on my Nexus 6P can actually see my Bluetooth headset's remaining battery capacity. I didn't even know that my headset could send out this information! Windows never presented this information to me, and neither did my tablet which runs Nougat 7.0. Apparently there's multiple implementations of that battery level reporting too.. so lack of support in Microsoft's driver makes sense. Especially given that the Bluetooth standard already counts several thousands of pages. Compare that to Wi-Fi which is far more complex (with - some of - its 7 OSI layers, 2.4GHz and 5GHz frequencies, MIMO etc) which counts only 400-ish pages. I'm surprised that Google actually supports this Bluetooth battery reporting at all.. implementing all the standards must've been quite the chore.

TL; DR: Bluetooth is an overengineered piece of shit, and is in dire need of refactoring.

*wondered for 4 years how a bootloop looks like*
Nexus: yOU wAnE kNoW wHaT a BoOtLoOp LoOkS LiKe?!

*bootloops itself to shit*

Well I guess that I know what I'll be doing tonight then. Flash that new StatixOS build because the phone shat itself.

*tries to reflash the recovery*
*still bootloops*
*tries to flash the stock OS*
*still fucking bootloops*
*finds a post on XDA saying something about fucked big cores that need to be disabled*

Fucking piece of junk. So not only the battery is shit, but also the CPU is shit, huh. Certified pieces of shit.

*flashes the patched boot.img that disables the big cores*
*phone loads Google logo.. good*
*BOOTLOOPS FUCKING AGAIN*

MJHUIETHNIUBESZPTUIBG ESVGU d

FUCK!!! Fuck you Google, fuck you Nexus, fuck you Huawei, HOW DIFFICULT CAN IT BE TO DESIGN A FUCKING PHONE?!!!

So yeah. Looking for suggestions for a new phone. Anything of which the kernel source is released and of which the battery is halfway decent (unlike this fucking piece of shit) should do.

My Nexus 6P died yesterday..
A new battery that I ordered for it months ago, arrived.. today.
4700mAh. If only I could've tested it.

This feels so much like it was just to rub it in a little bit further that that Nexus is gone forever.. just before I could fix the first shitstain, the second one occurred already... Fuck me :')

I love my Nexus 6P but goddamn do I hate its battery. Shuts down randomly at 25%, lasts only half a day, and a lot of other crap. So I want to replace it, bought a new battery from AliExpress but didn't buy any tools for it.. so I'll have to make do with what I currently have. On iFixit I found that the replacement process is apparently quite difficult as it's glued in (God I fucking hate that) and can only be safely removed by heatgunning it (which I don't have a heatgun for). Are the results worth the risk of breaking it? Is it possible to pull it out while cold, without too much risk of breaking stuff or damaging the battery? I've got experience in disassembling 2 previous phones and one of them had the battery glued in as well.. and I didn't break the battery (in fact I'm still using it) but it was very difficult.. and this is my daily driver. So yeah 😶

I've recently received another invitation to Google's Foobar challenges.

A while ago someone here on devRant (which I believe works at Google, and whose support I deeply appreciate) sent me a couple of links to it too. Unfortunately back then I didn't take the time to learn the programming languages (Python or Java) that Google requires for these challenges. This time I'm putting everything on Python, as it's the easiest language to learn when coming from Bash.

But at the end of the day.. I am a sysadmin, not a developer. I don't know a single thing about either of these languages. Yet I can't take these challenges as the sysadmin I am. Instead, I have to learn a new language which chances are I'll never need again outside of some HR dickhead's interview with lateral thinking questions and whiteboard programming, probably prohibited from using Google search like every sane programmer and/or sysadmin would for practical challenges that actually occur in real life.

I don't want to do that. Google is a once in a lifetime opportunity, I get that. Many people would probably even steal that foobar link from me if they could. But I don't think that for me it's the right thing to do. Google has made a serious difference by actually challenging developers with practical scenarios, and that's vastly superior to whatever a HR person at any other company could cobble together for an interview. But there's one thing that they don't seem to realize. A company like Google consists of more than just developers. Not only that, it probably consists - even within their developer circles - of more than just Python and Java developers. If any company would know about languages that are more optimized such as C, it would be Google that has to leverage this performance in order to be able to deliver their services.

I'll be frank here. Foobar has its own issues that I don't like. But if Google were a nice company, I'd go for it all the way nonetheless - after all, they are arguably the single biggest tech company in the world, and the tech industry itself is one of the biggest ones in the world nowadays. It's safe to say that there's likely no opportunity like working at Google. But I don't think it's the right thing. Even if I did know Python or Java... Even if I did. I don't like Google's business decisions.

I've recently flashed my OnePlus 6T with LineageOS. It's now completely Google-free, except for a stock Yalp account (that I'm too afraid to replace with my actual Google account because oh dear, third-party app stores, oh dear that could damage our business and has to be made highly illegal!1!). My contacts on that phone are are all gone. They're all stored on a Google server somewhere (except for some like @linuxxx' that I consciously stored on device storage and thus lost a while back), waiting for me to log back in and sync them back. I've never asked for this. If Google explicitly told me that they'd sync all my contacts to my Google account and offer feasible alternatives, I'd probably given more priority to building a CalDAV and CardDAV server of my own. Because I do have the skills and desire to maintain that myself. I don't want Google to do this for me.

Move fast and break things. I've even got a special Termux script on my home screen, aptly named Unfuck-Google-Play. Every other day I have to use it. Google Search. When I open it on my Nexus 6P, which was Google's foray into hardware and in which they failed quite spectacularly - I've even almost bent and killed it tonight, after cursing at that piece of shit every goddamn day - the Google app opens, I type some text into it.. and then it just jumps back to the beginning of whatever I was typing. A preloader of sorts. The app is a fucking web page parser, or heck probably even just an API parser. How does that in any way justify such shitty preloaders? How does that in any way justify such crappy performance on anything but the most recent flagships? I could go on about this all day... I used to run modern Linux on a 15 year old laptop, smoothly. So don't you Google tell me that a - probably trillion dollar - company can't do that shit right. When there's (commercialized) community projects like DuckDuckGo that do things a million times better than you do - yet they can't compete with you due to your shit being preloaded on every phone and tablet and impossible to remove without rooting - that you Google can't do that and a lot more. You've got fucking Google Assistant for fucks sake! Yet you can't make a decent search app - the goddamn thing that your company started with in the first place!?

I'm sorry. I'd love to work at Google and taste the diversity that this company has to offer. But there's *a lot* wrong with it at the business end too. That is something that - in that state - I don't think I want to contribute to, despite it being pretty much a lottery ticket that I've been fortunate enough to draw twice.

Maybe I should just start my own company.

I've been swapping through a couple of ROM's recently for my Nexus 6P but I don't really like any of them a whole lot.. so I've been thinking to build my own from source. However I'd also like to discard Google while I'm at it, and instead go with F-droid, DuckDuckGo, and AOSP keyboard. The problem is that I currently don't see any viable alternatives to the following: Google Assistant, Google Play Services (particularly in-app purchases like those for devRant), Google Maps and Google Calendar. Which alternatives would you recommend, and which are you perhaps using yourself as alternatives? Thanks!

I haven't ranted for today, but I figured that I'd post a summary.
A public diary of sorts.. devRant is amazing, it even allows me to post the stuff that I'd otherwise put on a piece of paper and probably discard over time. And with keyboard support at that <3

Today has been a productive day for me. Laptop got restored with a "pacman -Syu" over a Bluetooth mobile data tethering from my phone, said phone got upgraded to an unofficial Android 9 (Pie) thanks to a comment from @undef, etc.

I've also made myself a reliable USB extension cord to be able to extend the 20-30cm USB-A male to USB-C male cord that Huawei delivered with my Nexus 6P. The USB-C to USB-C cord that allows for fast charging is unreliable.. ordered some USB-C plugs for that, in order to make some high power wire with that when they arrive.

So that plug I've made.. USB-A male to USB-A female, in which my short USB-C to USB-A wire can plug in. It's a 1M wire, with 18AWG wire for its power lines and 28AWG wires for its data lines. The 18AWG power lines can carry up to 10A of current, while the 28AWG lines can carry up to 1A. All wires were made into 1M pieces. These resulted in a very low impedance path for all of them, my multimeter measured no more than 200 milliohms across them, though I'll have to verify and finetune that on my oscilloscope with 4-wire measurement.

So the wire was good. Easy too, I just had to look up the pinout and replicate that on the male part.

That's where the rant part comes in.. in fact I've got quite uncomfortable with sentences that don't include at least one swear word at this point. All hail to devRant for allowing me to put them out there without guilt.. it changed my very mind <3

Microshaft WanBLowS.

I've tried to plug my DIY extension cord into it, and plugged my phone and some USB stick into it of which I've completely forgot the filesystem. Windows certainly doesn't support it.. turns out that it was LUKS. More about that later.

Windows returned that it didn't support either of them, due to "malfunctioning at the USB device". So I went ahead and plugged in my phone directly.. works without a problem. Then I went ahead and troubleshooted the wire I've just made with a multimeter, to check for shorts.. none at all.

At that point I suspected that WanBLowS was the issue, so I booted up my (at the time) problematic Arch laptop and did the exact same thing there, testing that USB stick and my phone there by plugging it through the extension wire. Shit just worked like that. The USB stick was a LUKS medium and apparently a clone of my SanDisk rootfs that I'm storing my Arch Linux on my laptop at at the time.. an unfinished migration project (SanDisk is unstable, my other DM sticks are quite stable). The USB stick consumed about 20mA so no big deal for any USB controller. The phone consumed about 500mA (which is standard USB 2.0 so no surprise) and worked fine as well.. although the HP laptop dropped the voltage to ~4.8V like that, unlike 5.1V which is nominal for USB. Still worked without a problem.

So clearly Windows is the problem here, and this provides me one more reason to hate that piece of shit OS. Windows lovers may say that it's an issue with my particular hardware, which maybe it is. I've done the Windows plugging solely through a USB 3.0 hub, which was plugged into a USB 3.0 port on the host. Now USB 3.0 is supposed to be able to carry up to 1A rather than 500mA, so I expect all the components in there to be beefier. I've also tested the hub as part of a review, and it can carry about 1A no problem, although it seems like its supply lines aren't shorted to VCC on the host, like a sensible hub would. Instead I suspect that it's going through the hub's controller.

Regardless, this is clearly a bad design. One of the USB data lines is biased to ~3.3V if memory serves me right, while the other is biased to 300mV. The latter could impose a problem.. but again, the current path was of a very low impedance of 200milliohms at most. Meanwhile the direct connection that omits the ~200ohm extension wire worked just fine. Even 300mV wouldn't degrade significantly over such a resistance. So this is most likely a Windows problem.

That aside, the extension cord works fine in Linux. So I've used that as a charging connection while upgrading my Arch laptop (which as you may know has internet issues at the time) over Bluetooth, through a shared BNEP connection (Bluetooth tethering) from my phone. Mobile data since I didn't set up my WiFi in this new Pie ROM yet. Worked fine, fixed my WiFi. Currently it's back in my network as my fully-fledged development host. So that way I'll be able to work again on @Floydian's LinkHub repository. My laptop's the only one who currently holds the private key for signing commits for git$(rm -rf ~/*)@nixmagic.com, hence why my development has been impeded. My tablet doesn't have them. Guess I'll commit somewhere tomorrow.

(looks like my rant is too long, continue in comments)

Oh GODDAMIT Nexus!!!

You gotta love it when you're in a hurry, unlock the fucking phone while it is plugged in to the goddamn charger, and the bloody thing just fucking shuts down because the battery is apparently empty. WHEN YOU HAVE A FUCKING 15 WATT CHARGING CABLE STUFFED UP YOUR BUTT?!!

You know Google, if I wanted an iPhone battery with tons of little "features", don't you think that I would've bought a fucking iPhone?!

I'm thinking of buying a Samsung Galaxy S7 as a replacement to my Nexus 6P.. from what I can tell, it ticks all the boxes.. nice battery (3000mAh), 5GHz Wi-Fi, octacore CPU, kernel source being available, QHD display... However, it being sold at €350 - and that only in the Netherlands - does introduce quite some hurdles. For anyone who's owned this device, how long did you own this device and did any issues show up, especially hardware-related ones? Last time I owned a Samsung device was with a Galaxy S3 Mini, which was a delight to use. Other than that I don't really have any experience with it.

Another thing that piqued my curiosity - I still have 3 Raspberry Pi's unused, as well as one LCD display (but without touch). It got me thinking, the only things that I really use my phones for on the go is for calling, texting and listening to music via Bluetooth. Perhaps a Raspberry Pi or even an Arduino could take care of that? The smart devices that I'd consume and produce most content on are my tablet and my PC anyway.

Any nexus 6p users are out there? I'm thinking of flashing a new rom because the performance is taking a big hit and battery life is becoming abysmal. Any recommendations for this particular phone?

I just wonder how many more cats there are

ZNC shenanigans yesterday...

So, yesterday in the midst a massive heat wave I went ahead, booze in hand, to install myself an IRC bouncer called ZNC. All goes well, it gets its own little container, VPN connection, own user, yada yada yada.. a nice configuration system-wise.

But then comes ZNC. Installed it a few times actually, and failed a fair few times too. Apparently Chrome and Firefox block port 6697 for ZNC's web interface outright. Firefox allows you to override it manually, Chrome flat out refuses to do anything with it. Thank you for this amazing level of protection Google. I didn't notice a thing. Thank you so much for treating me like a goddamn user. You know Google, it felt a lot like those plastic nightmares in electronics, ultrasonic welding, gluing shit in (oh that reminds me of the Nexus 6P, but let's not go there).. Google, you are amazing. Best billion dollar company I've ever seen. Anyway.

So I installed ZNC, moved the client to bouncer connection to port 8080 eventually, and it somewhat worked. Though apparently ZNC in its infinite wisdom does both web interface and IRC itself on the same port. How they do it, no idea. But somehow they do.

And now comes the good part.. configuration of this complete and utter piece of shit, ZNC. So I added my Freenode username, password, yada yada yada.. turns out that ZNC in its infinite wisdom puts the password on the stdout. Reminded me a lot about my ISP sending me my password via postal mail. You know, it's one thing that your application knows the plaintext password, but it's something else entirely to openly share that you do. If anything it tells them that something is seriously wrong but fuck! You don't put passwords on the goddamn stdout!

But it doesn't end there. The default configuration it did for Freenode was a server password. Now, you can usually use 3 ways to authenticate, each with their advantages and disadvantages. These are server password, SASL and NickServ. SASL is widely regarded to be the best option and if it's supported by the IRC server, that's what everyone should use. Server password and NickServ are pretty much fallback.

So, plaintext password, default server password instead of SASL, what else.. oh, yeah. ZNC would be a server, right. Something that runs pretty much forever, 24/7. So you'd probably expect there to be a systemd unit for it... Except, nope, there isn't. The ZNC project recommends that you launch it from the crontab. Let that sink in for a moment.. the fucking crontab. For initializing services. My whole life as a sysadmin was a lie. Cron is now an init system.

Fortunately that's about all I recall to be wrong with this thing. But there's a few things that I really want to tell any greenhorn developers out there... Always look at best practices. Never take shortcuts. The right way is going to be the best way 99% of the time. That way you don't have to go back and fix it. Do your app modularly so that a fix can be done quickly and easily. Store passwords securely and if you can't, let the user know and offer alternatives. Don't put it on the stdout. Always assume that your users will go with default options when in doubt. I love tweaking but defaults should always be sane ones.

One more thing that's mostly a jab. The ZNC software is hosted on a .in domain, which would.. quite honestly.. explain a lot. Is India becoming the next Chinese manufacturers for software? Except that in India the internet access is not restricted despite their civilization perhaps not being fully ready for it yet. India, develop and develop properly. It will take a while but you'll get there. But please don't put atrocities like this into the world. Lastly, I know it's hard and I've been there with my own distribution project too. Accept feedback. It's rough, but it is valuable. Listen to the people that criticize your project.

FINALLY JOINED THE ANDROID TRAIN. Thanks to @n3xus for the Nexus 6P.

after having a pretty bad experience with nougat and the android O beta on my nexus 6p I've decided to try a custom rom again. went for pure nexus and now my phone is blazzing fast again :) pretty amazed by the progress this rom made in 1 year

Day 1/2 using windows phone.

Wish me luck my fellow debs, while my nexus 6P gets the camera glass replaced I'm stuck using windows 10 phone, this will be an interesting 2 days!

Have any other nexus 6P users experienced battery and performance issues when upgrading to android O?

I love this phone and I'm not ready to admit it may be on its way out.... Denial is bliss sometimes

Factory Reset my Nexus 6P, can't get Google Assistant -

So I was using the Android O Dev preview and decided the annoying things in it was just too much so I un-enrolled which reset my device, I'm now on Android N and have been for a week or two, everything's up to date and all but holding the home menu gives me the "Now on tap", I've cleared the Google app and services data/cache, swapped the language to English (US) and rebooted a few times but still nothing.

I'm not rooted and my bootloader is locked, I'm in Australia and had access to Google Assistant without any trickery before...

Not too sure what I'm missing and how to enable Assistant? So freaking annoying not having it and stuff, it was so useful and I miss it

Just bought a pixel XL 2 yesterday, upgrade from Nexus 6p. Love this new phone. The internet hype over the screen was so inaccurate!

My Samsung s6 just broke last week
tried to fix it, Nothing worked
which phone should i buy
Nexus 5x, Nexus 6p, Elephone P9000 or something else got anyone an idea?
my budget is around 250-300€ ± 25€

Audible notifications are not working for me, on Android 7.1.1 (Nexus 6P).