Grey Panthers Savannah https://grey-panther.net Just another WordPress site Thu, 01 Jan 2026 16:11:59 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 206299117 MacOS Privacy https://grey-panther.net/2026/01/macos-privacy.html https://grey-panther.net/2026/01/macos-privacy.html#respond Thu, 01 Jan 2026 16:11:52 +0000 https://grey-panther.net/?p=1470

On the one hand it has some pretty nice security features, decent hardware (although the effort for disassembling / fixing is higher than other laptops – and the insistence of soldering memory / storage to the mainboard is also annoying).

On the other hand, when using LuLu (a very nice free and open source application firewall for MacOS), one can see that there are dozens of Apple processes which want to talk to the network and it’s hard to understand the purpose of each :(. It’s safe to assume that Apple has very detailed telemetry about each of their devices which is out there.

Well, at least there are the APIs to implement a firewall like LuLu.

PS. Since this is an older machine, I had to install AppTamer and TB Switcher to avoid overheating (yes, I also repasted the CPU/GPU), and, surprise surprise, one of the processes using the most CPU is “siriactionsd” even though I disabled every option related to Siri I could find. So, MacOS also has it’s own type of bloat, like Windows…

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USB-C (fast charging) shenanigans https://grey-panther.net/2025/12/usb-c-fast-charging-shenanigans.html https://grey-panther.net/2025/12/usb-c-fast-charging-shenanigans.html#respond Wed, 31 Dec 2025 15:51:12 +0000 https://grey-panther.net/?p=1467

It’s nice that more and more devices have USB-C interfaces. Yet, they are not without their particularities:

  • Not all chargers / cables are the same. They support different volts and amps, so, to support the fastest charging possible for your device (phone / laptop / tablet), make sure to select the right one.
    • In particular I was surprised that my phone wasn’t “fast charging” with several different laptop chargers I tried. Turns out (with the help of an USB voltage analyzer) that they were delivering 2 Amps at 9V and my phone was expecting 3 Amps for fast charging. Those (Dell / HP) laptop chargers were plenty powerful to deliver the total watts at higher voltages, but I guess 9V just wasn’t their priority.
    • Quick tip if you don’t want to poke around with USB analyzers for finding a good charger: look for something that has “fast charger” in the name and then test it with your equipment (hopefully you can still send it back if it doesn’t work for you). I had good experiences with the Fairphone chargers and with the UGreen chargers / cables.
  • USB-C is seemingly symmetric (ie. you can plug it in both ways and “it works”). That said, some cheap products / cables only implement half of the connections, so if something is not working, try rotating the cable 180° (↺) and see if that works.
    • That said, dust/lint buildup can also be a problem, here is a page on the iFixit forums discussing how to clean the ports.
  • You can have “USB-C” products which don’t work / don’t charge unless a USB-A to C cable is used (so they don’t work with a USB-C laptop charger for example for a USB-C to C cable). What’s that about?
    • USB-A always delivers a small amount of current at 5V when something gets plugged in (and then the device / source can negotiate higher voltages / amps if supported). USB-C in turn doesn’t output anything though, unless the consumer has some specific resistors. The “USB-C” (and I put USB-C in quotes here, since they can’t really claim to be an USB-C equipment, since they don’t conform to the spec) gadgets which only work with the A-to-C cables are missing these resistors, most probably because the manufacturer wanted to save a couple of cents (I’ve only seen this on cheap devices). Not much that can be done here, other than using the A-to-C cables 1

Happy charging!

Photo taken from Andreas G with permission.

  1. Yes, theoretically we could add the resistors if we have the time / equipment. Also, theoretically it would be easy to make some adapters / cables that have the resistors in them – I’m surprised that I haven’t seen anything like that. Although, I guess, they have a high risk of being used incorrectly, so maybe it’s better this way. ↩
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Adding your Google Calendar entries to the iOS calendar https://grey-panther.net/2025/12/adding-your-google-calendar-entries-to-the-ios-calendar.html https://grey-panther.net/2025/12/adding-your-google-calendar-entries-to-the-ios-calendar.html#respond Sat, 13 Dec 2025 07:37:24 +0000 https://grey-panther.net/?p=1462

Noting this here in the hopes that it will be useful for somebody (or even me :)) in the future, since it took me longer than I expected to figure this out.

Scenario: you have a Google account with entries in Google Calendar that you would like to see on your iOS device (iPad / iPhone). Some (well, many) sites suggests that you need to install Google Calendar on the device. This is in fact not necessary!

All you need to do is to link your Google account with the native iOS Calendar App by going to Settings > Apps > Calendar and under “Accounts” add your Google Account. È voilà! That’s all folks! Hat tip to this article for reminding me about the procedure.

PS. You might need to do an additional step for the shared calendars, as described by Scott Hanselmann here: go to https://www.google.com/calendar/syncselect and select the calendars you want to be sync-ed to the iOS devices. I’m not sure if this is needed, since I’ve done it several years ago and it was already enabled when I recently set up a new iOS device.

PS. PS. There is now a new option for ad blocking for iOS devices that is well worth considering: uBlock Origin Lite for iOS.

Image taken from John Davey’s Flickr album with permission.

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New option for adblocking on iOS https://grey-panther.net/2025/12/new-option-for-adblocking-on-ios.html https://grey-panther.net/2025/12/new-option-for-adblocking-on-ios.html#respond Fri, 12 Dec 2025 17:37:24 +0000 https://grey-panther.net/?p=1458

To start with: good ad blocking is the best one can do for their security / privacy online these days!

For a long time adblocking on iOS devices (iPad / iPhone) was limited. One could use DNS based blocking (Pi-Hole or NextDNS are good options), but many advertisement circumvent these blocks. There was AdBlockPlus which worked well, however:

  • I feel uneasy about the company behind it given past behaviour
  • Even today, when installing on iOS, ABP forces the user to activate their subscription for a 7 days free trial and then one has to dig through the settings to deactivate it – less one gets charged after the 7 days
    • For reference, the setting is under Settings > Apple Account > Subscriptions
  • Ad blocking extensions have full access to the content of the websites you’re visiting (by necessity – since they have to remove part of it). I’m not comfortable with giving this company access to everything I visit / type in to a browser.

There is the current gold standard in adblocking – UBlockOrigin – however it’s not available for Firefox under iOS due to some dubious practices of Apple (Apple makes it so that you can’t really install alternative browsers on iOS – all the “alternatives” are actually reskins of Safari – so Firefox for iOS can’t support the Firefox extensions, less it gets banned from the AppStore – hopefully the EU will look into this anti-competitive practice and make it end soon).

So, I was excited when I’ve learned that uBlock Origin Lite is available for iOS: https://apps.apple.com/us/app/ublock-origin-lite/id6745342698

Some thoughts:

  • first and foremost: it works well!
  • second: it’s free – although I would like to provide some support for the author, they don’t seem to be interested in it currently. So here I am at least spreading the news about it.
  • third: I trust this extension more since it has a long reputation of being trustworthy and it’s F/LOSS.
    • Sidenote: Apple doesn’t provide a way to verify that the source code published is the same as was used to build the binary in the AppStore like f-droid does for example – but maybe one day.
  • what I also liked: theoretically it also has a minimal mode which doesn’t require access to the current website (see my concerns above about this kind of software). Unfortunately that doesn’t seem to work on the websites I frequent, but maybe it could be used in some situations where higher situations are needed.

And the setup:

  • Install it from the AppStore
  • Open Settings. Navigate to Safari -> Extensions
  • Turn it on (optionally for private windows also)
  • To avoid constant prompting, set the websites to “allow all” (the last option on the page)

Enjoy a safer, more private and faster browsing!

Update: also, don’t forget to disable the Advertising ID on your devices. Here is an EFF tutorial about how to.

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Ripping BlueRays with Handbrake https://grey-panther.net/2025/11/ripping-bluerays-with-handbrake.html https://grey-panther.net/2025/11/ripping-bluerays-with-handbrake.html#respond Sun, 30 Nov 2025 14:27:19 +0000 https://grey-panther.net/?p=1452 (under GNU/Linux)

Noting this here because all the information I could find on the Interned told me “use MakeMKV for it”. And while MakeMKV seems like a fine product, it’s a bit harder to install, since it doesn’t seem to be packaged for Debian at least. I still gave Handbrake a try (since it is packaged for Debian) and lucky me, it turns out it does work with BlueRay disks.

Now, the following instructions are a bit fuzzy, since I used a bit of a round-about way to achieve this, but here is what I did:

  • Installed VLC (just from the repositories, nothing fancy)
  • Made sure that it could play BDs
    • It was giving the error “Missing AACS configuration file”. Luckily this askUbuntu answer pointed me in the right direction (and worked for Debian 13)
  • Once VLC could play back the BDs, turns out Handbrake could also read them!

Since this is short and sweet, here is an extra tip, courtesy of /r/linuxquestions: how to update the chapter names after encoding? Turns out ffmpeg can do it (què surprise :)):

$ ffmpeg -i movie.mp4 -f ffmetadata movie.metadata.txt
# edit movie.metadata.txt
$ ffmpeg -i movie.mp4 -i movie.metadata.txt -c copy -map_chapters 1 movie_out.mp4

(image taken from bluecinetech.co.uk with permission under a CC license)

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Mainboard photos of HP t630 https://grey-panther.net/2025/06/mainboard-photos-of-hp-t630.html https://grey-panther.net/2025/06/mainboard-photos-of-hp-t630.html#respond Sun, 22 Jun 2025 13:29:01 +0000 https://grey-panther.net/?p=1444 The wonderful parkytowers.me.uk website doesn’t detailed photos of both sides of the HP t630 thin client, so – in case this would be useful for anyone – here are some photos I’ve made:

It’s a very useful little fanless (!) machine. The DisplayPort outputs even support HDMI-CEC when connected to a TV, out of the box. Don’t forget to update the TPM chips if you get one of these nice machines.

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Debian booting on a Swiss train https://grey-panther.net/2025/06/debian-booting-on-a-swiss-train.html https://grey-panther.net/2025/06/debian-booting-on-a-swiss-train.html#respond Sat, 14 Jun 2025 17:57:38 +0000 https://grey-panther.net/?p=1440

It was fun to see 🙂

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Maximum memory for Lenovo Yoga 370 https://grey-panther.net/2025/04/maximum-memory-for-lenovo-yoga-370.html https://grey-panther.net/2025/04/maximum-memory-for-lenovo-yoga-370.html#respond Sun, 06 Apr 2025 12:13:20 +0000 https://grey-panther.net/?p=1433 (and the Asus Q170T)

I’ve picked up a Lenovo Yoga 370 because (amongst other features) it has a removable / upgradable RAM slot (yes, two slots would have been even better :)). You can find various sources (including ChatGPT) claiming it to be 16GB, however, if we look up the processor for this particular model on the Intel website, we’ll see that it supports up to 32GB. And indeed, here is the laptop, happily passing memtest86+ with a 32GB module (specifically this one):

In the same vein, Asus claims a maximum of 2x16GB for their Q170T, however the Intel website says 64GB should work with the i5 processor that’s in the machine, and indeed, here is a machine with 64GB happily passing memtest86+:

The lesson is: processor specs are more relevant than (in)official documentation when determining the maximum supported RAM size.

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Lampa Raptor combination lock manual https://grey-panther.net/2025/03/lampa-raptor-combination-lock-manual.html https://grey-panther.net/2025/03/lampa-raptor-combination-lock-manual.html#respond Fri, 28 Mar 2025 06:56:48 +0000 https://grey-panther.net/?p=1428 Archiving it here for posterity:

(the combination is in the password manager)

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Donations https://grey-panther.net/2024/12/donations.html https://grey-panther.net/2024/12/donations.html#respond Wed, 11 Dec 2024 07:12:01 +0000 https://grey-panther.net/?p=1393
(image courtesy of Nick Youngson under CC BY-SA 3.0)

At this point in my life I’m lucky enough that I have some expendable income. So here are a couple of organizations / individuals I donated to recently – maybe this will inspire you dear reader to also donate some – if you have the means to do so:

  • Firefox extensions:
    • A good source for people / projects / organizations to support is people / projects / organizations I use daily. So I checked about:addons and made some donations to the following:
    • Cookie Auto Delete (donation link) – reduce the amount of tracking websites are able to do.
    • NoScript (donation link) – a good security suite, and hopefully a way to encourage developers to not use JavaScript for basic features that are already available with HTML. Using basic HTML where it suffices has many, many advantages (more performant, uses less battery, more accessible for screen readers, easier to crawl and thus find by people, etc). That said, NoScript is a tool I would only recommend advanced users.
    • SponsorBlock (donation link) – many ethical discussion here to be had about “peddling unverified claims about random products” vs. “a man has to eat”. Maybe another time.
    • Decentraleyes (donation link) – Reduces tracking potential (and maybe also speeds up websites by keeping the files locally)
    • Some more meta-level thoughts about Firefox and extensions:
      • it’s great that Firefox exists. Then again, the organization itself seems to be captured at the moment who want to push all kinds of different agenda and put the mission of an independent, trustworthy browser at risk. Also, I’m not donating to them, because apparently their CEOs argument for their compensation was “but look how much all other CEOs are making” :(.
      • It’s surprising / worrying / inspiring how these great extensions are run by a very small amount (sometimes a single) developer.
  • WinRAR – not strictly a donation, but after many years of using it directly / indirectly, I purchased a license. I started using RAR back in the DOS days, where I used to marvel at their advanced user interface, features (such as splitting the archive into parts to fit on floppies!) and great compression ratio (compared to PkZIP, ARJ, LZH and the likes).

    (image source: archive.org)
  • exiftool.org – a great piece of software whether you want to add metadata (for better organizing your collection for example) or remove it (so that random people can’t physically find me)
  • IrfanView – a great little piece of software for image viewing / batch manipulation (such as resizing, format conversion, etc) developed by a single developer. Also, used the “plugin” concept, which I found (and still find) really cool. Just like in Winamp, foobar2000, FAR manager, Win(Total)Commander, etc.
  • publicdomainreview.org – this site comes up on HackerNews from time to time, most recently with their “What Will Enter the Public Domain in 2025?“. I’m staunchly convinced that the current copyright regime is largely a power play to enrich the rich and does very little to actually “promote the Progress of Science and useful Arts”. So, I always celebrate when more things go into the public domain.

Somewhat related: my employer also offers a generous gift-matching program (so, anything I donate is doubled up to $10k per year – for certain “verified” organizations), and so I donate monthly to these fine organizations:

And a bunch of other, non-technology charities that help different groups of people in need.

There are also some projects I would have liked to donate to, but couldn’t figure out how:

  • 7-Zip – a great archiver (even though there are some controversies around the project lead). It was nice having to legal solution, instead relying on cracked versions of WinRAR. Unfortunately I couldn’t find a way to donate to them (I only found an outdated reference showing that it was possible at one point).
  • uBlock origin – most marketing by definition is a scam (because, if the product was useful, people would actually be looking for it). And frequently it’s a much more direct scam (as in non working products, products that can actually hurt you or rouses to take your money). Ad-blocking is a must in todays world.
  • Rufus – for easily creating bootable USB sticks. The author doesn’t take donations, but recommends donating to the FSF. I already donate to fsfe (see above), hopefully that counts 🙂
  • Dos Navigator – after Norton/Volcov commander, DN was amazing! And I still haven’t figured out how they did some of their screensavers! (here is a recording of several of the screensavers, but it’s missing the one that I’m thinking of – the red/green/blue cylinders with gradients that mix between themselves and with the foreground – all this on a VGA card). Turns out you DN is freeware today!
  • FAR Manager – is the evolution of DN for the Windows and beyond era. Long file name support! And plugins! And all of this for free and open source.

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