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by algorithm
Tue Mar 12, 2019 7:33 am
Forum: General discussion
Topic: 64-bit operating system
Replies: 349
Views: 47657

Re: 64-bit operating system

My guess is the change might be driven not by speed/addressing requirements (going forward) or backwards hardware compatibility, but software availability. E.g. I see VS Code and Electron are eol-ing their 32-bit support.
by algorithm
Tue Mar 12, 2019 7:19 am
Forum: General discussion
Topic: 64-bit operating system
Replies: 349
Views: 47657

Re: 64-bit operating system

- Trig functions are almost always painfully slow. What precision do you need on those, and you may be better using a quick lookup table instead of computing it every time. Symmetry on sine and cosine save you 75% on the lookup table, and implementing one implements the other. In C, per degree: sta...
by algorithm
Wed Mar 06, 2019 7:42 pm
Forum: Raspbian
Topic: wpasupplicant update?
Replies: 10
Views: 1795

Re: wpasupplicant update?

That was my interpretation, too, yes. However, make sure to try it first with a non-headless Pi (screen and keyboard/mouse connected) because for some reason these changes after reboot left my Pi3+ unable to connect to my home network... Very strange, because my router is less than a year old and I'...
by algorithm
Tue Mar 05, 2019 7:17 pm
Forum: Raspbian
Topic: wpasupplicant update?
Replies: 10
Views: 1795

Re: wpasupplicant update?

Thanks. What a mess. I'll have to check if the eduroam network I use sometimes does indeed require tlsv1.0 and level=1.
by algorithm
Tue Mar 05, 2019 6:41 pm
Forum: Raspbian
Topic: wpasupplicant update?
Replies: 10
Views: 1795

wpasupplicant update?

What sort of update is this that downgrades the cypher & security level? wpasupplicant (2:2.6-19) unstable; urgency=medium With this release, wpasupplicant no longer respects the system default minimum TLS version, defaulting to TLSv1.0, not TLSv1.2. If you're sure you will never connect to EAP netw...
by algorithm
Sat Nov 17, 2018 6:53 am
Forum: Raspbian
Topic: Hash mismatch of ps2eps, update fails
Replies: 8
Views: 1221

Re: Hash mismatch of ps2eps, update fails

Thanks very much! Do you know why I always got to that particular mirror, or at least every time I tried? Is the top pick always the shortest path? Would something like "pick a random mirror for the session from the 5 shortest paths" be more robust, for instance? I found it strange that one faulty m...
by algorithm
Fri Nov 16, 2018 5:53 pm
Forum: Raspbian
Topic: Hash mismatch of ps2eps, update fails
Replies: 8
Views: 1221

Re: Hash mismatch of ps2eps, update fails

having a working system is more important. Unless you absolutely need the update, being delayed a short time is not a serious issue. Sure. That's why I waited a week to begin with. Problem is not this single package being slightly (or very) outdated, but the whole "apt upgrade" failing every time b...
by algorithm
Fri Nov 16, 2018 2:43 pm
Forum: Raspbian
Topic: Hash mismatch of ps2eps, update fails
Replies: 8
Views: 1221

Re: Hash mismatch of ps2eps, update fails

I used a temporary workaround: looked at https://www.raspbian.org/RaspbianMirrors and picked another mirror, edited /etc/apt/source.list where I commented out the main mirror redirector and replaced it with my new single mirror address. That worked, so I guess it's a local problem with serverius.net...
by algorithm
Fri Nov 16, 2018 6:43 am
Forum: Raspbian
Topic: Hash mismatch of ps2eps, update fails
Replies: 8
Views: 1221

Re: Hash mismatch of ps2eps, update fails

It still blocks updates. Does someone know what my next step can be to solve this, if it doesn't get solved by the mirror or upstream? How do I force apt to try a different mirror?
by algorithm
Wed Nov 14, 2018 7:56 am
Forum: Raspbian
Topic: Hash mismatch of ps2eps, update fails
Replies: 8
Views: 1221

Hash mismatch of ps2eps, update fails

Hi, (Partially) automated updates of my system failed the last couple of days on a hash mismatch of the ps2eps package on a certain mirror server. It seems it tries the same mirror every time, "serverius.net": Error:41 http://mirror.serverius.net/raspbian/raspbian stretch/main armhf ps2eps armhf 1.6...
by algorithm
Wed Apr 25, 2018 8:50 pm
Forum: General discussion
Topic: Determining 3B board age
Replies: 2
Views: 320

Re: Determining 3B board age

Ah excellent. Thanks!
by algorithm
Wed Apr 25, 2018 2:17 pm
Forum: General discussion
Topic: Determining 3B board age
Replies: 2
Views: 320

Determining 3B board age

Hard to choose which forum, I hope General is OK. I have three model 3B rev 1.2 boards here. Is there a way to determine their age from the outside? Most promising might be the numbers on the back, two lines just below the gpio pins, next to the little QR-code(?) sticker which also has varying numbe...
by algorithm
Tue Mar 13, 2018 2:37 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Using debian multi-arch to install 64bit applications
Replies: 6
Views: 969

Re: Using debian multi-arch to install 64bit applications

I tried installing a new version of Visual Studio Code from the 64bit download; I forgot if the previous version I had installed was 32 or 64bit and thought, worst case, it would leave me with two side by side versions. But that went completely wrong. All sorts of ":amd64" versions of packages had t...
by algorithm
Sat Feb 24, 2018 9:04 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Upgrade to kernel 4.14?
Replies: 7
Views: 1648

Re: Upgrade to kernel 4.14?

Hm, not as simple as that, after all. An apt-get install of the latest kernel from backports warns that this will delete a loooong list of packages that are apparently incompatible with that kernel version (I did do "apt-get -t stretch-backports upgrade" beforehand which skipped a bunch of packages ...
by algorithm
Fri Feb 23, 2018 12:11 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Upgrade to kernel 4.14?
Replies: 7
Views: 1648

Re: Upgrade to kernel 4.14?

Presuming you are running Debian Stretch with RPD: https://www.raspberrypi.org/downloads/raspberry-pi-desktop/ Then just follow Debian Stretch x86 Blogs like: http://jensd.be/818/linux/install-a-newer-kernel-in-debian-9-stretch-stable Yes, RPD like this forum. Thanks, that will work! Was just curio...
by algorithm
Fri Feb 23, 2018 12:08 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Upgrade to kernel 4.14?
Replies: 7
Views: 1648

Re: Upgrade to kernel 4.14?

Don't ever run rpi-update. It's not needed, it installs untested, experimental kernels and bootcode. If you can't repair an unbootable system in 20 minutes rather than 20 hours the rpi-update isn't for you. Dude, chill on the know-it-all attitude. This is for testing, in a vm, nothing production-li...
by algorithm
Fri Feb 23, 2018 11:34 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Upgrade to kernel 4.14?
Replies: 7
Views: 1648

Upgrade to kernel 4.14?

To my surprise, rpi-update is included, *and* it seems to work, but I guess it doesn't integrate with the desktop startup files and -locations. (Unsurprisingly.) After reboot, still 4.9 and no 4.14 option in grub. My question: rpi-update is not the way to go, right? So how do I upgrade to a kernel l...
by algorithm
Thu Feb 22, 2018 9:17 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Always boot with certain screen size as a vm?
Replies: 2
Views: 576

Re: Always boot with certain screen size as a vm?

O. M. G., the Display Settings are simply hidden! I would never in a million years have guessed that. Yes, that was it, I didn't need the xrandr command, just enabled Display Settings and chose a new screen size (virtual display resolution) and that persisted across reboot. I suspect this is a left-...
by algorithm
Mon Feb 19, 2018 9:16 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Always boot with certain screen size as a vm?
Replies: 2
Views: 576

Always boot with certain screen size as a vm?

I have RPD up & running fine as a virtual machine, using Vmware Fusion 10 on a Mac. Have installed open-vm-tools from the standard Debian repository, and resizing of the vm window works well, either free-form or from the View > Resize Virtual Machine > {pick a size} menu. However, on every boot or r...
by algorithm
Fri Jan 12, 2018 11:10 am
Forum: Advanced users
Topic: Scaling digital signage to 500 screens with limited bandwidth
Replies: 16
Views: 2739

Re: Scaling digital signage to 500 screens with limited bandwidth

Yes, I'm sure that for a professional signage project (like OP's, probably) your product might be a good turn-key solution. In the spirit of RPi tinkering, though, my first thought was: just one more Pi and a "download from there" directive.
by algorithm
Thu Jan 11, 2018 10:40 am
Forum: Advanced users
Topic: Scaling digital signage to 500 screens with limited bandwidth
Replies: 16
Views: 2739

Re: Scaling digital signage to 500 screens with limited bandwidth

Just set up a local cache/proxy? Configure one RPi to download new content externally once per day and schedule all the others to download from it, on random or distributed (maybe by IP address) times during the night. Could be very simple with manual configuration pointing to your local cache or ve...
by algorithm
Thu Jan 11, 2018 10:30 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.14
Replies: 161
Views: 78984

Re: Moving Linux kernel to 4.14

One of my Raspberry PI's is in a really poor location for WiFi (not my network, so I can't fix or adjust it). It operates well and the apt-get update and apt-get upgrade commands don't phase it at all, but the sudo BRANCH=next rpi-update fails multiple times during the download of the second stage ...
by algorithm
Thu Jan 11, 2018 10:21 am
Forum: Advanced users
Topic: Analogue audio redux
Replies: 73
Views: 19230

Re: Analogue audio redux

Hi, is this patch in the latest raspbian release? I don't know about the latest Raspbian release but here's how to try it, from the first post: "add audio_pwm_mode=2 to /boot/config.txt and reboot." I imagine this works if your firmware is at least as new as that first post which was from Wed 11 Oc...
by algorithm
Sat Dec 09, 2017 12:39 pm
Forum: Camera board
Topic: Raspistill annotation NOT like strftime
Replies: 8
Views: 817

Re: Raspistill annotation NOT like strftime

Dutch (Netherlands). Tested with “LC_TIME=nl_NL.UTF-8 raspistill” which is the same value as is set for $LANG. Output of date command on the command line is localised without having to do anything (obviously after having configured the locale systemwide using raspi-config + reboot).
by algorithm
Sat Dec 09, 2017 12:24 am
Forum: Camera board
Topic: Raspistill annotation NOT like strftime
Replies: 8
Views: 817

Re: Raspistill annotation NOT like strftime

It does’t work if I set the LC_TIME variable (which isn’t set, apparently; I only saw LANG as relevant environment variable).

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