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by Botspot
Thu May 30, 2019 7:39 pm
Forum: General discussion
Topic: Any way to increase random IO on hard drive?
Replies: 5
Views: 203

Any way to increase random IO on hard drive?

My Raspberry Pi 3 lives in a desktop computer case. It boots from a 3.5" 1TB hard drive. Because the hard drive takes a while to spin up at boot, I have a 4GB microSD card with only the boot partition on it. This configuration has proved to be very trustworthy, but it has horrible random read/write....
by Botspot
Wed May 29, 2019 9:49 pm
Forum: Beginners
Topic: I need some help (Car Dashboard)
Replies: 3
Views: 388

Re: I need some help (Car Dashboard)

Disclaimer: I have never done anything with a Raspberry Pi other than use it as my everyday desktop computer. Everything in this post is speculation. - Ability to watch youtube when parked OK so needs internet connection: probably $20 for a 3G adapter + the monthly fee And if you want Youtube availa...
by Botspot
Wed May 29, 2019 8:11 pm
Forum: Beginners
Topic: Issue with video calling
Replies: 8
Views: 428

Re: Issue with video calling

Try the Pi camera - it’s not sharing the USB ports with your Ethernet link Does the Pi camera have a microphone? The OP mentioned 100% CPU load and choppy video. I think the bottleneck is the CPU-intensive decoding, not the Ethernet or USB ports. Though using the Pi camera may help anyways, as I've...
by Botspot
Wed May 29, 2019 7:21 pm
Forum: Beginners
Topic: Issue with video calling
Replies: 8
Views: 428

Re: Issue with video calling

The Raspberry Pi 3 is 64 bit. The operating system is 32 bit. Essentially half of the processor is never used. The first and second of those sentences are true. The third one is not. Are you referring to the support circuitry? Or are all of those 'unused' transistors actually used for something?
by Botspot
Wed May 29, 2019 6:48 pm
Forum: Beginners
Topic: Issue with video calling
Replies: 8
Views: 428

Re: Issue with video calling

Short answer: The Raspberry Pi has more than enough power to do it. Unfortunately the software does not use much of the available power. Long answer: The Raspberry Pi 3 is 64 bit. The operating system is 32 bit. Essentially half of the processor is never used. I think they are working to fix this. A...
by Botspot
Mon May 20, 2019 11:43 pm
Forum: General discussion
Topic: How to remove USB audio so Pi can boot without it
Replies: 1
Views: 101

Re: How to remove USB audio so Pi can boot without it

Can you re-flash the SD card?
by Botspot
Mon May 20, 2019 8:24 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

I am also looking into VNC to create a virtual desktop I can connect to from the main OS, and simply bypass VNC for the audio and GPU overlay requirements. That's what I ended up doing. Credit to Sakaki for helping put me on the right track. Unlike multi-boot or PINN, this solution is limited to OS...
by Botspot
Mon May 20, 2019 8:06 pm
Forum: General discussion
Topic: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)
Replies: 105
Views: 9560

Re: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)

Hi Botspot, firstly, apologies for the delay in responding, I have been travelling. As to your question, systemd-nspawn lies roughly in the system virualization spectrum between a guest OS chroot, and a full-blown KVM approach. Unlike KVM, when booted under systemd-nspawn the (>=1) guest OS shares ...
by Botspot
Tue May 14, 2019 11:36 pm
Forum: General discussion
Topic: [SOLVED] Annoying feedback loop when using USB sound card and microphone
Replies: 9
Views: 326

Re: Annoying feedback loop when using USB sound card and microphone

I flashed a SD card with a new Raspbian OS. After switching the default ALSA audio device to the USB sound card, I expected the feedback loop to occur. It didn't! I tested the speakers connected to the sound card by playing a video on Chromium, and it works. I tested the microphone connected to the ...
by Botspot
Tue May 14, 2019 3:55 pm
Forum: Troubleshooting
Topic: Etcher didn't work for SD card in Win
Replies: 8
Views: 302

Re: Etcher didn't work for SD card in Win

Just an FYI here, I spent some time trying to flash an SD image using the recommended program, Etcher, and it was completely no-go. I ran it with admin privileges and it still wouldn't write an image. Finally was able to get it written with win32 disk imager, so I have no problem, but I can't imagi...
by Botspot
Mon May 13, 2019 12:28 pm
Forum: General discussion
Topic: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)
Replies: 105
Views: 9560

Re: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)

A 64-bit (aarch64) Debian Stretch userspace guest OS booted inside a lightweight systemd-nspawn container Could you tell me more about systemd-nspawn containers and what they can and cannot do? I am looking to run a second instance of Raspbian Stretch Desktop, inside a QEMU-style window, on my main...
by Botspot
Sun May 12, 2019 1:31 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

would docker be of interest? https://www.docker.com/ having only scratched the surface myself by installing a couple of docker versions of projects that took my interest. But as i understand it its a way to sit many systems side by side without any of the conflicts that could arise between differen...
by Botspot
Sun May 12, 2019 12:28 am
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

Update: I succeeded in using systemd-nspawn to correctly boot up the operating system on a second SD card inserted into the easily-reachable USB card slot on my Pi. The familiar code-based CLI boot screen appeared in the terminal. Since I am not emulating hardware, CPU architecture, or even another ...
by Botspot
Sat May 11, 2019 1:45 am
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

Well, is this any better ? https://www.raspberrypi.org/forums/viewtopic.php?t=232417 ghans Ghans, thank you so much for sharing this with me. I went ahead and flashed one of my SD cards with the disk image on that post, and I can see the potential of running Raspbian and Buster at the same time. It...
by Botspot
Fri May 10, 2019 8:31 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

According to the Stretch tutorial, Qemu does not yet support Raspberry Pi 3. Instead, they had qemu simulate an entirely different ARM device , versatiale-pb, which has a maximum of 256 MB RAM. Since qemu is emulating an entirely different device, it is totally understandable for it to be too slow, ...
by Botspot
Fri May 10, 2019 8:16 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

I would rather not use QEMU, mainly because it is meant to simulate non-native machines and CPU architectures. Since I do not wish to simulate a entirely different machine, I see no reason to use QEMU. Please understand the difference between QEMUs TCG "accelerator" and QEMU with KVM acceleration. ...
by Botspot
Fri May 10, 2019 7:53 pm
Forum: General discussion
Topic: Chromium - Audio Issues On Just One Website
Replies: 2
Views: 120

Re: Chromium - Audio Issues On Just One Website

Raspbian is up to date and I use a Pi 3 B+ which shows no other issues. Anyone have any ideas as to what could be wrong? Yes, I have some ideas on what could have gone wrong: Did you check and make sure chromium is up to date? (type in chrome://version into the URL bar, mine looks like this: 2019-0...
by Botspot
Fri May 10, 2019 7:41 pm
Forum: Graphics, sound and multimedia
Topic: Screen record
Replies: 2
Views: 164

Re: Screen record

Hello, Is there any way to record a video for the AMG8833 camera? Thank you. The title seems to be asking how to set up screen recording software. The description is asking how to record a video for a thermal camera. Since I do not know which question to answer, I will proceed to answer them both. ...
by Botspot
Fri May 10, 2019 6:06 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

Local meet-up with other Raspberry Pi users are normally called ‘Jams’ https://www.raspberrypi.org/jam/ No jams nearby me - I live in Texas. By setting up different images on a NAS you can then select the image to boot from. I do see how that would be a non-physical way to switch operating systems,...
by Botspot
Fri May 10, 2019 5:11 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: How do I run a Raspbian virtual desktop inside Raspbian?

You could use pxe to boot along these lines https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/net_tutorial.md Why would I need to network boot? Could you look to move all apps to one image booting from a USB HD? Simplest to manage updates and backups on. Not possible. For exa...
by Botspot
Fri May 10, 2019 3:16 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: Can I have a Raspbian virtual machine on Raspbian?

It sounds like the reason for asking to run multiple copies of Raspbian simultaneously is just to avoid physically swapping sd cards? In which case, why not consider PINN? It allows multiple installations of Raspbian to be installed on the same sd card with a boot manager to select which one you wa...
by Botspot
Fri May 10, 2019 2:39 pm
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: Can I have a Raspbian virtual machine on Raspbian?

Specifically what I want is several instances or Raspbian running in separate windows simultaneously. Is it possible? Maybe. Is it possible to do it in any way that would be useful? I think it would be useful and here's why: I have several SD cards, each one with different software installed. They ...
by Botspot
Fri May 10, 2019 1:48 am
Forum: General discussion
Topic: [SOLVED] How do I run a Raspbian virtual desktop inside Raspbian?
Replies: 24
Views: 1064

Re: Can I have a Raspbian virtual machine on Raspbian?

Specifically what I want is several instances or Raspbian running in separate windows simultaneously. Since I am not simulating a non-native CPU architecture, I would rather not use qemu. And even if I could get qemu to work, I expect it to be too slow to be usable. Instead of simulating extremely l...
by Botspot
Thu May 09, 2019 8:03 pm
Forum: Troubleshooting
Topic: failure to connect to raspberry using VNC Viewer
Replies: 8
Views: 272

Re: failure to connect to raspberry using VNC Viewer

Could you attach a screenshot of the error when trying to connect?
Since you mentioned ssh, to me that sounds like you are running the Pi without a screen. Do you know for sure if VNC Server is running on the Pi?
by Botspot
Tue May 07, 2019 7:47 pm
Forum: General discussion
Topic: USB and HDMI suddenly stopped working
Replies: 8
Views: 312

Re: USB and HDMI suddenly stopped working

the 3.3v pins does not work. Usually when the 3.3v pins shows zero volts, it is very difficult to repair. You should probably get a new Pi. ok, but im courious is there any chance to repair it myself or some kind of video than explains the repair process and shows it ? The problem could be caused b...

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