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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#641

Post by thedanbob »

burk96 wrote: post #579
agumonkey wrote: post #381

Earlier quoted context omitted.

My flaw regarding SBCs, is that I want to master the whole stack (what variant of linux.. , how is is written,...), yet I don't have the context to, so I get fed up with almost good use cases and lose interest. That's also why I'm tring microcontrollers, it's back to low level, less shiny projects, but mentally saner.

Any suggestions on microcontrollers? I love my pi but I've been wanting to try my hand at something a little less, desktop-like.

The ESP8266 is a fantastic platform and Adafruit has some great breakout boards for it. I’ve heard good things about its successor the ESP32 as well.

Re: Raspberry Pi 4

#642

Post by somebodythere »

hlandau wrote: post #17

>Are you still using VideoCore? >Yes. VideoCore 3D is the only publicly documented 3D graphics core for ARM‑based SoCs, and we want to make Raspberry Pi more open over time, not less. This stated intention and rpi.org's actions are simply not isomorphic. If they want to make Raspberry Pi more open, firstly, why do they publish only abridged (read: fake) schematics? [1] Secondly, why was rpi.org caught adding DRM chip…

Someone has published the HMAC key for the camera DRM module: https://gist.github.com/marcan/6dde73a9a0c917cd4fc9784a0a73e...

Re: Raspberry Pi 4

#643

Post by sertsa »

bscphil wrote: post #40

> 4K! I'm very excited about these upgrades too (especially GigE), but as far as I can tell nothing on this news page specifies whether the Pi will also support HDR output as part of the 4K upgrade. That's most of the practical benefit of 4K - that 4K releases tend to come with HDR10 or DolbyVision support. Anyone know if we can expect HDR output to work? If I knew it supported that I'd be purchasing one right now to…

From Libreelec article on RPI4:

"The 4B hardware is HDR capable, but software support has a dependency on the new Linux kernel frameworks merged by Intel developers (with help from Team LibreELEC/Kodi) in Linux 5.2 and a kernel bump will be needed to use them. Once the initial excitement and activity from the 4B launch calms down, serious work on HDR and transitioning Raspberry Pi over to the new GBM/V4L2 video pipeline can start."

Full article: https://libreelec.tv/2019/06/libreelec-9-2-alpha1-rpi4b/

Re: Raspberry Pi 4

#644

Post by Rebelgecko »

burk96 wrote: post #579
agumonkey wrote: post #381

Earlier quoted context omitted.

My flaw regarding SBCs, is that I want to master the whole stack (what variant of linux.. , how is is written,...), yet I don't have the context to, so I get fed up with almost good use cases and lose interest. That's also why I'm tring microcontrollers, it's back to low level, less shiny projects, but mentally saner.

Any suggestions on microcontrollers? I love my pi but I've been wanting to try my hand at something a little less, desktop-like.

ESP8266 or the ESP32 (if you want something beefier that also has bluetooth) give fantastic bang for your buck, especially if you get them from a trustworthy-ish store on Aliexpress

Re: Raspberry Pi 4

#645

Post by anderspitman »

shams93 wrote: post #97

I'm super excited as well. I figured out the secret sauce to get a low latency kernel build I was able to get down to 20ms latency but I'm excited to see if this can't get down to 10ms even though 20ms is acceptable low audio latency, already with only 1 gig of ram on a pi3 ardour is usable for multitrack recording, excited to see how this does with 4 gigs.

I played around with some Linux DAW stuff back in the day. That's awesome that you can achieve enough performance on an RPi these days.

Re: Raspberry Pi 4

#646

Post by wlll »

gertrunde wrote: post #273
8fingerlouie wrote: post #203

Earlier quoted context omitted.

The USB port on the Odroid HC2 is 2.0, but the SATA interface is connected to a USB3 but, as is the Gigabit Ethernet. Furthermore, SATA and Ethernet are connected to individual USB3 busses, as opposed to earlier RPi designs where everything shared the same USB2 bus. I haven't checked the RPi 4 specs yet, but i can imagine it's still the same layout, just a faster bus, which can be "just fine" - it should be plenty fa…

For the RPi 4, they moved the ethernet controller onto the SoC, it's not connected via USB any more.

That is exactly what I've been interested in, and the information I was looking for thanks.

Re: Raspberry Pi 4

#647

Post by vardump »

megous wrote: post #628
vardump wrote: post #533

Earlier quoted context omitted.

Seriously? They left out Cryptography Extensions from the RPi4 SoC? Any source / references? http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.... Edit: Ouch if this turns out to be true... https://www.raspberrypi.org/forums/viewtopic.php?t=243410 Edit 2: Ah, also RPi3B and 3B+ didn't have those extensions. Oh well. Edit 3: Just tested my bog standard RPi3B+ running Raspbian. It could do "openssl speed -ela…

Nice investigation!

I believe it might be possible to use VideoCore VI for crypto acceleration.

I think it would be pretty tricky to get LUKS to use it, though. At least writing a kernel module, but most likely LUKS patch would be required. You'd probably have to choose between 3D acceleration and full disk encryption.

Looks like VideoCore VI is getting some compute shader support:

https://gitlab.freedesktop.org/anholt/mesa/tree/v3d-cs/src/g...

Re: Raspberry Pi 4

#648

Post by GreenJelloShot »

IE6 wrote: post #479
franky47 wrote: post #189

Earlier quoted context omitted.

I can relate. However these days I have found a new life for those abandoned Pis: I install Pi-Hole [1] on them and set them up for family and close friends. [1] https://pi-hole.net/

I wish pi-hole was just a tiny bit more polished. I found it takes a lot of work (and knowledge of linux networking) to get up and running properly and stable.

I know this isn't terribly helpful to you, but I have never had any problems with using or upgrading Pi Hole. I have been running mine for a few years now, and everything has been smooth and error-free.

Re: Raspberry Pi 4

#649

Post by archon810 »

jki275 wrote: post #596
boromi wrote: post #560

Earlier quoted context omitted.

* A 3B+ running the UniFi controller for my home network. What's the unifi controller?

Just the software that runs Ubiquiti equipment. You can run it on anything, the "cloud key" device Ubiquiti has is probably the most popular, I just run it on a Windows server in my network. Some people run it on a rpi, though I've never understood why.

Probably because it's cheaper than the Cloud Key.

Re: Raspberry Pi 4

#650

Post by jryan49 »

znpy wrote: post #572
guilhermetk wrote: post #435

Earlier quoted context omitted.

https://medium.com/@ghalfacree/benchmarking-the-raspberry-pi...

I can't read that article because Medium has decided that I have to login to do so (and possibly sign up). Needless to say, I won't be reading that link. Wordpress.com wouldn't have done that with your content. Just saying.

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