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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#321

Post by wott »

eemil wrote: post #184
Moxdi wrote: post #31

No normal sized HDMI sucks, I don't want to buy another adapter, aside from that this looks really cool, can't wait to get one

I agree. No idea why they went with micro-hdmi, when mini displayport is more robust, more common, and royalty-free.

> displayport [...] royalty-free.

If I remember correctly (and that's a big if), DisplayPort started royalty-free but then they introduced royalties. From my blurry memory: I checked once many years ago and it was free, but then I checked again a couple of years later and it wasn't exactly free any more. Did it change again? Or am I completely wrong from the start? If someone remembers the history better than I do...

Re: Raspberry Pi 4

#323

Post by bscphil »

arbaal wrote: post #316
bscphil wrote: post #121

Earlier quoted context omitted.

I asked about this here: https://news.ycombinator.com/item?id=20261086 According to the response I've gotten so far, it will not support HDR or 10 bit. :-( However, the vast majority of SDR content is 8 bit. The few exceptions are mostly a few pirate groups who mostly encode anime. Edit: this is apparently now in doubt.

The LibreELEC developer said that the hardware is HDR (10bit) compatible and "only" the software side is missing for now. https://libreelec.tv/2019/06/libreelec-9-2-alpha1-rpi4b/

Thanks! That's what I seem to be seeing elsewhere now too, although the main site is now down (for me), so I haven't been able to confirm as much as I'd like.

I think I might go ahead and put in a preorder.

Re: Raspberry Pi 4

#325

Post by cafebabbe »

grizzles wrote: post #293

This is the death knell for x86 PCs for the consumer market. No regular user needs more than this. Developers and hardcore gamers will be the only ones left on x86. Intel will be a shadow of themselves soon. They have did such a bad job at diversifying.

What? Even on low-profile distros, Raspberries are terrible desktop PCs. This one is certainly looking better but i don't expect a game-changing experience, in light of existing i7s CPUs and javascript-"powered" apps.

Re: Raspberry Pi 4

#326

Post by mvip »

stedaniels wrote: post #317
mvip wrote: post #294

...if they could only fix the storage. Using SD cards for this workload is a very bad fit.

Why don't you just use USB3 storage?

That's fine for your desk, but hardly a good solution when deploying Raspberry Pis in the wild.

Re: Raspberry Pi 4

#327

Post by TheAceOfHearts »

chongli wrote: post #269
tmikaeld wrote: post #84

Earlier quoted context omitted.

The USB 3.0 ports should give 100MB/s (Benchmarks show up to +300MB/s), and you can mirror two disks for RAID-1. With 4GB of RAM, you'd even be able to use ZFS.

With 4GB of RAM, you'd even be able to use ZFS. Does it use ECC memory? If not, you should not use ZFS. Without ECC memory, ZFS carries the nasty risk of writing good data with a bad checksum, leading to data loss which would not occur in other filesystems (those that do not try to correct errors on the fly like ZFS).

As I understand it, this is just a myth. Here's a post [0] from Matthew Ahrens, one of the co-founders of ZFS who has remained active in its development:

> There's nothing special about ZFS that requires/encourages the use of ECC RAM more so than any other filesystem. If you use UFS, EXT, NTFS, btrfs, etc without ECC RAM, you are just as much at risk as if you used ZFS without ECC RAM. Actually, ZFS can mitigate this risk to some degree if you enable the unsupported ZFS_DEBUG_MODIFY flag (zfs_flags=0x10). This will checksum the data while at rest in memory, and verify it before writing to disk, thus reducing the window of vulnerability from a memory error.

[0] https://arstechnica.com/civis/viewtopic.php?p=26303271#p2630...

Re: Raspberry Pi 4

#328

Post by [deleted] »

elliotpage wrote: post #185

Can't wait to buy this, boot it up, play with it for four hours, then stick it in the same desk drawer with the other Pis I have bought over the years. (The upgrades look great, just my attention span is not so great)

[deleted]

Re: Raspberry Pi 4

#329

Post by bhouston »

swebs wrote: post #319

Does anyone know if it can boot from USB? I know one of the last models was able to after changing some firmware settings and the Raspberry Pi foundation mentioned adding better support for that in the future. MicroSD cards are just too prone to corruption to be running your OS off of.

It has been possible some RPi 3, https://thepi.io/how-to-boot-your-raspberry-pi-from-a-usb-ma...

Re: Raspberry Pi 4

#330

Post by kolp »

TimeOutBoss wrote: post #272
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/

What else would you recommend along side pi-hole, something easy to setup and maintain like pihole?

MotionEye OS is good as a camera surveillance system. Needs a USB camera or a Raspberry Pi camera. Takes a bit of tweaking to get the optimal camera settings (using a GUI), but then it works well. LibeElec is useful as a home theatre setup, based on Kodi.
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