211–220 of 231 posts
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> It works well, allowing separate boot images for each individual Pi on your network. Isn't that a natural capability with PXE implemented at the server keyed off the MAC address?
I’m sure that’s true. I’ve only used this for Rpis, which have it as a neat pull-based capability. Just add a subdirectory with the right name for each one in the tftp root.
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> Apple has made questionable hardware design decisions lately. If Louis Rossmann is to be believed, the T2 chip + secureboot situation is just as bad as the old keyboard situation. It sucks having no say over the hardware. His claims were significantly overblown. If your T2 dies, yeah, your data is toast, because the disk keys live in the T2. But the same applies for your SSD dying itself, and the T2 is not especial…
It's just like the keyboard in a sense. Before the keyboard problems were a wildly-acknowledged issue I had to listen to people online argue that the field failure rate was perfectly fine, when they didn't know either the actual failure rate nor know anything about reliability engineering. Maybe the failure rate is fine, maybe it's not. All we know right now is that they added an additional single point of failure. T…
Maybe you're right, maybe you're wrong. I can just pick the second option. This is like digging up an old comment and saying "it's like when you were wrong that time".
> All we know right now is that they added an additional single point of failure.
Do we know that? TPM and encryption are also single points of failure, for your data at least. Apple didn't add that to increase the failure rate, they added it to have more control and to offer features that differentiate them from most other OEMs using COTS components for this.
They did the same with phones, TouchID and FaceID, the secure enclave, things that gave Apple enough control to turn the iPhone into the gold standard for keeping your data secure on a phone. It stands to reason that they want to do the same on laptops.
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When using netboot, the boot rom will pull the files it needs from the tftp server. It will first look for them in a subdirectory with the Pi’s serial number as its name. If you’re netbooting without any sdcard installed, I’d suggest disabling sd polling.
PXE uses the MAC address doesn't it?
For folks considering running 64-bit on the pi - I don’t think you need 64-bit userland. I’ve been running a 64-bit kernel on my pi with 32-bit userland perfectly fine. The few things that actually need 64-bit (I’m looking at you mongo) run in 64-bit mode via docker. That said, I’m not 100% sure how much memory overhead I have in this setup vs just running the 64-bit userland. Technically there’s a very interesting “…
Linux x32 ABI, the free 5-8% performance upgrade!
[1] https://www.youtube.com/watch?v=Mw-ravkg67k&
From René Rebe of T2-SDE pre-Gentoo source-based Linux distro fame.
I occassionally watch it, and the website is deceptive because the latest builds are much newer than the website suggests.
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I also read recently that the lack of cooling can really throttle the performance of a Pi4. Do you have a good heat sink and fan installed?
The RPi4 was designed with bursts of activity in mind, but for more sustained work without thermal throttling I have had very good experiences with the Argon One case ( https://www.argon40.com/catalog/product/view/id/52/s/argon-o... ) and the Flirc case ( https://flirc.tv/more/raspberry-pi-4-case ).
I really wish Microsoft would release a version of Windows 10 (the full version, not IoT) for the Pi 4 so developers could easily test their apps on an actual ARM device. Being able ship a Raspberry Pi 4 preloaded with Windows 10 to developers could bring a huge boost in the number of apps that support Windows on ARM.
Someone managed to get it running recently (video is 2 days old): https://www.youtube.com/watch?v=is6qQujk6uU I wouldn't be surprised if Microsoft was also silently working on it.
The lack of suitable USB driver for the USB A ports is the main holdup to any reasonably usable setup (with varying workarounds which each have their own limitations) followed by the GPU driver - neither are easily fixed unfortunately.
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> - AMD's Ryzen 4000 products look amazing, but (almost?) none of the laptops are 13" with high quality screens. Check out the Xiaomi RedmiBook 13 (100% sRGB coverage).
My laptop's display panel is almost 10 years old, and has about 96% AdobeRGB coverage. 100% sRGB should be considered barely above shit-tier. Probably fine if you don't do any photo or video editing ever, I guess?
> The BCM2711 chip that we use on Raspberry Pi 4 can address up to 16GB of LPDDR4 SDRAM, so the real barrier to our offering a larger-memory variant was the lack of an 8GB LPDDR4 package. These didn’t exist (at least in a form that we could address) in 2019, but happily our partners at Micron stepped up earlier this year with a suitable part. All other SBCs in this market segments have also been capped at 4GB - I'm h…
Is it true that the L2 cache can only cover the first 1GB of RAM?
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I did an article on the topic after the Pi firmware update made the situation a lot better. A bare Pi is okay without a fan, but if you want it in a case, the Flirc case is your best option (IMO): https://www.jeffgeerling.com/blog/2019/best-way-keep-your-co...
Great article, thanks. The Flirc case looks good and for $15 it's an obvious buy. Having just spent a bit north of $1k on a new CPU, RAM, and mobo for my desktop, I'm having a bit of sticker shock (in a good way) at how low these RPi prices are.
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Like a Rock Pi 4? https://rockpi.org/rockpi4
Unfortunately POE is still external on the Rock Pi 4 A carrier board for Compute Module with just POE / ethernet, USB ports and and SD card slot would be good enough too I literally want same form factor as the Ubiquiti board but with open source support, and sufficient power to charge a phone from the USB port Orange Pi Zero is along the right lines but doesn't have enough RAM for my needs and I'm unsure about the p…