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by jceajcea
Sun Aug 09, 2020 3:43 pm
Forum: Advanced users
Topic: PXE: Please, explain the role of option 43
Replies: 2
Views: 207

PXE: Please, explain the role of option 43

Hi there!. I am successfully PXE booting my Raspberry PI 3B+. Cool. I was about to move on when I found about "option 43" set to "Raspberry Pi Boot " (three spaces at the end) as a requirement to successfully PXE the Raspberry PI but... I am not using option 43 and my 3B+ boots w...
by jceajcea
Fri Jul 31, 2020 4:41 am
Forum: Advanced users
Topic: Examples/advice of running linux "live" from initramfs
Replies: 7
Views: 502

Re: Examples/advice of running linux "live" from initramfs

Maybe this issue would be of interest to you: https://github.com/debian-pi/raspbian-u ... issues/524 . TL;DR: gauging interest in PXE support for "raspbian-ua-netinst".
by jceajcea
Thu Jul 30, 2020 11:41 pm
Forum: Advanced users
Topic: Examples/advice of running linux "live" from initramfs
Replies: 7
Views: 502

Re: Examples/advice of running linux "live" from initramfs

Cool. Thanks for the suggestions. I am evaluating too "raspbian-ua-netinst". The point is that PXE booting is SLOW and fragile, so it would be faster to do a minimal booting via PXE and then download a real OS in a RAMDISK from a webserver, instead of trying to deliver a 300MB payload thru...
by jceajcea
Thu Jul 30, 2020 5:02 pm
Forum: Advanced users
Topic: Examples/advice of running linux "live" from initramfs
Replies: 7
Views: 502

Examples/advice of running linux "live" from initramfs

Hi there! I wonder if there is any project out there that runs linux from an initramfs?. Of course, minimum Linux, since it is running from RAM, let's say < 500MB uncompressed. I need to run my idea from initramfs and I wonder if I can learn/steal from somebody else already doing something similar. ...
by jceajcea
Tue Jul 28, 2020 3:06 am
Forum: Advanced users
Topic: Is hot plugging a microSD electrically safe?
Replies: 13
Views: 879

Re: Is hot plugging a microSD electrically safe?

The kernel drivers definitely have code that polls an empty SD card slot to determine when a card is inserted, so I expect hot-plug is an expected mode of operation. How well it actually works is a different question, as I spent about an hour yesterday looking for one of those tiny cards I had acci...
by jceajcea
Tue Jul 28, 2020 2:40 am
Forum: Advanced users
Topic: Is hot plugging a microSD electrically safe?
Replies: 13
Views: 879

Is hot plugging a microSD electrically safe?

Hi there. Sorry if this is not the right forum area for this question. Please, move the thread where appropriate. I am thinking about a PXE microSD card flasher. The idea is to boot a Raspberry PI from PXE, with no microSD card. That initial network OS would wait until the user inserts a microSD WHI...
by jceajcea
Sun Jan 27, 2019 2:27 am
Forum: Graphics programming
Topic: Any plan to support NETVC/AV1 (software) acceleration in the GPU?
Replies: 5
Views: 3901

Re: Any plan to support NETVC/AV1 acceleration in the GPU?

I am just speculating and I am not familiar with this, but maybe supporting something like https://github.com/doe300/VC4CL (OpenCL on the Raspberry PI) could open the door to other developers to help out to "offload" some demanding code to the GPU.

Thanks for your time!.
by jceajcea
Sun Jan 27, 2019 2:04 am
Forum: Graphics programming
Topic: Any plan to support NETVC/AV1 (software) acceleration in the GPU?
Replies: 5
Views: 3901

Re: Any plan to support NETVC/AV1 acceleration in the GPU?

Sorry, I am talking about GPU acceleration, but using software. That is, the 24 GFLOPS of the GPU, with no special hardware support for AV-1. I fully realize that new silicon takes time. Some time consuming routines in software AV-1 decoding (lets say, FFMPEG, "libav*" or an hypotetical fu...
by jceajcea
Thu Jan 24, 2019 11:07 pm
Forum: Graphics programming
Topic: Any plan to support NETVC/AV1 (software) acceleration in the GPU?
Replies: 5
Views: 3901

Any plan to support NETVC/AV1 (software) acceleration in the GPU?

NETVC/AV1 is the new open video codec (similar in spirit to audio Opus, but for video). It is not patented and it is free to use, and quality and compression is better that H.265 (of course, far better than H.264). Some details: https://en.wikipedia.org/wiki/NETVC https://en.wikipedia.org/wiki/AV1 h...
by jceajcea
Sat Jan 06, 2018 5:36 am
Forum: Raspberry Pi OS
Topic: Jessie (Debian 8) support policy and upgrade to Debian 9 procedure
Replies: 0
Views: 287

Jessie (Debian 8) support policy and upgrade to Debian 9 procedure

Hi there! What is the support policy for Jessie (Debian 8) Raspbian systems? I can't find anything relevant online. No changes in the repository since 1st dec 2017. Is it dead already? I guess your don't follow Debian LTS policy :-? Beside that, what is the procedure to upgrade to Debian 9 without a...

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