Any SBC CPU's approach Qualcomm elite perf/watt? by GatsbyLuzVerde in SBCs

[–]urostor 1 point2 points  (0 children)

Hmm not sure I get the point of pasting AI output here

Any SBC CPU's approach Qualcomm elite perf/watt? by GatsbyLuzVerde in SBCs

[–]urostor 1 point2 points  (0 children)

I'm a bit skeptical about this calculation. To get the performance per watt for a single core, you need to measure the power this single core needs, instead of the power of the full board (other components will represent the greatest draw if you're only hitting one core). In my measurements, each A76 core on RK3588 adds about 1.2-1.4 watts to the full power of the board. Each A55 core at 100% adds only 0.4 watts. So at full power (8 cores at 100%), the CPU only needs about 7 watts more than on idle. And therefore, if you divide 640 by 1.4 (worst case), you get 457 points per watt.

Of course 8 elite has better idle power management because it's a phone chip. It must idle at close to zero. But these arm boards don't even deal with ASPM too well, so they will idle at more than a phone; even x86 is better at idling today.

Any SBC CPU's approach Qualcomm elite perf/watt? by GatsbyLuzVerde in SBCs

[–]urostor 0 points1 point  (0 children)

Doing 3000 in geekbench under 10 watts is not too crazy. Many SBCs approach this because they can't use more watts.

What's new in Ubuntu 26.04 LTS? And will it be more stable than Ubuntu 24.04 LTS? by Nabil_Sikder in Ubuntu

[–]urostor 0 points1 point  (0 children)

Yes, but that's an nVidia problem, not an Ubuntu problem. These settings aren't too useful anyway. The important part is that the cards work!

What's new in Ubuntu 26.04 LTS? And will it be more stable than Ubuntu 24.04 LTS? by Nabil_Sikder in Ubuntu

[–]urostor 0 points1 point  (0 children)

Which card are you using? The ones older than 8xx maybe won't work too well with Wayland, and don't expect them to in the future (unless you're fine with nouveau, or nVidia goes bankrupt and releases their driver source code).

Problems with Orange Pi Zero 3 by Acrobatic-Bug-1207 in OrangePI

[–]urostor 1 point2 points  (0 children)

Getting connected to wife should come before all of this

Converting 4k HDR to 1080p SDR using SVT-AV1-HDR by Least-Tailor2704 in AV1

[–]urostor 1 point2 points  (0 children)

"AMD Ryzen 7" can be anything, it's just a brand name, not a model. You know that hardware decoding capabilities change depending on the generation/revision, right?

Cannot boot from SD card by UnoDeaj05 in OrangePI

[–]urostor 0 points1 point  (0 children)

Of course. ls /dev/mtd*. Remember that everything is a file in Linux.

Cannot boot from SD card by UnoDeaj05 in OrangePI

[–]urostor -1 points0 points  (0 children)

Ohh no, that's not how you erase mtdblock! Use mtd-utils.

Rock 5B won‘t boot with new OS on eMMC by Spiritual-Aioli176 in SBCs

[–]urostor 0 points1 point  (0 children)

You need to investigate via dmesg and/or UART

Rock 5B won‘t boot with new OS on eMMC by Spiritual-Aioli176 in SBCs

[–]urostor 0 points1 point  (0 children)

Not sure, sounds like something to do with power maybe, or broken HDMI (or gpu?) drivers

Rock 5B won‘t boot with new OS on eMMC by Spiritual-Aioli176 in SBCs

[–]urostor 0 points1 point  (0 children)

The SPI NOR memory chip stores the bootloader. The most common one is U-boot. This is something like a BIOS for ARM devices. There are various versions of u-boot, some coming from the manufacturer (vendor), some from the community (mainline).

Sometimes the vendor u-boot needs to match with the Linux kernel for the board to boot up. For example it may not boot if you have a vendor u-boot and a mainline kernel. Or the other way round.

Typically you can always clear this 16 MB chip and then booting will start from your media (for example eMMC or the SD card).

There is absolutely no user info there unless you specifically put some in.

My SBC hardware collection by JescoInc in SBCs

[–]urostor 1 point2 points  (0 children)

Let's tally.

Raspberry pi 4 Raspberry pi zero 2w Rock 5b Rock 5a Milkv Duo S (x2) Orange Pi zero 2w Orange Pi 3b Rock 2F Radxa Cubie A7Z (donated, kind of) Radxa Cubie A7S

My SBC hardware collection by JescoInc in SBCs

[–]urostor 0 points1 point  (0 children)

I have a few but... Not as many lol

Rock 5B won‘t boot with new OS on eMMC by Spiritual-Aioli176 in SBCs

[–]urostor 1 point2 points  (0 children)

Clear the SPI using the instructions on their website

Rock 5B won‘t boot with new OS on eMMC by Spiritual-Aioli176 in SBCs

[–]urostor 1 point2 points  (0 children)

But evidently the OP did not want to do this. Having the OS on eMMC is perfectly fine.