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by ssvb
Tue Mar 07, 2017 10:04 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 578247

Re: Overclocking

You already have the definitive maximum settings as the defaults. Everything higher than this is a gamble.
by ssvb
Sun Jan 29, 2017 8:45 pm
Forum: OpenGLES
Topic: Is it not possible to run my OpenGLES2 game in a window?
Replies: 3
Views: 3238

Re: Is it not possible to run my OpenGLES2 game in a window?

The integration of the OpenGL ES driver with the X11 window system is needed in order to support this nicely. The xf86-video-fbturbo DDX currently only supports the Mali GPU, but not VC4. Some years ago I asked the Raspberry Pi developers if they wanted to have something like this also working on th...
by ssvb
Sat Oct 01, 2016 8:44 pm
Forum: General discussion
Topic: Pi3 incorrect results under load (possibly heat related)
Replies: 105
Views: 51834

Re: Pi3 incorrect results under load (possibly heat related)

Underclocking as arm_freq=900 core_freq=250 sdram_freq=450 resulted in stable operation. Even at these settings, CPU temperatures reached 84.9'C as reported by vcgencmd measure_temp and throttling to 756Mhz was observed. The linpack test averaged 4.4 Gflops and passed the residual check. This is ab...
by ssvb
Tue May 31, 2016 3:08 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

Yes, the hardware video decoder was never supposed to be documented. But it had been successfully reverse engineered using some clever tricks , such as using valgrind to trace accesses to the hardware registers, etc. And nowadays there is a hardware registers documentation as a result of these reve...
by ssvb
Tue May 31, 2016 2:26 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

As a side note, I looked at the AllWinner docs that were made so much play of from the Orange Pi One video . There's a big section omitted for the Video Engine (codecs block), although there does seem to be a driver being upstreamed - even that darling seemingly has some restricted sections. Yes, t...
by ssvb
Sat May 28, 2016 11:28 am
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

Heater, You are right about the world indeed being a dangerous and unfair place. Still the worst blobs to watch out are the ones, which have full access to the data in RAM and at the same time have the means to communicate with the outside world on their own. The potential backdoors in the USB or SD...
by ssvb
Fri May 27, 2016 5:45 pm
Forum: Off topic discussion
Topic: Dave Jones - Orange Pi One vs Raspberry Pi 2
Replies: 8
Views: 6674

Re: Dave Jones - Orange Pi One vs Raspberry Pi 2

From what I've read the Armbian distro he used still has a 3.4.x kernel, and 3.4.x was introduced four years ago. Ouch. There is the mainline kernel support too. But it is a bit experimental at the moment, because the Allwinner H3 SoC is relatively new. But most of the important drivers (USB, Ether...
by ssvb
Fri May 27, 2016 5:28 pm
Forum: Off topic discussion
Topic: Dave Jones - Orange Pi One vs Raspberry Pi 2
Replies: 8
Views: 6674

Re: Dave Jones - Orange Pi One vs Raspberry Pi 2

Dave Jones, the famous blogger on matters electronic, compares and contrasts the Raspberry Pi 2 and Orang Pi One. https://www.youtube.com/watch?v=TEyU1zSqFwU Bottom line: Orange Pi, very cheap, performs well, needs heat sink, terrible support. If you have watched the whole video, then you have prob...
by ssvb
Fri May 27, 2016 5:02 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

You are basically confirming that the Raspberry Pi is deeply infested with quite a large piece of proprietary code. I'm not very happy to hear that :( And having proprietary closed source firmware is much worse that having proprietary closed source 3D drivers. Because 3D acceleration is an optional...
by ssvb
Fri May 27, 2016 4:53 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

This closed source blob has been public knowledge since the Pi1 was first released four years ago! DId you miss the memo? No, I did not miss anything. Just this aspect of the Raspberry Pi is still as ugly as it used to be. That's why it is always nice to have better alternatives. Still managed to s...
by ssvb
Thu May 19, 2016 10:23 am
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

The bootloader is pretty minimal. Just starts up the VC4 (plus a few other bits and pieces). Not sure what replacing just the bootloader achieves though. The VC4 needs to start up to provide HDMI output, get the 3D up and running, run the ISP. Without the blob on the VC4, most features are unavaila...
by ssvb
Wed May 18, 2016 3:00 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

Anyone with an Orange Pi or Bananana Pi should check the kernel version they are running. There is a nasty security bug in the current version for those systems. http://www.theregister.co.uk/2016/05/09/allwinners_allloser_custom_kernel_has_a_nasty_root_backdoor/ (The Raspberry Pi is not affected by...
by ssvb
Wed May 18, 2016 2:47 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

I see that they got the price down by removing the one feature that that would otherwise have made it of interest to me. Which feature? This board had been in fact designed, based on the feedback from the users (as an upgraded variant of a highly successful Orange Pi PC board). All the USB ports ar...
by ssvb
Mon May 02, 2016 3:20 pm
Forum: Off topic discussion
Topic: Orange Pi Plus 2E SBC launched
Replies: 58
Views: 15775

Re: Orange Pi Plus 2E SBC launched

I see that they got the price down by removing the one feature that that would otherwise have made it of interest to me. Which feature? This board had been in fact designed, based on the feedback from the users (as an upgraded variant of a highly successful Orange Pi PC board). All the USB ports ar...
by ssvb
Mon May 02, 2016 3:03 pm
Forum: Off topic discussion
Topic: Pine64+ a good deal?
Replies: 191
Views: 51107

Re: Pine64+ a good deal?

https://hackaday.com/2016/04/21/pine64-the-un-review/ Interesting (un)review. Supports my contention that the small hardware houses are falling on teh faces when it comes to software, and that that is going to doom any significant sales. Well, if you read the comments there, a lot of users have the...
by ssvb
Fri Mar 11, 2016 11:45 am
Forum: Off topic discussion
Topic: RPi 1, RPi 2, RPi 3 vs. OPi 1
Replies: 35
Views: 5954

Re: RPi 1, RPi 2, RPi 3 vs. OPi 1

Net boot is huge for anyone looking to build with these things in a low cost manner and as far as I know only the pi people are paying attention so far to this point. It may come as a surprise to you, but network boot is a pretty generic feature, which had been around long before the Raspberry Pi b...
by ssvb
Thu Mar 10, 2016 6:48 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

This is a useful paragraph. I was originally considering underclocking because of some of the reports on these forums, but in real use my Pi 3 hasn't actually got very warm at all. Monitoring temperature using the internal facility I am seeing 40-45C with no heatsink fitted, the Pi3 sitting on a de...
by ssvb
Wed Mar 09, 2016 8:02 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

I would suggest that any processor load test should not depend on access to files or network etc. This introduces a lot of unknowns and variability into the test. SD cards vary considerably in the speed for example, thus the amount of actual CPU work time will vary from case to case. As such a larg...
by ssvb
Wed Mar 09, 2016 7:38 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

We came across the overheating issue in our internal engineering review of this product. 207F (97C) with CPU load only in 71F (22C) ambient. We attempted to measure CPU+GPU load but the board crashed on numerous attempts. We saw temperatures go up to 210+F. This is a bit suspicious, because thermal...
by ssvb
Wed Mar 09, 2016 7:28 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

This is a useful paragraph. I was originally considering underclocking because of some of the reports on these forums, but in real use my Pi 3 hasn't actually got very warm at all. Monitoring temperature using the internal facility I am seeing 40-45C with no heatsink fitted, the Pi3 sitting on a de...
by ssvb
Fri Mar 04, 2016 9:00 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

So how aggressive is the throttling? How much does it scale down to when it reaches the temp limit? I'm wondering if I would have been better off with a Pine64 now The A64 SoC in Pine64 is using the same 40nm manufacturing process as BCM2837 in Raspberry Pi 3, so the power consumption is likely com...
by ssvb
Fri Mar 04, 2016 8:18 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thanks for the numbers which are very interesting. So a "minerd" or "cpuburn-a53" combined with some VC4 glbench2 would give interesting temperaturs on a Pi3, I suppose. :-) Yes, Cortex-A53 is a true dual issue superscalar with a full width NEON unit. It has 2x faster peak performance per MHz compa...
by ssvb
Fri Mar 04, 2016 7:37 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Whats the point with a 1200 Mhz clockspeed if it can only maintain it a few minutes? Yes, this behavior is new for us Pi users. So far with our Pi1 and Pi2 we never needed to worry about any overheating. So it's indeed a bit disappointing when you intend to use the Pi3 inside a case – you won't be ...
by ssvb
Wed Mar 02, 2016 8:53 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 94994

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Has anyone actually tested the Raspberry Pi 3 throttling behaviour with heavier workloads (such as some decently NEON optimized software or a cpuburn application)? I have already asked this question in viewtopic.php?p=916941#p916941
by ssvb
Tue Mar 01, 2016 12:05 pm
Forum: General discussion
Topic: The Raspberry Pi 3 Model B Q&A thread
Replies: 457
Views: 201849

Re: The Raspberry Pi 3 Model B Q&A thread

Maybe raspi.tv will update their page soon. I find it pretty accurate. As found here: http://raspi.tv/2015/raspberry-pi2-power-and-performance-measurement One problem is that they are using a very light workload when measuring power consumption. Also the "sysbench --test=cpu --cpu-max-prime=20000 -...

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