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by lingon
Mon Nov 02, 2015 7:03 am
Forum: Graphics, sound and multimedia
Topic: So what's the state of WebGL?
Replies: 13
Views: 2653

Re: So what's the state of WebGL?

https://github.com/Metrological/buildroot Which builds a buildroot with a really simple webbrowser with WebGL, using their layer between WebGL and OpenGLES. Then, there's Anholt's mesa drivers, which I've installed using the readymade images, and that works as well with WebGL, making a OpenGL drive...
by lingon
Mon Nov 02, 2015 6:56 am
Forum: General discussion
Topic: Is there a solution to enable webgl on raspberry pi ?
Replies: 2
Views: 498

Re: Is there a solution to enable webgl on raspberry pi ?

There is discussion on this topic in this thread viewtopic.php?f=38&t=120978.
by lingon
Tue Sep 22, 2015 2:28 pm
Forum: General discussion
Topic: Video Core Source – 1 Year On
Replies: 47
Views: 10816

Re: Video Core Source – 1 Year On

I have downloaded gohais image 20150808-1312-vc4-image.zip from http://sukzessiv.net/~gohai/vc4-buildbot/build/ . With that I was able to start tuxracer. It was not playable and there were problems with drawing the screen, but it looks very promising. I tried ephiphany on that same image, but it wou...
by lingon
Fri Sep 11, 2015 4:25 am
Forum: General discussion
Topic: minecraft on RasPi2
Replies: 3
Views: 617

Re: minecraft on RasPi2

It can be made to run currently, but the performance is not good. You can have a look on this thread:
viewtopic.php?p=787240#p787240
It will be interesting to see what the OpenGL driver performance ends up to be when it matures and gets optimized.
by lingon
Tue Sep 08, 2015 4:29 pm
Forum: General discussion
Topic: WOT ? No official display thread ?
Replies: 18
Views: 1998

Re: WOT ? No official display thread ?

fruit-uk wrote:Looks good, order placed too.

What's Gordon going to do in his spare time now?
Well, there is the 10" screen to work on that might arrive sometime in the future, see this video at 4 min 31 s https://www.youtube.com/watch?v=k7byf2h_bT8 :)
by lingon
Fri Sep 04, 2015 5:56 pm
Forum: General discussion
Topic: Small HDMI-displays
Replies: 1
Views: 343

Small HDMI-displays

As there is no sign of the DSI-display I have been looking for small HDMI screens to be used with a Raspberry Pi. These are the ones I'm currently aware of: 7", 1024x600 http://www.neosecsolutions.com//products.php?61&cPath=21 9", 1280x800 HDMIPi http://hdmipi.com/ 7"-15" 1920x1080 http://www.beetro...
by lingon
Mon Apr 06, 2015 6:30 pm
Forum: Troubleshooting
Topic: RPi freezes in about a week. Please HELP
Replies: 24
Views: 2984

Re: RPi freezes in about a week. Please HELP

Do you have your Raspberry Pi in a case? Does the case have adequate perforations on the top to allow sufficient air to flow? The USB-Eternet chip has a lower temperature limit than the CPU, and it actually runs hotter then the CPU. I have seen lockups on my idling Raspis (overclocked) on a timescal...
by lingon
Fri Feb 13, 2015 8:20 pm
Forum: General discussion
Topic: The Raspberry Pi 2 Q&A thread
Replies: 442
Views: 73499

Re: The Raspberry Pi 2 Q&A thread

It would be nice with a complete list of changes between the BCM2835 and BCM2836. Are there other changes than the following? * CPU address space increased from 512 MB to 1 GB * 700 MHz ARMv6 core -> quad 900 MHz ARMv7 cores * new 512 kB L2 ARMv7 cache * hardware counter for the USB FIQ interrupts W...
by lingon
Fri Feb 13, 2015 8:00 pm
Forum: Troubleshooting
Topic: Only 2.85 BogoMIPS
Replies: 4
Views: 659

Only 2.85 BogoMIPS

On a Raspberry Pi Model B I see only 2.85 BogoMIPS, which seems very strange as it is usually around 700 on the Raspberry Pi? uname -a Linux rpicam2 3.18.7+ #755 PREEMPT Thu Feb 12 17:14:31 GMT 2015 armv6l GNU/Linux cat /proc/cpuinfo processor : 0 model name : ARMv6-compatible processor rev 7 (v6l) ...
by lingon
Wed Feb 04, 2015 7:51 pm
Forum: General discussion
Topic: The Raspberry Pi 2 Q&A thread
Replies: 442
Views: 73499

Re: The Raspberry Pi 2 Q&A thread

pi@pi2 ~ $ sudo hdparm -Tt /dev/mmcblk0p2 /dev/mmcblk0p2: Timing cached reads: 974 MB in 2.00 seconds = 486.81 MB/sec Timing buffered disk reads: 56 MB in 3.09 seconds = 18.11 MB/sec pi@pi2 ~ $ pi@pi2 ~ $ sudo hdparm -Tt /dev/sda2 /dev/sda2: Timing cached reads: 960 MB in 2.00 seconds = 480.20 MB/s...
by lingon
Wed Feb 04, 2015 6:22 am
Forum: General discussion
Topic: The Raspberry Pi 2 Q&A thread
Replies: 442
Views: 73499

Re: The Raspberry Pi 2 Q&A thread

It would be nice if someone with a Raspberry Pi 2 would run

Code: Select all

hdparm -Tt /dev/mmcblk0p2
against the micro SD card as well as against a USB-drive

Code: Select all

hdparm -Tt /dev/sda1
and post the results here. The expected improvement in cached reads would be interesting to see.
by lingon
Mon Oct 27, 2014 3:29 pm
Forum: Advanced users
Topic: Memory performance with kernel 3.12.30+ #717 has increased
Replies: 0
Views: 388

Memory performance with kernel 3.12.30+ #717 has increased

The changelog for the firmware update that comes with kernel 3.12.30+ #717 says: "kernel: Improve __copy_to_user and __copy_from_user performance Provide a __copy_from_user that uses memcpy. On BCM2708, use optimised memcpy/memmove/memcmp/memset implementations." This update gives a significant perf...
by lingon
Tue Sep 09, 2014 2:50 pm
Forum: Camera board
Topic: MMAL Motion - tuning & optimisations
Replies: 157
Views: 87341

Re: MMAL Motion - tuning & optimisations

Firmware is already out with commit https://github.com/Hexxeh/rpi-firmware/commit/34662b3f2af52e1df897553f2a5a7455035adf85 The likelihood is that you're already running the binned modes as they will be automatically selected if you're asking for 30fps - I wouldn't fret about getting that in as a ne...
by lingon
Sat Aug 30, 2014 6:03 pm
Forum: Camera board
Topic: MMAL Motion - tuning & optimisations
Replies: 157
Views: 87341

Re: MMAL Motion - tuning & optimisations

Would it be possible to use the 2x2 binning modes with MMAL Motion with the new parameter MMAL_PARAMETER_CAMERA_CUSTOM_SENSOR_CONFIG ?
http://www.raspberrypi.org/forums/viewt ... 43&t=85714
This would be great for low light situations...
by lingon
Wed Feb 12, 2014 8:41 pm
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 302
Views: 239216

Re: SD Card Benchmarks

I measured one of the Raspberry PI NOOBS 8 GB uSD cards that I received today in a native SD cardreader in a HP 4330s laptop. The cards are marked: MMCTR08GUBCH-ML K PSX773ZV 351 Made in PHILIPPINES These are the CrystalDiskmark results for one of my cards: ------------------------------------------...
by lingon
Fri Jan 31, 2014 6:39 am
Forum: Advanced users
Topic: Is UHS-I support coming?
Replies: 1
Views: 637

Re: Is UHS-I support coming?

It would be nice if Gordon would elaborate on his use of the word "yet" in this context.
by lingon
Mon Jan 20, 2014 3:08 pm
Forum: Advanced users
Topic: Is UHS-I support coming?
Replies: 1
Views: 637

Is UHS-I support coming?

The SD-hardware in the Raspberry Pi lacks one line to drive to voltage down to reach higher SD speed modes. When the 8 GB NOOBS SD-card was announced Gordon wrote this in the comments to the release note: But the card you’ve both has another mode that we don’t (yet) support for UHS (Ultra High Speed...
by lingon
Wed Jan 15, 2014 5:55 am
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 302
Views: 239216

Re: SD Card Benchmarks

jdb wrote:NOOBS 8GB SD card w/ USB3.0 reader

MMCTR08GUBCH-ML
Thanks for sharing the NOOBS card USB3.0 results as well!
by lingon
Tue Jan 14, 2014 9:09 pm
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 302
Views: 239216

Re: SD Card Benchmarks

mikerr wrote:8GB Raspberry PI NOOBS card:

MMCTR08GUBCH-ML
D HTIA02GB 343
Made in KOREA

Benchmarks looking really good, beating the sandisk !
Thanks for sharing this result! I agree that it looks like a very good card for random writes.
by lingon
Sat Jan 11, 2014 8:33 pm
Forum: Camera board
Topic: Official V4L2 driver
Replies: 506
Views: 308895

Re: Official V4L2 driver

I'm submitted a change to night mode that increases the exposure to 0.97s (max), increases the max analog gain to 8 , and increases the total gain (analog* digital) to 16 (so max digital gain = 2). Not sure when the next firmware drop will be though. Certainly seem to make a difference in v. dark c...
by lingon
Fri Dec 27, 2013 9:34 am
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 302
Views: 239216

Re: SD Card Benchmarks

I found this link with CrystalDiskMark results for a SD-card with a similar but not exactly same type at http://r-2ch.com/t/smartphone/1369656716/ The NOOBS card is MMCTR08G3ACH-QNJMK and the benchmarked card is MMCTR08G3ACH-MM. The result for the MMCTR08G3ACH-MM card is not so impressive for random...
by lingon
Fri Dec 27, 2013 9:24 am
Forum: Troubleshooting
Topic: rpi-update fails when overclocking
Replies: 3
Views: 574

Re: rpi-update fails when overclocking

The SD-driver has been improved a lot lately, thanks to the hard work of the developers. Previously I have too been bitten by crashed filesystems on three different Raspberry Pi machines. With the updated SD-driver I have seen no issues so far. I have previously run the overclocking stability test a...
by lingon
Thu Dec 26, 2013 10:40 am
Forum: Troubleshooting
Topic: rpi-update fails when overclocking
Replies: 3
Views: 574

rpi-update fails when overclocking

After the SD-driver bugfixes I have started to test once more with overclocking. On a 512 MB Raspberry Pi Revision : 000e rpi-update failed with this error message: ... Cloning into '//root/.rpi-firmware'... remote: Counting objects: 3203, done. remote: Compressing objects: 100% (2675/2675), done. e...
by lingon
Wed Dec 18, 2013 6:57 am
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 302
Views: 239216

Re: SD Card Benchmarks

I wonder if someone with the Raspberry Pi NOOBS SD-card by Samsung MMCTR08G3ACH-QNJMK has run CrystalDiskMark or IOzone benchmarks on it? The announcement of the NOOBS card at http://www.raspberrypi.org/archives/4536 says the card should be fast for random I/O: Fast, pre-programmed, high-capacity ca...
by lingon
Tue Dec 17, 2013 7:10 pm
Forum: General discussion
Topic: Porting the Wayland graphics engine to the BCM2835
Replies: 3
Views: 1055

Re: Porting the Wayland graphics engine to the BCM2835

While waiting for Wayland for the Raspberry Pi you can enjoy a faster X11 driver already today . See this thread for details http://www.raspberrypi.org/forum/viewtopic.php?f=63&t=45746 You can install it on Raspbian with: sudo apt-get update && sudo apt-get install xserver-xorg-video-fbturbo fbturbo...

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