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by lingon
Tue Jan 14, 2020 8:49 am
Forum: Ubuntu
Topic: Latest VideoCore "firmware" for Ubuntu?
Replies: 2
Views: 199

Re: Latest VideoCore "firmware" for Ubuntu?

Thanks for the suggestion to look at the Ubuntu resources. It turned out however that the GPU "firmware" package is created by waveform80 https://www.raspberrypi.org/forums/viewtopic.php?f=131&t=254649&start=50#p1556639 who is also on this forum. So it could be that for at least this particular pack...
by lingon
Wed Jan 08, 2020 9:15 am
Forum: Ubuntu
Topic: Latest VideoCore "firmware" for Ubuntu?
Replies: 2
Views: 199

Latest VideoCore "firmware" for Ubuntu?

The VideoCore "firmware" for Ubuntu is distributed in the package linux-firmware-raspi2 at https://launchpad.net/ubuntu/+source/linux-firmware-raspi2 . The latest Ubuntu release of the GPU "firmware" is from the 15th of August 2019: vcgencmd version Aug 15 2019 12:03:51 Copyright (c) 2012 Broadcom v...
by lingon
Tue Jan 07, 2020 8:35 pm
Forum: General discussion
Topic: EMMC card?
Replies: 4
Views: 256

EMMC card?

The Raspberry Pi4 bootloader EEPROM release notes at https://github.com/raspberrypi/rpi-eeprom/blob/master/firmware/release-notes.md has a line which reads for the version 2019-11-18 - Git b6a7593d6 (BETA) RC1: * Enable high-speed mode for EMMC cards. Where in a Raspberry Pi can an EMMC card be found?
by lingon
Mon Dec 02, 2019 2:22 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 206
Views: 20614

Re: New Pi 4B v1.2?

Comparing the pictures there is 7 soldered pins where the uSD-card is inserted into the reader on the Rev 1.1. and 8 soldered pins on the Rev 1.2. Could this be related to an enhancement of the SD-card speed?
by lingon
Mon Dec 02, 2019 1:42 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 206
Views: 20614

Re: New Pi 4B v1.2?

This link contains images that are claimed to be of the underside of a Raspberry Pi Model 4 B Rev 1.1 and a Rev 1.2. It is shown that there are some changes on the Rev 1.2 above the letter "I" in the text "MICRO SD CARD". http://akkiesoft.hatenablog.jp/entry/20191128/1574911998 Any ideas what these ...
by lingon
Thu Nov 21, 2019 1:43 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 206
Views: 20614

Re: New Pi 4B v1.2?

This new Rev 1.2 string is reported by /proc/cpuinfo and by dmesg, so it has some implications for the software. If the Rev 1.2 changes would be fully transparent for the software, then it would hardly make any sense to report the revision in /proc/cpuinfo. Small component changes on the board might...
by lingon
Sat Oct 19, 2019 7:55 pm
Forum: Ubuntu
Topic: Ubuntu 19.10 (Eoan Ermine) released
Replies: 81
Views: 19732

Re: Ubuntu 19.10 (Eoan Ermine) released

The USB-problem concerning the Raspberry Pi 4GB RAM model might be due to the issue seen earlier that using more RAM than 3072 MB breaks the USB: https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=246766&start=25 The issue was solved by a kernel patch: https://www.raspberrypi.org/forums/viewtop...
by lingon
Mon Aug 19, 2019 11:09 am
Forum: General discussion
Topic: How's it been going with 2 GB vs. 4 GB?
Replies: 12
Views: 2095

Re: How's it been going with 2 GB vs. 4 GB?

Hello Planning to buy my first Pi 4. The 2 GB version is immediately available. The 4 GB version requires a 2 to 3 week wait. What do people generally think? How many have bought the 2 GB version but would really have wanted the 4 GB version? And how many have bought the 4 GB version but clearly se...
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: 4462

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: 945

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: 16942

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: 1169

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: 4250

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: 810

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: 26
Views: 8788

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: 120216

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: 1312

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: 120216

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: 120216

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: 629

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: 161
Views: 116651

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: 161
Views: 116651

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: 301
Views: 298575

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: ------------------------------------------...

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