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by Aardappeltaart
Sat Jun 29, 2019 10:08 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 558
Views: 161774

Re: Raspberry Pi 4 temperature

I opened a new thread about the different firmware shipped (and related thermal and performance issues).
https://www.raspberrypi.org/forums/view ... 3&t=244092
by Aardappeltaart
Sat Jun 29, 2019 9:43 pm
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 4426

Re: Not all RPI 4's are equal?

All Raspberry Pis are fully tested, there is no such thing as lower quality, it is insult to state that.... I'm not stating that. I was just asking about different firmware shipped. W. H. Heydt made the suggestion that the thermal (throttling) issues could be caused by some chips simply running hot...
by Aardappeltaart
Sat Jun 29, 2019 9:27 pm
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 4426

Re: Not all RPI 4's are equal?

W. H. Heydt wrote:
Sat Jun 29, 2019 8:32 pm
And that makes an interesting point... Anybody got a quick, easy way to check the EEPROM program version and date?
He, that's was my question in OP: `and how they can be identified?`
by Aardappeltaart
Sat Jun 29, 2019 7:31 pm
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 4426

Re: Not all RPI 4's are equal?

There are a couple of issues here. The first is, that by the very nature of things, chips vary some from one to the next. The factory tests them to meet basic requirements (will it run at the specified clock speed? do all functions work correctly? can you read and write all the cache? stuff like th...
by Aardappeltaart
Sat Jun 29, 2019 5:20 pm
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 4426

Not all RPI 4's are equal?

The first thing I did after getting my new RPI 4 was connecting it and trying out some simple commands, and yes also measure temperature. vcgencmd measure_temp 61° Wow, that's hot for being idle. But it was confirmed by some reviews, while others seem to have lower temperatures. Then I read this pos...
by Aardappeltaart
Sat Jun 29, 2019 5:06 pm
Forum: General discussion
Topic: Very simple OTG on pi4
Replies: 8
Views: 3133

Re: Very simple OTG on pi4

I got the RPI4 working and connected to the internet with just an USB cable from my laptop using Ethernet OTG. Like described here: https://dev.webonomic.nl/4-ways-to-conn ... e-internet Dunno if my laptop delivers enough juice to do something fancy, but it's already sweating doing nothing: 61° idle.
by Aardappeltaart
Sat Jun 29, 2019 5:00 pm
Forum: Advanced users
Topic: rPi4 Data over USB C/Power Port?
Replies: 7
Views: 1155

Re: rPi4 Data over USB C/Power Port?

If your PC's USB port can deliver 3 Amps, or whatever the Pi and anything attached needs. I doubt 3A is needed for a headless RPI4 with all USB ports vacant. Anyhow I just plugged it into my laptop and powered the RPI4 from an USB port with a USB cable I used to charge my Samsung Note and a small m...
by Aardappeltaart
Sat Jun 29, 2019 4:53 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 558
Views: 161774

Re: Raspberry Pi 4 temperature

AFAIK the firmware is not available yet.

I do wonder which models are considered `early production units` and how they are marked.

Mine has a 2018 copyright. :)

Do you all have `ASPM disabled` in lspci?
by Aardappeltaart
Sat Jun 29, 2019 2:15 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 558
Views: 161774

Re: Raspberry Pi 4 temperature

Or you need new firmware for the USB Controller. “some thermal optimizations that are not installed by default on early production units.” My RPI4 is also running 60° idle. And lspci is showing sudo lspci -vvv | grep ASPM LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- As it seems ASPM (Activ...
by Aardappeltaart
Sat Jun 29, 2019 11:17 am
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 17
Views: 5358

Re: DVB T2 zenders ontvangen (TV HAT)

@jan64, en wat is de framerate? Dat kan ik nergens vinden 24, 30 of 50? @djwoef, de TV-HAT ondersteunt DVB-T2 dus ook HEVC. Daarvoor heb je die August stick niet nodig. De vraag is meer of de RPI genoeg power heeft om HEVC te decoderen, een RPI2 niet volgens @Spirntv, een RPI3 en 3+ wrs wel zolang h...
by Aardappeltaart
Sat Jun 29, 2019 10:56 am
Forum: Advanced users
Topic: rPi4 Data over USB C/Power Port?
Replies: 7
Views: 1155

Re: rPi4 Data over USB C/Power Port?

Yes also Ethernet OTG is working, so you can connect and power the RPI4 with just a USB cable. Like described here: https://dev.webonomic.nl/4-ways-to-connect-your-raspberry-pi-4-to-the-internet I do wonder if USBBoot will be supported for the RPI4, so it can be used with just an USB cable, no sd-ca...
by Aardappeltaart
Wed Jun 26, 2019 3:18 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 895
Views: 97945

Re: Raspberry Pi 4 Thread - general discussion

Just received my new Pi4 2GB: pi@raspberrypi:~ $ vcgencmd get_mem arm arm=948M vcgencmd get_mem gpu gpu=76M Where is the 2GB?? Or does it mean that 1GB max can be allocated to the GPU? Pff: pi@raspberrypi:~ $ free -h total used free shared buff/cache available Mem: 1.9Gi 57Mi 1.6Gi 8.0Mi 225Mi 1.8Gi...
by Aardappeltaart
Wed Jun 12, 2019 9:03 am
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 17
Views: 5358

Re: DVB T2 zenders ontvangen (TV HAT)

@Sprintv Zit in Amsterdam, dus pas 9 juli gaan we hier over op h265, maar vast de TV Hat aangeschaft. In ieder geval een vooruitgang boven mijn oude USB gagdet van de Aldi. Betere ontvangst en energie-zuiniger. Benieuwd of de rpi3 h265 straks kan afspelen op fhd. Welke resoluties gebruikt de KPN? Ne...
by Aardappeltaart
Fri Apr 06, 2018 9:50 am
Forum: Raspbian
Topic: Add a default initrd to Raspbian LIte to ease Zero USB ethernet
Replies: 0
Views: 272

Add a default initrd to Raspbian LIte to ease Zero USB ethernet

To ease the use of the usbboot/rpiboot utility for a Zero, let's add a default initrd to the Raspbian Lite image with support for Zero Ethernet USB. That means an nitrd compiled (~5.8MB) with the following modules. - g_ether - libcomposite - u_ether - udc-core - usb_f_rndis - usb_f_ecm That would ma...
by Aardappeltaart
Thu Mar 29, 2018 1:13 pm
Forum: Beginners
Topic: Running the Pi without an SD card
Replies: 10
Views: 45631

Re: Running the Pi without an SD card

It's is possible to do, since USBBoot was introduced:

See access GPIO pins on a Zero without SD card or this post describes to run Stretch Lite on a Zero without SD card.
by Aardappeltaart
Thu Mar 29, 2018 1:01 pm
Forum: Bare metal, Assembly language
Topic: Zero USB booting
Replies: 10
Views: 5623

Re: Zero USB booting

This blogpost describes a way to run Stretch Lite on Zero without SD card.
https://dev.webonomic.nl/how-to-run-or- ... an-sd-card

Uses Initramfs and a NFS for the rootfs.
by Aardappeltaart
Mon Oct 16, 2017 9:21 am
Forum: Python
Topic: Pi3D rendering two images on screen problem
Replies: 3
Views: 811

Re: Pi3D rendering two images on screen problem

Thx paddyg. I was puzzled the most by the black image, indeed that is a memory split issue. The GPU needs at least 128MB for this, I guess, so I got that working. Foolish me, I thought about that earlier, but forgot to try. And the placement on the display, I get that the it's the center origin . To...
by Aardappeltaart
Sat Oct 14, 2017 8:09 am
Forum: Python
Topic: Pi3D rendering two images on screen problem
Replies: 3
Views: 811

Pi3D rendering two images on screen problem

Just starting with Pi3d and I try to show two images next to each other, but my code only shows one picture and the other one black DISPLAY = pi3d.Display.create(0,0,1920, 1080, frames_per_second=4) DISPLAY.set_background(0.2,0,0,1) shader1 = pi3d.Shader("uv_flat") shader2 = pi3d.Shader("uv_flat") C...
by Aardappeltaart
Thu Aug 18, 2016 8:30 am
Forum: Troubleshooting
Topic: NFS automount /etc/fstab with Jessie
Replies: 32
Views: 47413

Re: NFS automount /etc/fstab with Jessie

The easiest workaround (for AutoFS):

Add to etc/rc.local:
`service rpcbind restart`

Somehow AFAICS there is a bug in Jessie so that RPCBind is not starting at boot.
So we simply start it again. All other solutions like did not work after reboot.

BTW also `service autofs restart` works.
by Aardappeltaart
Thu Mar 31, 2016 9:51 am
Forum: Raspbian
Topic: Docker version to old in Raspbian
Replies: 4
Views: 1306

Docker version to old in Raspbian

Installing docker on Raspbian is easy: sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install docker.io Unfortunately that version (1.3) is to old to pull in images, we need at least version 1.6 since December. `On December 7, 2015, pulls via clients 1.5 and earlier will be disabled. Onl...
by Aardappeltaart
Fri Mar 04, 2016 11:10 am
Forum: Troubleshooting
Topic: RPI2 not booting anymore with HDMI plugged in
Replies: 1
Views: 383

Re: RPI2 not booting anymore with HDMI plugged in

Can someone say something sensible about this? What is supposed to happen when a RPI is unintentionally connected to a HDMI MHL power delivering device. Can it hurt? I'm completely puzzled. After another OSMC update, the issue seems to be gone. So the little machine has more magic that I thought, (b...
by Aardappeltaart
Thu Mar 03, 2016 11:46 am
Forum: Troubleshooting
Topic: RPI2 not booting anymore with HDMI plugged in
Replies: 1
Views: 383

RPI2 not booting anymore with HDMI plugged in

RPI2 with NOOBS install, Raspbian, OpenElec and OSMC. After I updated OSMC and enabled overclocking my RPI2 refused to boot with HDMI cable attached. It does reboot. As I use an HDMI switch (also have RPI1), it seems some power is delivered over HDMI to the RPI2 (HDMI MHL??), when I switch off the U...

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