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by Aardappeltaart
Tue Sep 17, 2019 11:24 am
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 16
Views: 4548

Re: DVB T2 zenders ontvangen (TV HAT)

Vandaag is weer een wijziging doorgevoerd in de frequenties voor de regio Amsterdam, Wormer, Haarlem en Hilversum. https://www.kpn.com/service/televisie/digitenne-kanaalomzetting.htm Dus TVHeadend opnieuw configureren: In Amsterdam zijn de free to air zenders nu te vinden in de mux 578 (vh 618). Om ...
by Aardappeltaart
Fri Jul 19, 2019 8:40 am
Forum: Advanced users
Topic: Is it possible to connect a domain to a raspberry pi without exposing my PI address?
Replies: 7
Views: 506

Re: Is it possible to connect a domain to a raspberry pi without exposing my PI address?

You can run Tor on a pi. https://2019.www.torproject.org/docs/tor-onion-service.html.en @Aardappeltaart Please explain how that has any relevance to the OP's question. Quoting info from the link Tor allows clients and relays to offer onion services. That is, you can offer a web server, SSH server, ...
by Aardappeltaart
Wed Jul 17, 2019 5:47 pm
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 16
Views: 4548

Re: DVB T2 zenders ontvangen (TV HAT)

Hier staat Utrecht pas per 1-10-2019 https://www.kpn.com/service/televisie/digitenne-kanaalomzetting.htm PDF Planning Frequentiewijziging https://www.kpn.com/w3/file?uuid=141214bc-ac20-459f-b5f7-20732700ba80&owner=8de86c61-bdc8-4848-872e-e5b380e682fc&contentid=34150 https://nl.wikipedia.org/wiki/UHF...
by Aardappeltaart
Tue Jul 16, 2019 10:19 am
Forum: Troubleshooting
Topic: Chromium-browser not creating screenshot
Replies: 8
Views: 351

Re: Chromium-browser not creating screenshot

Probably because the code is broken. Get you coding pencil, your pencil sharpener and a coding pad. The source code is available. Thanks for the advice, IMHO a bug report is the better option here. Anybody knows the appropriate place for that, could be related to the special RPI fixes (GPU accelera...
by Aardappeltaart
Mon Jul 15, 2019 7:43 pm
Forum: Troubleshooting
Topic: Chromium-browser not creating screenshot
Replies: 8
Views: 351

Re: Chromium-browser not creating screenshot

yeah, but

Code: Select all

giblib error: Can't open X display. It *is* running, yeah?
And not using realvnc

AFAIK Chromium-browser can be installed on all debian/ubuntu based server installs (x64 & arm) to run headless/

Just tried it on Ubuntu Server on x64 and ARM, so why can't it be done on the Pi?
by Aardappeltaart
Mon Jul 15, 2019 4:35 pm
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 16
Views: 4548

Re: DVB T2 zenders ontvangen (TV HAT)

Weet iemand welke instellingen ik voor de tvheadend moet gebruiken voor ontvangst van de dvb-t2 zenders in utrecht? Welke mux instellingen? Wat moet ik doen voor een re-scan? De ontvangst van dvb-t zenders vóór 9 juli was prima (npo 1-3, tv-utrecht), maar ik kan nu niets meer ontvangen. Ik heb de m...
by Aardappeltaart
Mon Jul 15, 2019 4:20 pm
Forum: Troubleshooting
Topic: Chromium-browser not creating screenshot
Replies: 8
Views: 351

Re: Chromium-browser not creating screenshot

Thx, but can you run scrot on a headless Pi?

--screenshot --headless is for running chromium on servers, and create screenshots for automated testing, so without X11

Quite nice actually.

Should file a bug report then, but where?

(BTW also selenium could not create screenshot)
by Aardappeltaart
Fri Jul 12, 2019 10:02 am
Forum: Troubleshooting
Topic: Chromium-browser not creating screenshot
Replies: 8
Views: 351

Chromium-browser not creating screenshot

I'm trying out the chromium-browser on a headless RPI4 Raspbian Lite: chromium-browser --version Chromium 74.0.3729.157 Built on Raspbian , running on Raspbian 10 I'm not able to create a screenshot running headless: chromium-browser --window-size=1280,1024 --screenshot --headless https://raspberryp...
by Aardappeltaart
Tue Jul 09, 2019 9:32 pm
Forum: Nederlands
Topic: DVB T2 zenders ontvangen (TV HAT)
Replies: 16
Views: 4548

Re: DVB T2 zenders ontvangen (TV HAT)

De TV-Hat werkt goed met DVB-T2. Het is even zoeken/scannen/refreshen in TV-HEADEND voor de nieuwe services, maar dan heb je NPO1, NPO2, NPO3 en TV NoordHolland in FHD 1920x1080. Prima kwaliteit met binnen-antenne. En de RPI3+ (met TV-hat) kan het net niet/wel afspelen. Grootste probleem is de warmt...
by Aardappeltaart
Tue Jul 02, 2019 7:54 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 69
Views: 15778

Re: Raspberry Pi 4 - new VLI firmware issues

NEW firmware: temperature dropped ~3° nothing in syslog. Had a bit fluctuating results in iozone with old AND new firmware on SD-card, USB HD and USB flash drive, running sequential test. In new firmware lower (random) read/write on USB flashdrive (~15%) BTW After reflashing old firmware, Pi did not...
by Aardappeltaart
Tue Jul 02, 2019 9:02 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 532
Views: 135748

Re: Raspberry Pi 4 temperature

The A72 use more power because they are twice as powerful. Simple as that. Not sure why people would think that would not be the case. Probably because they have phones that became more powerful AND more energy efficient, while not running any hotter in the last years. I already dubbed the official...
by Aardappeltaart
Mon Jul 01, 2019 5:25 pm
Forum: General discussion
Topic: RPI4, out of order and Spectre vulnerabilities
Replies: 27
Views: 2060

Re: RPI4, out of order and Spectre vulnerabilities

pi@raspberrypi:~ $ zcat /proc/config.gz | grep SPECTRE CONFIG_CPU_SPECTRE=y Basically the main mitigations within the kernel are in place. Thx 6by9. That is useful info. Interestingly mitigations are also in place at my RPI2, which is not vulnerable at all. pi@pi2:~ $ zcat /proc/config.gz | grep SP...
by Aardappeltaart
Mon Jul 01, 2019 2:41 pm
Forum: General discussion
Topic: RPI4, out of order and Spectre vulnerabilities
Replies: 27
Views: 2060

Re: RPI4, out of order and Spectre vulnerabilities

pi@raspberrypi:~ $ zcat /proc/config.gz | grep SPECTRE CONFIG_CPU_SPECTRE=y Basically the main mitigations within the kernel are in place. Thx 6by9. That is useful info. Interestingly mitigations are also in place at my RPI2, which is not vulnerable at all. pi@pi2:~ $ zcat /proc/config.gz | grep SP...
by Aardappeltaart
Mon Jul 01, 2019 9:54 am
Forum: General discussion
Topic: FLAC working on Rpi4 1 GB, not working on 4 GB
Replies: 15
Views: 1400

Re: FLAC working on Rpi4 1 GB, not working on 4 GB

Hmnm, I suspect the bounce buffer code for handling PCI memory over 3GB. Do you have anything plugged in to the USB? If you limit the amount of memory available to linux, does the problem go away? Add "total_mem=1024" or "total_mem=2048" or "total_mem=3072" to /boot/config.txt. If they all work OK,...
by Aardappeltaart
Mon Jul 01, 2019 9:33 am
Forum: General discussion
Topic: Pi 4 with USB A to C cable
Replies: 5
Views: 474

Re: Pi 4 with USB A to C cable

Is anybody using a Pi 4 and powering it with an A to C cable. It is my understanding that if they are in spec they will have a 56k resistor and will force the device to negotiate for higher current over 500ma. I don't think the previous versions of the Pi ever negotiated for power as there were no ...
by Aardappeltaart
Mon Jul 01, 2019 9:07 am
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 3949

Re: Not all RPI 4's are equal?

0.357 watt difference is significant. Yes, and IMHO the saving is much needed. Thx to CNX-software for benching, Hias for giving details and thx to jamesh for demystifying the pleonasm spoken by the Great Wizard of Pi. In memory of that, hereby I declare that the honorable title of Oracle of DelPi ...
by Aardappeltaart
Mon Jul 01, 2019 8:18 am
Forum: General discussion
Topic: RPI4, out of order and Spectre vulnerabilities
Replies: 27
Views: 2060

Re: RPI4, out of order and Spectre vulnerabilities

Re-read my post. I didn't state that it's currently an academic curiosity on A72 - only when mitigations are applied. I did read it . That is why I did a grep on retpoline . You sounded like if you do a and b (including retpoline) then it is practically solved. I doubt that, mitigations are mitigat...
by Aardappeltaart
Sun Jun 30, 2019 6:24 pm
Forum: General discussion
Topic: RPI4, out of order and Spectre vulnerabilities
Replies: 27
Views: 2060

Re: RPI4, out of order and Spectre vulnerabilities

On my AMD Ubuntu 18.04: cat /sys/devices/system/cpu/vulnerabilities/* Not affected Not affected Not affected Not affected Mitigation: __user pointer sanitization Mitigation: Full AMD retpoline, STIBP: disabled, RSB filling As you can see, Meltdown is only an issue on Intel, and Ubuntu is nicely repo...
by Aardappeltaart
Sun Jun 30, 2019 12:01 pm
Forum: General discussion
Topic: RPI4, out of order and Spectre vulnerabilities
Replies: 27
Views: 2060

RPI4, out of order and Spectre vulnerabilities

I always consider this post by Eben as one of the most informative and best educational posts about modern CPU and (potential) security issues. But now the RPI4 has out-of-order A72 cores, which have Speculative Processor Vulnerabilities (17/Jun/2019) Processor Variant 1 Variant 2 Variant 3 Variant ...
by Aardappeltaart
Sun Jun 30, 2019 10:32 am
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 3949

Re: Not all RPI 4's are equal?

Thx, but that contradicts Eben Upton words “some thermal optimizations that are not installed by default on early production units.” I can interpret "early production units" to encompass all RP4Bs produced before the optimisations are fully tested, deemed OK and used in production. If that point ha...
by Aardappeltaart
Sun Jun 30, 2019 9:25 am
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 3949

Re: Not all RPI 4's are equal?

Not sure what Eben was talking about specifically, but I know that the vli firmware has not been released. Reviewers have had devices for some time. In that time many things have changed, bootloader, kernel etc. But I don't think vli changes were sent out. It may be just this one guy was sent it. I...
by Aardappeltaart
Sun Jun 30, 2019 9:05 am
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 3949

Re: Not all RPI 4's are equal?

That article pretty much explains it. But note, the new USB device firmware has not been released yet, so at the moment all Pi4 are indeed the same. Thx, but that contradicts Eben Upton words “some thermal optimizations that are not installed by default on early production units.” And it doesn't ex...
by Aardappeltaart
Sun Jun 30, 2019 7:32 am
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 3949

Re: Not all RPI 4's are equal?

People are experiencing thermal issues The official case could be dubbed prefab sauna , raising the temperature to 70° idle. SPI Bootloader version (this is the current "production" version): rpi4:~ # vcgencmd bootloader_version May 10 2019 19:40:36 version d2402c53cdeb0f072ff05d52987b1b6b6d474691 (...
by Aardappeltaart
Sat Jun 29, 2019 10:08 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 532
Views: 135748

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

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