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by Ernst
Mon Sep 09, 2019 6:36 pm
Forum: Beginners
Topic: Error in make -j4
Replies: 2
Views: 267

Re: Error in make -j4

I am using the OS as raspbian buster and trying to configure opencv 3.1.0 and python 3. I am following the tutorial given in https://www.deciphertechnic.com/install-opencv-python-on-raspberry-pi/ The tutorial uses opencv 3.4.1, why are you using 3.1.0 ? I am getting errors when doing step 9, "make ...
by Ernst
Sun Sep 08, 2019 10:26 am
Forum: Beginners
Topic: Asus Monitor & Rpi Zero W
Replies: 3
Views: 136

Re: Asus Monitor & Rpi Zero W

It looks that DisplayLink can be used with Linux on ./arm* ./x86* and ./x64* by porting the Ubuntu driver. https://support.displaylink.com/knowledgebase/articles/679060-porting-the-displaylink-ubuntu-driver-to-other-lin I do not have any DisplayLink devices (anymore) so I can not test if the driver ...
by Ernst
Sat Sep 07, 2019 11:51 am
Forum: Advanced users
Topic: Raspberry Pi4 EEPROM update package - beta
Replies: 57
Views: 5093

Re: Raspberry Pi4 EEPROM update package - beta

The rpi-eeprom package has been moved from untested to stable so it can be installed with just apt update apt get rpi-eeprom Whilst the rescue image is still available for fixing corrupted EEPROMs the documentation (PR pending) will point users towards rpi-eeprom for feature upgrades / bug fixes. I...
by Ernst
Sat Sep 07, 2019 10:49 am
Forum: Troubleshooting
Topic: allow hot-plug wlan0
Replies: 10
Views: 375

Re: allow hot-plug wlan0

It just seems to defy belief that a working kernel has been updated (bad use of the word) to the point that a working dongle that DID work: now when used to make an access point and a device connects causes a kernel panic and the machine locks up. AND that a brand name wifi dongle also doesn't work...
by Ernst
Wed Sep 04, 2019 9:16 am
Forum: Beginners
Topic: Raspberry pi 4, VGA adaptor
Replies: 8
Views: 578

Re: Raspberry pi 4, VGA adaptor

Pi4B. No problems with the full size HDMI versions, the micro size HDMI adapter works for some time before the screen goes black, re-plugging brings back the picture, iow not recommended. I suffered the same problem when I added a mico HDMI adaptor to my HDMI-DVD-i cable , but I found that by enabl...
by Ernst
Tue Sep 03, 2019 8:22 pm
Forum: Beginners
Topic: Where could I get a case for an older Raspberry Pi please?
Replies: 18
Views: 378

Re: Where could I get a case for an older Raspberry Pi please?

It's not you, private messages have been disabled on this forum for security reasons. You'll have to share some contact details here, where anyone can see them, so make sure to use something non-personal. GDPR I was told :!: Maybe a temp google mail account? I use 33mail.com when I need a temporary...
by Ernst
Tue Sep 03, 2019 3:22 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 558
Views: 162621

Re: Raspberry Pi 4 temperature

ProDigit wrote:
Tue Sep 03, 2019 3:11 pm
Would be nice to see if you could use the stock thermal pads in combination with thermal paste, to see if that improves the heat transfer?
Do you understand the purpose of thermal paste ?
by Ernst
Tue Sep 03, 2019 3:19 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 209
Views: 336556

Re: Under-voltage warnings

Note that if the warning is being reported, you may be more susceptible to SD card corruption, random RAM corruption, USB communication failures etc. All of these may be happening right now but you may not be noticing them. Until one of them hits something critical. Then you will. Thanks, yes, I re...
by Ernst
Tue Sep 03, 2019 11:51 am
Forum: Beginners
Topic: Raspberry pi 4, VGA adaptor
Replies: 8
Views: 578

Re: Raspberry pi 4, VGA adaptor

If you want VGA then look at one of the specialist pi shops for an HDMI to VGA adapter, personally I would recommend you get a HDMI to DVI-I cable. Just for information: I have 4 cheap HDMI to VGA adapters in use, two with full size HDMI plug for Raspberry, one with full size HDMI plug for my PC, a...
by Ernst
Sat Aug 31, 2019 5:52 pm
Forum: General discussion
Topic: [solved] No DHCP adress in buster with network cable, only on dhcp
Replies: 7
Views: 283

Re: No DHCP adress in buster with network cable, only on dhcp

I suggest you remove power from your router to force a cold start.
This is not a buster problem, the problem is in your network.
by Ernst
Sat Aug 31, 2019 4:54 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 20715

Re: Why moving to 64bit?

How wide is the data bus between the processor and memory on the Pi 4B? Not wide enough to make a difference ;) At last someone answers this question from 2016. Yet, the answer is somewhat unsatisfying. Could the memory data bus use exactly 8 wires? If so, would that mean the Pi is morally equivale...
by Ernst
Sat Aug 31, 2019 8:43 am
Forum: Troubleshooting
Topic: Pi 3B+ core throttling at 2A?
Replies: 4
Views: 147

Re: Pi 3B+ core throttling at 2A?

I had set my arm_freq_min to 300Mhz, so it was running quite slow. It could have easily throttled down to 1,2Ghz instead. But yeah, I have a 3A charger , and don't experience the throttling on it. I just found it strange for the Pi to throttle down so low on a 2A charger , as there's not really a l...
by Ernst
Thu Aug 29, 2019 7:14 am
Forum: Beginners
Topic: I cannot SSH my pi anymore
Replies: 20
Views: 819

Re: I cannot SSH my pi anymore

As you can see root is 6 GB in size, not 29 GB or so. This means the install of Raspbian did not go through (or you modified something) Recommend you reinstall. 1+ And I recommend that on first boot to wait at least 10 minutes before removing power to give raspbian time to finish initialisation.
by Ernst
Wed Aug 28, 2019 9:02 am
Forum: Troubleshooting
Topic: upgrade of kernel and/or bootloader going wrong
Replies: 16
Views: 438

Re: upgrade of kernel and/or bootloader going wrong

epposan wrote:
Wed Aug 28, 2019 7:45 am
However one particular remote Pi2 has been giving kernel upgrade problems several times lately, and after each failing upgrade I try to come up with additional checks to hopefully find the real cause of the problem.
Have you changed the memory card ?
by Ernst
Thu Aug 22, 2019 2:22 pm
Forum: Raspbian
Topic: Client email to send emails from command line
Replies: 35
Views: 11823

Re: Client email to send emails from command line

Why what ? why does ssmpt use the wrong encryption under buster - I don't know why is ssmpt no longer maintained - I guess be cause the maintainer has given up on it. why use msmtp - because it does work when running on buster. You told me I have to change to msmtp, I told you ssmtp works with my I...
by Ernst
Thu Aug 22, 2019 2:07 pm
Forum: Raspbian
Topic: Client email to send emails from command line
Replies: 35
Views: 11823

Re: Client email to send emails from command line

I am using ssmtp for cron with buster to send emails to my ISP, but I have been unable to get it to work with gmail. if you look at the thread I linked , you will see the reason ssmtp does not work in buster is because under buster its trying to use the wrong encryption. you need to replace ssmtp w...
by Ernst
Thu Aug 22, 2019 1:35 pm
Forum: Raspbian
Topic: Client email to send emails from command line
Replies: 35
Views: 11823

Re: Client email to send emails from command line

I'm also having trouble sending mail from the command line, and would really appreciate any help. Running Pi4 with Raspbian Buster. Hi Not surprised it does not work ssmtp is no longer maintained and will does not work for gmail with buster You now need to switch to msmtp to send mail from buster, ...
by Ernst
Wed Aug 21, 2019 8:40 am
Forum: Troubleshooting
Topic: FFmpeg "Illegal instruction" Raspberry Pi Zero W
Replies: 19
Views: 662

Re: FFmpeg "Illegal instruction" Raspberry Pi Zero W

we got major progress! i installed 264 library git clone --depth 1 http://git.videolan.org/git/x264 cd x264 ./configure --host=arm-unknown-linux-gnueabi --enable-static --disable-opencl make sudo make install i then ran the following command (using the same input file) ffmpeg -i "/home/pi/Desktop/j...
by Ernst
Wed Aug 21, 2019 6:38 am
Forum: Troubleshooting
Topic: FFmpeg "Illegal instruction" Raspberry Pi Zero W
Replies: 19
Views: 662

Re: FFmpeg "Illegal instruction" Raspberry Pi Zero W

It is very possible that the codec is the performance bottleneck, even on a fast intel PC the performance is not very satisfying.
by Ernst
Wed Aug 21, 2019 6:02 am
Forum: Troubleshooting
Topic: FFmpeg "Illegal instruction" Raspberry Pi Zero W
Replies: 19
Views: 662

Re: FFmpeg "Illegal instruction" Raspberry Pi Zero W

Job completed in 258m22.403s (6Hrs 18min 22sec) frame= 1800 fps=0.1 q=31.0 size= 6739kB time=00:00:29.97 bitrate=1743.2kbits/s dup=1 drop=0 speed=0.00194x using Raspbian Buster with Desktop, started with console only on a Pi 0W, 16GB Samsung EVO SD Card, official 5.1V 2.5A power supply average CPU t...
by Ernst
Tue Aug 20, 2019 5:25 pm
Forum: Troubleshooting
Topic: FFmpeg "Illegal instruction" Raspberry Pi Zero W
Replies: 19
Views: 662

Re: FFmpeg "Illegal instruction" Raspberry Pi Zero W

Why do you use sudo ? when FFmpeg tries to re-write on the same output file it needs permission use -y instead ffmpeg -y -ss 00:00:10 -t 00:00:30 -i "/home/pi/Desktop/jpFiles/GOPR2546.MP4" "/home/pi/Desktop/jpFiles/JoyPro2.mp4" 1) Are you using a proper power supply or are you using a phone charger...

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