Go to advanced search

by ejolson
Fri May 29, 2020 5:56 pm
Forum: General discussion
Topic: Why release an 8gb model without upgrading the processor?
Replies: 35
Views: 1900

Re: Why release an 8gb model without upgrading the processor?

Someone who has only posted 4 times does not have enough knowledge. Certainly not long enough not to argue with James :-) PeterO It may be a mistake to think posting to this forum increases knowledge. Then again some of the answers here do contain information and are not chippy. I don't think anyon...
by ejolson
Fri May 29, 2020 4:02 am
Forum: Advanced users
Topic: vim is weird on RPi
Replies: 26
Views: 1478

Re: vim is weird on RPi

In general though it drives me nuts that simple things like cut and paste work differently on every damn machine. Do you need Control-V or Shift-Control-V, or a right mouse click, or a middle button click or in the case of my Vim in LSW on Win 10 open a menu select "edit" then select "paste" or... ...
by ejolson
Fri May 29, 2020 1:18 am
Forum: General discussion
Topic: Why release an 8gb model without upgrading the processor?
Replies: 35
Views: 1900

Re: Why release an 8gb model without upgrading the processor?

Those tests miss the point about what it is that having more RAM might speed up. Integer and float performance is not one of them. Unless you are dealing with data sets that won't fit in 4GB. I think those are copy operations using either an integer or floating point data type. Before the epidemic,...
by ejolson
Fri May 29, 2020 12:53 am
Forum: General discussion
Topic: Why release an 8gb model without upgrading the processor?
Replies: 35
Views: 1900

Re: Why release an 8gb model without upgrading the processor?

Does anybody know whether the speed of the RAM is higher compared to the 2/4 GB models? The specifications page on raspberrypi.org still says LPDDR4-3200 so it is likely to be the same as before. The new 8GB part is rated for a higher clock but the 1/2/4GB Pi 4 boards never ran the RAM at the maxim...
by ejolson
Thu May 28, 2020 10:35 pm
Forum: General discussion
Topic: Why release an 8gb model without upgrading the processor?
Replies: 35
Views: 1900

Re: Why release an 8gb model without upgrading the processor?

Does anybody know whether the speed of the RAM is higher compared to the 2/4 GB models? The specifications page on raspberrypi.org still says LPDDR4-3200 so it is likely to be the same as before. The new 8GB part is rated for a higher clock but the 1/2/4GB Pi 4 boards never ran the RAM at the maxim...
by ejolson
Thu May 28, 2020 9:29 pm
Forum: Advanced users
Topic: vim is weird on RPi
Replies: 26
Views: 1478

Re: vim is weird on RPi

/usr/share/vim/vim81/defaults.vim contains this block: " In many terminal emulators the mouse works just fine. By enabling it you " can position the cursor, Visually select and scroll with the mouse. if has('mouse') set mouse=a endif There's another puzzle, then, why local preferences don't take pr...
by ejolson
Thu May 28, 2020 8:33 pm
Forum: C/C++
Topic: New major release of GCC
Replies: 75
Views: 3125

Re: New major release of GCC

swampdog wrote:
Thu May 28, 2020 7:56 pm
How times have changed. My first PC was one of those "sticklebrick" air cooled pentium pro dual core cpu's with a huge 256Mb of ram.
Do you still have the Pentium Pro?
by ejolson
Thu May 28, 2020 8:02 pm
Forum: General discussion
Topic: A Pi Pie Chart
Replies: 122
Views: 17528

Re: A Pi Pie Chart

This year the pea plants in the back yard have already grown taller than anytime last summer. The Earth is healing. While relating this promising fact to the canine coder, there was an interruption. At first it sounded like barking but eventually I understood that since energy efficiency is part of ...
by ejolson
Thu May 28, 2020 5:13 pm
Forum: Advanced users
Topic: vim is weird on RPi
Replies: 26
Views: 1478

Re: vim is weird on RPi

But having a totally empty ~/.vimrc file does the job nicely. Cursor does not follow mouse and right click pastes text without having to jump through menu hoops. That's called a "bug that's become a feature" or "broken as coded". I think it was an intentional but bad design decision made by the dev...
by ejolson
Thu May 28, 2020 5:11 pm
Forum: General discussion
Topic: Get your Pi to fight COVID-19
Replies: 179
Views: 7094

Re: Get your Pi to fight COVID-19

Did you install packages and update the system using apt or apt-get? On the Jetson I up dated, upgraded and installed everything from packages, except for building boinc from source. As per the instructions I posted. All was well for 24 hours, today the Jetson cannot complete a task without "Error ...
by ejolson
Thu May 28, 2020 4:33 pm
Forum: General discussion
Topic: Why release an 8gb model without upgrading the processor?
Replies: 35
Views: 1900

Re: Why release an 8gb model without upgrading the processor?

No one is forcing you to buy one. Maybe another brand would meet your requirements better. PeterO I love the Pi. I am a huge fan and use them daily. The Pi4 4gb model and processor and form factor is hugely impressive. I’m adding that caveat because I feel one can criticize something that raspberry...
by ejolson
Thu May 28, 2020 2:37 pm
Forum: General discussion
Topic: Get your Pi to fight COVID-19
Replies: 179
Views: 7094

Re: Get your Pi to fight COVID-19

The bad news is that this morning I deleted the rosetta project on the Jetson and replaced it with the correct "https" URL. After that the Jetson locked up and rebooted. After a few cycles of doing that it seems to have stabilized again. At least long enought to fire up Chrome to type this message ...
by ejolson
Thu May 28, 2020 7:55 am
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 273
Views: 33448

Re: Why moving to 64bit?

What 8GB Pi4? There isn't one. I thought at least one was made in order to pass the compliance testing, which lists 8GB as being certified. Are you sure there isn't an 8GB model sitting on your desk? No 8GB Pi4 on my desk. Never seen one. Sorry for resurrecting this thread, but do you have an 8GB P...
by ejolson
Wed May 27, 2020 11:54 pm
Forum: General discussion
Topic: A Pi Pie Chart
Replies: 122
Views: 17528

Re: A Pi Pie Chart

One of those toy power meters that plug into the wall arrived in the mail. https://www.amazon.com/Poniie-PN1500-Electricity-Electrical-Consumption/dp/B07VPTN8FZ/ Since the pie chart program hasn't been experiencing feature creep and code bloat for a while, I added a new option that allows one to per...
by ejolson
Wed May 27, 2020 5:40 pm
Forum: General discussion
Topic: Oh, that's the case I want...
Replies: 25
Views: 782

Re: Oh, that's the case I want...

To avoid cracking and breakouts when drilling acrylic, buy plastic cutting drill bits. Regular metal and wood bits have a point angle that causes the chipping, grabbing and cracking when drilling acrylic. I finally bought some a couple years ago and am still kicking myself for not buying some many ...
by ejolson
Wed May 27, 2020 5:31 pm
Forum: C/C++
Topic: New major release of GCC
Replies: 75
Views: 3125

Re: New major release of GCC

I received my aluminium case with cooling fans and decided to give GCC 10 a retry on my Pi 4B-4GB. Somehow I destroyed the SD card cover, so that Pi is bricked. A retry with a new Pi 4B-2GB resulted in these error messages after almost 23 minutes: /usr/bin/ld: failed to set dynamic section sizes: m...
by ejolson
Wed May 27, 2020 4:07 pm
Forum: Advanced users
Topic: 160 Watt 4 ohm speaker with pi zero
Replies: 20
Views: 658

Re: 160 Watt 4 ohm speaker with pi zero

I generally use a 12V supply and reduce it to 5V for the Pi via a 7805 or V7805 regulator which I apply to a GPIO line. I hope you don't apply 5V to a GPIO line. That would fry your Pi. You can, however, connect a 5V supply to the correct pins of the GPIO header instead of the USB power connector, ...
by ejolson
Wed May 27, 2020 6:58 am
Forum: General discussion
Topic: A Pi Pie Chart
Replies: 122
Views: 17528

Re: A Pi Pie Chart

The Graviton2 processors reviewed at https://www.anandtech.com/show/15578/cloud-clash-amazon-graviton2-arm-against-intel-and-amd are now widely available on the EC2 cloud. I decided to make some Pi pie charts for the 4 processor instance which costs US$ 0.154 per hour. I used Ubuntu 20.04LTS with th...
by ejolson
Wed May 27, 2020 4:23 am
Forum: Networking and servers
Topic: iSCSI Root Like a Data Center
Replies: 26
Views: 1482

Re: iSCSI Root Like a Data Center

I was dreaming about how perfect the iSCSI root was working when I suddenly realized the Pi was still using a 100 MB swap file very unlike a data center. Clearly the system needed a swap partition. The usual way to create a swap partition on Raspbian is to make it before the root image on the SD car...
by ejolson
Wed May 27, 2020 1:33 am
Forum: General discussion
Topic: Does dust kill the Rasberry Pi 4?
Replies: 11
Views: 468

Re: Does dust kill the Rasberry Pi 4?

(saw) Dust has failed to kill the computer that is essentially buried in it at my place of work. That's not an exaggeration by the way, seven years of neglect has left it a few inches deep in dust and its used 12 hours a day, every day. The dust ranges from rough particulate to fine powder. The Pi ...
by ejolson
Tue May 26, 2020 11:44 pm
Forum: General discussion
Topic: Oh, that's the case I want...
Replies: 25
Views: 782

Re: Oh, that's the case I want...

Thanks for insights all - I only have access to hand-tools, and looking to limit my work to drilling through-holes, so the cheap pre-cut rectangles from cutmyplastic.co.uk look helpful. If you want cheap with hand tools, I mounted mine vertically on a block of wood using two bent pieces of coat han...
by ejolson
Tue May 26, 2020 7:15 pm
Forum: Advanced users
Topic: Incron Bug: Generating Zombie Processes
Replies: 10
Views: 244

Re: Incron Bug: Generating Zombie Processes

Why not just use a different cron? That was discussed in the first post. 4. Any other hint (avoiding incron is not a real option ....)? Did you try putting something like ( while sleep 43200 do service incron restart done ) & in /etc/rc.local or similar? Okay- : :idea: got you ! I will give it a tr...
by ejolson
Tue May 26, 2020 6:56 pm
Forum: General discussion
Topic: Oh, that's the case I want...
Replies: 25
Views: 782

Re: Oh, that's the case I want...

It should be pointed out that placing a USB3 HD on top (or even under) the Pi may lead to electrical interference that prevents WiFi from functioning. This is not likely a problem for a NAS because they are connected by wired Ethernet, but it is something to keep in mind. https://www.raspberrypi.or...
by ejolson
Tue May 26, 2020 6:48 pm
Forum: Advanced users
Topic: Incron Bug: Generating Zombie Processes
Replies: 10
Views: 244

Re: Incron Bug: Generating Zombie Processes

dickon wrote:
Tue May 26, 2020 5:29 pm
Why not just use a different cron?
That was discussed in the first post.
WiFi wrote:
Mon May 25, 2020 4:37 am
4. Any other hint (avoiding incron is not a real option ....)?
Did you try putting something like

Code: Select all

(
    while sleep 43200
    do
        service incron restart
    done
) &
in /etc/rc.local or similar?
by ejolson
Tue May 26, 2020 6:42 pm
Forum: Advanced users
Topic: 160 Watt 4 ohm speaker with pi zero
Replies: 20
Views: 658

Re: 160 Watt 4 ohm speaker with pi zero

Hi! So the pHAT would work with such a big speaker? I have seen some videos of it with just small speakers and I am worried about killing my pi or something. the pHAT DAC can't drive speakers directly. you still need to connect it to an audio amplifier unit which will then drive your speakers. how ...

Go to advanced search