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by ejolson
Thu Sep 05, 2019 5:31 am
Forum: General discussion
Topic: Network Interfaces (worm-shaped appendix)
Replies: 18
Views: 232

Re: Network Interfaces

Is there a better way for applications to be notified of WiFi devices being plugged and unplugged, of access points becoming available and disappearing again, etc ? As is required for those little widgets in the corner of our screens that we use to connect to WiFi. Other than taking up space in the...
by ejolson
Wed Sep 04, 2019 5:36 pm
Forum: General discussion
Topic: Backing up raspberry Pi4
Replies: 9
Views: 550

Re: Backing up raspberry Pi4

An intelligent backup only needs to copy used sectors. It see Macrium can perform a block-by-block comparison of the raw disk to a backup image and then incrementally store only the changed blocks. This idea could be adapted to backing up Raspberry Pi computers without much difficulty; however, Mac...
by ejolson
Wed Sep 04, 2019 4:02 pm
Forum: General discussion
Topic: Network Interfaces (worm-shaped appendix)
Replies: 18
Views: 232

Re: Network Interfaces

ShiftPlusOne wrote:
Wed Sep 04, 2019 3:47 pm
https://lwn.net/Articles/770991/
Thanks. I find it interesting that, in the name of making things simpler, iwd requires dbus.
by ejolson
Wed Sep 04, 2019 3:44 pm
Forum: General discussion
Topic: Network Interfaces (worm-shaped appendix)
Replies: 18
Views: 232

Re: Network Interfaces

Never mind. wpa_supplicant is old hat today. Soon to be replaced with iwd. I did a web search on iwd, but only found https://www.internationalwomensday.com/ Is wpa_supplicant really going to be replaced? Rather than creating new tools like ip to replace ifconfig, wouldn't it be better if the new fu...
by ejolson
Wed Sep 04, 2019 3:02 pm
Forum: General discussion
Topic: Backing up raspberry Pi4
Replies: 9
Views: 550

Re: Backing up raspberry Pi4

One of my long term beefs with Linux is that it doesn't seem to have any decent bare metal disk imaging software. Sure there's Clonezilla, but it's its not very friendly, thus error prone. One click, used sector only backup, with compression would be great. Have you tried piping dd through gzip? If...
by ejolson
Wed Sep 04, 2019 3:35 am
Forum: Beginners
Topic: Raspberry Pi ** Sold over 25million units **
Replies: 19
Views: 713

Re: Raspberry Pi ** Sold over 25million units **

Maximum C64 sales are 17M although that's debatable, could be as low as 11. We may actually have sold more Pi3 than even the high number. That's great news! Sadly, these facts won't help my Commodore-partisan friends. "It's not a home computer because it's not" seems to be the best argument. It's u...
by ejolson
Tue Sep 03, 2019 9:02 pm
Forum: Advanced users
Topic: Raspberry Pi4 EEPROM update package - beta
Replies: 55
Views: 3325

Re: Raspberry Pi4 EEPROM update package - beta

You can only do a manual update if you have root privileges when using the rpi-eeprom-update tool or are in the gpio group to do it directly using flashrom. https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md mentions a way of write protecting the EEPROM in hardware but the...
by ejolson
Tue Sep 03, 2019 2:22 pm
Forum: General discussion
Topic: Pi4 for retropi
Replies: 6
Views: 350

Re: Pi4 for retropi

Hey, My daughter (12) and I wanted a project that we could work on together. She likes programming "coding" as she calls it and I wanted to encourage that. So I purchased a Pi4 along with the needed accessories in order to get us started. However I am diving a little deeper into the "how to" and am...
by ejolson
Mon Sep 02, 2019 6:45 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 218
Views: 26457

Re: Buster bug report thread

This seems to be the thread I'm looking for: Mouse copy/paste on Buster not working. From any other Linux box I can ssh to any of my other RasPi boards, VI a file and, using my mouse, copy and paste from anywhere to the edit file or from file to cmd line. Not on Buster. I have no problem C&P in Bus...
by ejolson
Mon Sep 02, 2019 4:36 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 303
Views: 50211

Re: Raspberry Pi 4 usb boot?

If the EEPROM is writable and accessible it is hackable. To make use of "hackable" EEPROM on the pi4 one would need to: 1a) hack the os remotely and gain root access. or 1b) have local physical access 2) Have deep knowledge of VC4/6 hardware and software architecture and have knowledge of and acces...
by ejolson
Sun Sep 01, 2019 5:11 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 303
Views: 50211

Re: Raspberry Pi 4 usb boot?

If the EEPROM is writable and accessible it is hackable. To make use of "hackable" EEPROM on the pi4 one would need to: 1a) hack the os remotely and gain root access. or 1b) have local physical access 2) Have deep knowledge of VC4/6 hardware and software architecture and have knowledge of and acces...
by ejolson
Sun Sep 01, 2019 3:45 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

Re: Why moving to 64bit?

Is the Python comparison even a fair one? The difference seems too high to be true. Any AArch32/64 specific code in the interpreter? Hand optimized assembly? The comparison is not fair: As mentioned above, the 32-bit Python on Raspbian is compiled to be reverse compatible with the ARMv6 architectur...
by ejolson
Sun Sep 01, 2019 2:47 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

Re: Why moving to 64bit?

Ok let's see. How likely is it to have a micro HDMI --> HDMI adapter or cable? Very unlikely because rare/obscure connector. That's not the issue. The issue is whether the monitor supports DisplayPort. Micro-HDMI to HDMI is a much simpler conversion than mini-DisplayPort to HDMI. You also need a GP...
by ejolson
Sun Sep 01, 2019 2:03 am
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 303
Views: 50211

Re: Raspberry Pi 4 usb boot?

Raspberry Pi have specifically stated that they are not committed to keep using the same size of EEPROM, so it could change in the future. Yep prices will fall and they stick a bigger one in. One a complete OS can fit inside :lol: Just wish listing ;) Maybe Minux will fit. Could a big EEPROM contai...
by ejolson
Sat Aug 31, 2019 7:19 pm
Forum: General programming discussion
Topic: Is there an open source firmware for the Raspberry Pi computers?
Replies: 16
Views: 710

Re: Is there an open source firmware for the Raspberry Pi computers?

Another way to learn what computers are doing at the chip level without having to deal with many layers of abstraction is to play with much simpler 8-bit machines such as: https://www.raspberrypi.org/forums/viewtopic.php?f=62&t=77429 https://www.raspberrypi.org/forums/viewtopic.php?f=62&t=226889 ht...
by ejolson
Sat Aug 31, 2019 6:55 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

Re: Why moving to 64bit?

That's disappointing but expected. The Pi 4 looks good at first but if you dig deeper you find more and more compromises. Having a 64 bits bus would have been way better since it already has just 1 RAM chip unlike the competition. In my opinion a 32-bit data-bus for memory is good engineering. Usin...
by ejolson
Sat Aug 31, 2019 6:16 pm
Forum: General programming discussion
Topic: Liberation through Computer Literacy
Replies: 1125
Views: 49866

Re: Liberation through Computer Literacy

[1] Oops, just noticed this is reversed to the "divide by 64-bit runtime" metric used in the chart. Apologies for any confusion! [2] I guess taking logs might have been an idea first >< ... but don't think this will affect things too much. Thanks for the comprehensive tests. I'll rerun the Python a...
by ejolson
Sat Aug 31, 2019 5:12 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

Re: Why moving to 64bit?

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 equivalent to an 8-bit computer? With a little bit of searching I found that the...
by ejolson
Sat Aug 31, 2019 4:26 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

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 ejolson
Sat Aug 31, 2019 5:23 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 Ethernet Port Issue
Replies: 7
Views: 464

Re: Raspberry Pi 4 Ethernet Port Issue

I really wonder how many switches don't work with the rpi4b. Really sucks when "standard" interfaces have issues. I can confirm that these 3 switches all work with the the Pi4: GS105EV2, GS108Ev3, GS608. There is another thread here which mentions a number of gigabit switches that work with the Ras...
by ejolson
Fri Aug 30, 2019 11:49 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 259
Views: 18126

Re: Why moving to 64bit?

jamesh wrote:
Fri Aug 30, 2019 8:55 am
Pi4 can technically address 16GB, and I would think a decent 64bit Raspbian will eventually become available for it. No need to wait for the Pi5.
How wide is the data bus between the processor and memory on the Pi 4B?
by ejolson
Fri Aug 30, 2019 11:42 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 303
Views: 50211

Re: Raspberry Pi 4 usb boot?

since the work in progress, may we ask for ipv6+dhcpv6 support? I have succeeded with NFSv4 rootfs mount, dhcpv6 boot would let me finally get rid of ipv4 in the network. As long as we're dreaming about things other people will do, it would also be nice to have something like iPXE available, even i...
by ejolson
Fri Aug 30, 2019 8:12 pm
Forum: General discussion
Topic: Which SSD to buy for raspberry pi?
Replies: 56
Views: 3511

Re: Which SSD to buy for raspberry pi?

jcyr wrote:
Fri Aug 30, 2019 8:05 pm
Running the benchmark on the Pi4 is extremely easy. Run the following command on your Pi:

Code: Select all

curl https://raw.githubusercontent.com/TheRemote/PiBenchmarks/master/Storage.sh | sudo bash
It might be a better idea to down the file first and check that it won't do any harm before running it.
by ejolson
Fri Aug 30, 2019 8:01 pm
Forum: Raspbian
Topic: btrfs-progs in Buster busted for multi-drive disk pools.
Replies: 11
Views: 580

Re: btrfs-progs not working in Buster. Help requested.

Where is the Nancy Drew who can solve this mystery? The plot thickens. I just mounted a single BTRFS disk on the Pi 4B and obtained # /bin/btrfs --version btrfs-progs v4.20.1 # /bin/btrfs sub snap -r blua blua-old Create a readonly snapshot of 'blua' in './blua-old' # /bin/btrfs sub del blua-old De...
by ejolson
Fri Aug 30, 2019 5:53 pm
Forum: Advanced users
Topic: Raspberry Pi4 EEPROM update package - beta
Replies: 55
Views: 3325

Re: Raspberry Pi4 EEPROM update package - beta

timg236 wrote:
Fri Aug 30, 2019 5:47 pm
We have just released BETA of the new Debian package for updating the Raspberry Pi 4 bootloader EEPROM.
Looks convenient. Is there a historical list of EEPROM image versions and what errata are fixed and features added in each?

Specifically is there anything related to gigabit networking?

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