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by incognitum
Mon Jul 15, 2019 9:35 am
Forum: Raspbian
Topic: raspbian buster freezes during network boot (ethernet issue?)
Replies: 6
Views: 239

Re: raspbian buster freezes during network boot (ethernet issue?)

Yes, noticed that too, and created an issue: https://github.com/raspberrypi/linux/issues/3067

If you don't care about a working camera, a workaround that works for me is adding "modprobe.blacklist=bcm2835_v4l2" to cmdline.txt (on same line as other options).
by incognitum
Sat Jul 13, 2019 10:45 am
Forum: General discussion
Topic: I didn't think the usb c power thing was a big deal...
Replies: 79
Views: 3275

Re: I didn't think the usb c power thing was a big deal...

If it's designed to charge a battery, it's a charger, and may get away with poor voltage regulation. Doesn't matter if it can also be used to power the device while charging (the battery is what powers the device, and also acts as a rudimentary UPS). Even if the Pi4 was compliant, we'd probably be ...
by incognitum
Fri Jul 12, 2019 8:07 pm
Forum: Advanced users
Topic: Pi as PiServer Host
Replies: 2
Views: 160

Re: Pi as PiServer Host

Probably needs libatomic (due to Pi not supporting atomic operations on 64-bit numbers natively. at least not in 32-bit ARMv6 mode)
Added a fix.
Can you download latest version ("git pull") and see if the debuild works better now?
by incognitum
Thu Jul 11, 2019 11:17 am
Forum: General discussion
Topic: RPi 4 OpenVG Support?
Replies: 8
Views: 325

Re: RPi 4 OpenVG Support?

I found this: https://www.amanithvg.com/ but it's not open source and may require licensing (depending on usage). LGPL licensed on top of standard OpenGL: https://github.com/ileben/ShivaVG BSD licensed on top of OpenGL ES: https://github.com/micahpearlman/MonkVG Neither are full implementations, bu...
by incognitum
Thu Jul 11, 2019 10:58 am
Forum: General discussion
Topic: RPi 4 OpenVG Support?
Replies: 8
Views: 325

Re: RPi 4 OpenVG Support?

g8gkq wrote:
Thu Jul 11, 2019 9:33 am
If not, is there any alternative way
Recall there are some semi-accelerated software OpenVG implementations, that call OpenGL to do the actual work.
Tried if your software works with any of those?
by incognitum
Wed Jul 10, 2019 12:50 pm
Forum: Beginners
Topic: Scanning with SANE through LAN/Network
Replies: 8
Views: 277

Re: Scanning with SANE through LAN/Network

I also believe I have already seen a way (can't remember) to change permissions using only udev rules syntax, without resorting to external functionality like setfacl . If you only have single-function scanners you can probably also do GROUP="scanner" instead ACLs mainly come into play if more than...
by incognitum
Wed Jul 10, 2019 8:33 am
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 107
Views: 9960

Re: Raspberry Pi 4 usb boot?

Sure, for customer provisionable things. Would it be naive on my part to hope that a few bytes of actual OTP be reserved for end-user use? https://www.raspberrypi.org/documentation/hardware/industrial/README.md Would rather have a bigger part of EEPROM space reserved instead though. (For things lik...
by incognitum
Tue Jul 09, 2019 4:54 pm
Forum: Beginners
Topic: Scanning with SANE through LAN/Network
Replies: 8
Views: 277

Re: Scanning with SANE through LAN/Network

I do not have much knowledge about udev rules, and I don't understand why remote scan with SANE work after an obvious error. Think your udev rule is too wide and matches multiple times. Both on the single occasion you want it to, and others which result in the error. Try if the error no longer occu...
by incognitum
Tue Jul 09, 2019 12:13 am
Forum: Beginners
Topic: Scanning with SANE through LAN/Network
Replies: 8
Views: 277

Re: Scanning with SANE through LAN/Network

The solution provided involves adding udev rules that in turn causes the command, sudo systemctl status systemd-udevd to issue failures with error exit code 2. While it appears to solve the problem, IT IS NOT an acceptable solution, so please don't point me to there. May want to mention which udev ...
by incognitum
Mon Jul 08, 2019 7:16 am
Forum: Advanced users
Topic: Piserver PXE image troubleshooting
Replies: 1
Views: 112

Re: Piserver PXE image troubleshooting

After time synchronization it says I am in emergency mode. It says mounting /var/lib/dhcp fails Which is normally a tmpfs file system when running piserver ( https://github.com/raspberrypi/piserver/blob/master/scripts/convert_chrooted_cmds#L18 ) Double check the folder (mount point) /var/lib/dhcp e...
by incognitum
Sun Jul 07, 2019 9:12 am
Forum: Advanced users
Topic: Is been iptables substituted by nftables in Rasbpian Buster?
Replies: 8
Views: 535

Re: Is been iptables substituted by nftables in Rasbpian Buster?

iptables and ip6tables are still there They are now a frontend to nft though. So better use nft directly. but during some tests I noted all rules I write in /etc/iptables.firewall.rules are ignored. If you want any iptables/nft rules loaded on startup you need to write your own startup script for t...
by incognitum
Fri Jul 05, 2019 10:11 am
Forum: General discussion
Topic: Multi-Seat use of RPi 4
Replies: 27
Views: 1477

Re: Multi-Seat use of RPi 4

Gavinmc42 wrote:
Fri Jul 05, 2019 10:08 am
Hardware or software limitation?
No idea.
Audio is currently handled by the firmware, closed source and such. So as outsider I do not know.

Perhaps things will be better when the switch to normal full kms is made, instead of firmware kms.
by incognitum
Fri Jul 05, 2019 8:50 am
Forum: General discussion
Topic: Multi-Seat use of RPi 4
Replies: 27
Views: 1477

Re: Multi-Seat use of RPi 4

Gavinmc42 wrote:
Fri Jul 05, 2019 8:18 am
Hey is the audio on both HDMI channels?
Currently only on one at a time.
by incognitum
Thu Jul 04, 2019 7:17 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Hardware Recommendation PiServer
Replies: 1
Views: 87

Re: Hardware Recommendation PiServer

Buzz2912 wrote:
Thu Jul 04, 2019 6:14 pm
All they have to do is boot and execute rdesktop.
Anything with a network port will be able to act as server for that.
Even another Pi...
by incognitum
Thu Jul 04, 2019 2:41 pm
Forum: Off topic discussion
Topic: RIP 32 BIT
Replies: 223
Views: 6041

Re: RIP 32 BIT

If I ever need to have more than 3.8GB Mapped in to a single applications work space at one time then something is wrong. Do note that user-space gets 3 GB of address space, and the kernel 1 GB. The kernel does like to have access to a lot more memory than 1 GB though (e.g. likes to use any spare m...
by incognitum
Wed Jul 03, 2019 10:26 pm
Forum: General discussion
Topic: Why doesn't the next Pi add...? Why doesn't the Pi 4 have...? The definitive debunking!
Replies: 68
Views: 2765

Re: Why doesn't the next Pi add...? Why doesn't the Pi 4 have...? The definitive debunking!

trejan wrote:
Wed Jul 03, 2019 10:21 pm
Huh? One of the new features of the RPi 4 SoC is that it now has 6 UARTs.
Noticed that too.
Wonder why one of those isn't tied to the standard RX/TX pins by default though?!
Especially now the miniuart no longer functions properly (tied to GPU clock that is now dynamic).
by incognitum
Tue Jul 02, 2019 7:32 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: PiServer - copy OS - restart
Replies: 11
Views: 1506

Re: PiServer - copy OS - restart

bsdtar is not installed out of the box. After installing it via apt it works. It does install it on new installations now (during Piserver's first use), but should indeed be changed to also do so for updates of existing installations. === I tried to create a tar archive in Terminal. After reimporti...
by incognitum
Tue Jul 02, 2019 4:59 pm
Forum: Media centres
Topic: Pinet hosted media center on RPI 4?
Replies: 8
Views: 546

Re: Pinet hosted media center on RPI 4?

fruitoftheloom wrote:
Tue Jul 02, 2019 1:40 pm
PiServer may be an alternative ??
Pi 4 does not support booting from network yet...
So that would not work without messing with SD cards.
by incognitum
Mon Jul 01, 2019 11:52 pm
Forum: Networking and servers
Topic: PiServer - is it appropriate for my use-case?
Replies: 1
Views: 186

Re: PiServer - is it appropriate for my use-case?

Use and old laptop as the server box, with my various OS installs (Raspbian, OSMC, Ubuntu core, windows IoT, Kali etc) Piserver is more aimed at classroom setups where a single read-only (Raspbian) OS image is shared with multiple Pi. Users need to login with their username and password to gain acc...
by incognitum
Mon Jul 01, 2019 2:08 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 24
Views: 3263

Re: PI 4 Compute module with pci-e?

Been looking in the bcm2711-rpi-4-b.dts bcm2711-rpi-4-b.dts nothing there on pci-e or usb. Don't think pci-e devices like the USB3 card need to be specified in device-tree, given that pci(-e) already has its own mechanism to detect cards... So if you see a reference to usb it's more likely to be th...
by incognitum
Mon Jul 01, 2019 1:54 am
Forum: General discussion
Topic: New Pi 4 Firmware Coming Soon - Lowers Temps by 3-5C
Replies: 4
Views: 457

Re: New Pi 4 Firmware Coming Soon - Lowers Temps by 3-5C

hippy wrote:
Mon Jul 01, 2019 1:07 am
That "I work in a office where the air conditioner is set to 28°C" is what most surprised me.
The blogger lives in Thailand.
by incognitum
Sun Jun 30, 2019 1:48 am
Forum: General discussion
Topic: Multi-Seat use of RPi 4
Replies: 27
Views: 1477

Re: Multi-Seat use of RPi 4

Very nice! Perhaps you could make a turn key script for everyone or do a nice write up as it relates to the RPi 4? :) If you don't need 3D acceleration (which is currently a bit problematic as the fkms driver only exposes one dri device), the following is easiest: - start a terminal sudo leafpad /b...
by incognitum
Sun Jun 30, 2019 1:37 am
Forum: General discussion
Topic: Multi-Seat use of RPi 4
Replies: 27
Views: 1477

Re: Multi-Seat use of RPi 4

As far as classroom use goes, I somehow thought that a normal desktop monitor would be at least 2x or 3x as expensive as a Pi, meaning for a new install you don't achieve anything like 2 seats for the price of 1 simply by reducing the number of Pi boards needed. But maybe you do if you already have...
by incognitum
Sat Jun 29, 2019 11:28 pm
Forum: General discussion
Topic: Multi-Seat use of RPi 4
Replies: 27
Views: 1477

Re: Multi-Seat use of RPi 4

The hardware limitations would still be an issue for some, 3D acceleration, sound, # of USB ports etc. Haven't tested any demanding 3D accelerated stuff like games, but graphics wise it is good enough for normal desktop use. Playing video simultaneously on both seats using normal desktop applicatio...
by incognitum
Sat Jun 29, 2019 7:22 pm
Forum: Troubleshooting
Topic: Pi4 Network issues
Replies: 27
Views: 728

Re: Pi4 Network issues

Still took 9 seconds (better than last time) Carrier detection/link negotiation took 4 seconds this time (19:55:43-19:55:47) which is normal. The other time spent is testing if the IP address you specified is not already in use by someone else in the network, as safety check. (You can skip that by ...

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