Go to advanced search

by flag26838
Thu Jul 19, 2018 12:52 pm
Forum: Troubleshooting
Topic: RaspberryPi 3 B +: random reboots caused by "beefy" power supply
Replies: 6
Views: 316

Re: RaspberryPi 3 B +: random reboots caused by "beefy" power supply

RaTTuS wrote:
Thu Jul 19, 2018 12:39 pm
is he micro usb lead made out of wet string?
???
I don't know what you mean here.
by flag26838
Thu Jul 19, 2018 12:09 pm
Forum: Troubleshooting
Topic: RaspberryPi 3 B +: random reboots caused by "beefy" power supply
Replies: 6
Views: 316

Re: RaspberryPi 3 B +: random reboots caused by "beefy" power supply

Any idea what could it be? From your description, one possible explanation is that your anonymous 2.1amp Power Supplies (and/or their associated cables) may in practice not be capable of delivering a stable voltage at times of peak current demand. 3 different power supplies? Anyhow, to remove this ...
by flag26838
Thu Jul 19, 2018 11:49 am
Forum: Troubleshooting
Topic: RaspberryPi 3 B +: random reboots caused by "beefy" power supply
Replies: 6
Views: 316

Re: RaspberryPi 3 B +: random reboots caused by "beefy" power supply

B.Goode wrote:
Thu Jul 19, 2018 10:48 am
Any idea what could it be?

From your description, one possible explanation is that your anonymous 2.1amp Power Supplies (and/or their associated cables) may in practice not be capable of delivering a stable voltage at times of peak current demand.
3 different power supplies?
by flag26838
Thu Jul 19, 2018 10:39 am
Forum: Troubleshooting
Topic: RaspberryPi 3 B +: random reboots caused by "beefy" power supply
Replies: 6
Views: 316

RaspberryPi 3 B +: random reboots caused by "beefy" power supply

What i'm about to report is completely counterintuive to me: i've always used several Raspberry board (2, 3, zero, etc) with one "weak" 5V 1A power supply, but since i switched to the latest Rpi 3 B Plus, i decided to deploy a move capable power supply, so i bought a 5V 2.1A one, and that's when i s...
by flag26838
Wed Jun 01, 2016 9:08 am
Forum: Bare metal, Assembly language
Topic: Entering aarch64 execution state
Replies: 171
Views: 76716

Re: Entering aarch64 execution state

CPU3: failed to come online Brought up 3 CPUs SMP: Total of 3 processors activated. That doesn't seem right. Are you using swarren's uboot with the stub prepended to it? Nice catch, i didn't notice that. No, i can't use latest swarren u-boot (or rather, u-boot master branch), or armstubs since my b...
by flag26838
Tue May 31, 2016 9:37 am
Forum: Bare metal, Assembly language
Topic: Entering aarch64 execution state
Replies: 171
Views: 76716

Re: Entering aarch64 execution state

Except that this branch hangs during boot, just before mounting rootfs: U-Boot 2016.03-00640-gc805f24 (May 30 2016 - 15:53:52 +0200) DRAM: 944 MiB RPI 3 Model B (0xa02082) boot regs: 0x00000000 0x00000000 0x00000000 0x00000000 MMC: bcm2835_sdhci: 0 reading uboot.env ** Unable to read "uboot.env" fro...
by flag26838
Fri May 27, 2016 3:07 pm
Forum: Bare metal, Assembly language
Topic: Entering aarch64 execution state
Replies: 171
Views: 76716

Re: Entering aarch64 execution state

Is there a repository containing all the kernel patches need to build an aarch64 kernel?
by flag26838
Mon May 23, 2016 12:06 pm
Forum: General discussion
Topic: FYI: ARM64 RaspberryPi3 kernel on Github
Replies: 4
Views: 1920

FYI: ARM64 RaspberryPi3 kernel on Github

I wonder if you were aware of this repository: https://github.com/Electron752/linux that seems to contain the necessary bits to build an arm64 rpi3 kernel - the guy put some code on top of an old (no tag unfortunately) rpi-4.5.y (~4.5-rc7) branch. I wonder where the guy took the code to enable the 6...
by flag26838
Wed May 11, 2016 7:49 am
Forum: HATs and other add-ons
Topic: rtl8192cu support: rtlwifi vs rtl8192cu/rtl8xxxu driver
Replies: 3
Views: 3481

Re: rtl8192cu support: rtlwifi vs rtl8192cu/rtl8xxxu driver

That thread is 4+ years old, and the rtlwifi/rtl8xxxu drivers received hundreds of commits in the meantime - have you evaluated again these drivers?

I'm asking because that driver breaks some aspects of openwrt, while the upstream one works like a charm.
by flag26838
Tue May 10, 2016 1:02 pm
Forum: HATs and other add-ons
Topic: rtl8192cu support: rtlwifi vs rtl8192cu/rtl8xxxu driver
Replies: 3
Views: 3481

rtl8192cu support: rtlwifi vs rtl8192cu/rtl8xxxu driver

I'm confused about support for the rtl819cu chipset in the official Raspberry kernel (https://github.com/raspberrypi/linux - rpi-4.4.y). In particular, i've noticed that you imported an out-of-tree driver and commented out the upstream one: commit 3064187eb81b206a92629b91afd52337a4a5e3ee Author: pop...
by flag26838
Thu Mar 03, 2016 10:21 am
Forum: Advanced users
Topic: Raspberry Pi 3 - Bluetooth PL011 UART (9bit on mini-UART)?
Replies: 22
Views: 15484

Re: Raspberry Pi 3 - Bluetooth PL011 UART (9bit on mini-UART

Ok guys, a couple of questions:

1) What's the mini-uart? And what's so different from a "normal" UART?
2) How do i get my serial console back in full work on my pi3?

This change should be mentioned in the RaspberryPI3 release notes or in a FAQ, IMHO, at first i thought i had a faulty hardware.
by flag26838
Wed Mar 02, 2016 12:19 pm
Forum: General discussion
Topic: The Raspberry Pi 3 Model B Q&A thread
Replies: 457
Views: 199303

Re: The Raspberry Pi 3 Model B Q&A thread

Am i the only one experiencing garbage on the serial port? (i mean the gpio rx/tx pins) - cable is good since it works fine on my raspi2. I am testing with the latest jessie image, and after logging via ssh the board seems fine. Another question: is there a way to disable _forever_ the wifi / blueto...

Go to advanced search