Linux News - Page 222 of 482 - CNX Software

August 12, 2019August 12, 2019 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Linaro Connect San Diego 2019 Schedule – IoT, AI, Optimizations, Compilers and More

Linaro has recently released the full schedule of Linaro Connect San Diego 2019 that will take place on September 23-27. Even if you can’t attend, it’s always interested to check out the schedule to find out what interesting work is done on Arm Linux, Zephyr OS, and so on. So I’ve created my own virtual schedule with some of the most relevant and interesting sessions of the five-day event. Monday, September 23 14:00 – 14:25 – SAN19-101 Thermal Governors: How to pick the right one by Keerthy Jagadeesh, Software Engineer, Texas Instruments With higher Gigahertz and multiple cores packed in a SoC the need for thermal management for Arm based SoCs gets more and more critical. Thermal governors that define the policy for thermal management play a pivotal role in ensuring thermal safety of the device. Choosing the right one ensures the device performs optimally with in the thermal budget. […]

August 9, 2019August 15, 2019 by Jean-Luc Aufranc (CNXSoft) - 56 Comments

How Do You Handle Backups in Linux? Hardware, Software, Configuration, etc…

Linux EXT-4 File System Corruption & Attempted Recovery There’s a file system corruption bug related to EXT-4 in Linux, and it happened to me a few times in Ubuntu 18.04. You are using your computer normally, then suddenly you can’t write anything to the drive, as the root partition has switched to read-only. Why? Here are some error messages:

[15882.773747] EXT4-fs (dm-4): re-mounted. Opts: (null)
[15898.557605] EXT4-fs error (device dm-4): ext4_iget:4831: inode #2113041: comm rm: bad extra_isize 20100 (inode size 256)
[15898.568305] EXT4-fs error (device dm-4): ext4_iget:4831: inode #2113042: comm rm: bad extra_isize 35148 (inode size 256)
[15898.569774] EXT4-fs error (device dm-4): ext4_lookup:1577: inode #2557277: comm rm: deleted inode referenced: 2113043

[15882.773747] EXT4-fs (dm-4): re-mounted. Opts: (null)

[15898.557605] EXT4-fs error (device dm-4): ext4_iget:4831: inode #2113041: comm rm: bad extra_isize 20100 (inode size 256)

[15898.568305] EXT4-fs error (device dm-4): ext4_iget:4831: inode #2113042: comm rm: bad extra_isize 35148 (inode size 256)

[15898.569774] EXT4-fs error (device dm-4): ext4_lookup:1577: inode #2557277: comm rm: deleted inode referenced: 2113043

What then happens is that you restart your PC, and get to the command where you are asked to run:

esfsck /dev/sda2

1	esfsck /dev/sda2

Change /dev/sda2 to whatever your drive is, and manually review errors. You can take note of the file modified, as you’ll likely have to fix your Ubuntu installation later on. Usually the fix consists of various package re-installations:

sudo apt install --resintall <package-name>

1	sudo apt install --resintall <package-name>

It happened to me two or three times in the past, and it’s a pain, but I eventually recovered. But this time, I was not so lucky. The system would […]

August 8, 2019August 8, 2019 by Jean-Luc Aufranc (CNXSoft) - 27 Comments

Rock Pi 4 SBC Runs GNOME & KDE Plasma using Panfrost Open Source GPU Driver & Wayland

One of the highlights of Linux 5.2 release was support for two new Arm Mali GPU open-source drivers, namely Lima for Mali-4xx GPU, and Panfrost for the Midgard Mali-T6xx/7xx/8xx series, and the more recent Bifrost Mali-Gxx GPUs. Collabora worked on the release and was donated a few Rock Pi 4 boards from Radxa directly to work on the project. For those who are not familiar, Rock Pi 4 board is powered by a Rockchip RK3399 processor with a Mali-T860MP4 GPU that is supported by Panfrost open source GPU driver. The company managed to have Debian 10 Buster running on Rock Pi 4 using 3D graphics acceleration thanks to Panfrost drivers on both GNOME and KDE Plasma desktop environment, as well as Weston Wayland compositer. The good news is that you can build Rock Pi 4 images by yourself using Debos with the following commands:

git clone https://gitlab.collabora.com/rockpi/rockpi4
cd rockpi4
docker run --rm --interactive --tty --device /dev/kvm --workdir /recipes --mount "type=bind,source=$(pwd),destination=/recipes" --security-opt label=disable godebos/debos --scratchsize=8G rockpi4.yml

git clone https://gitlab.collabora.com/rockpi/rockpi4

cd rockpi4

docker run --rm --interactive --tty --device /dev/kvm --workdir /recipes --mount "type=bind,source=$(pwd),destination=/recipes" --security-opt label=disable godebos/debos --scratchsize=8G rockpi4.yml

Alternatively, you could directly download […]

August 6, 2019 by Stephen Vicinanza - No Comments

Arm Releases Pelion Connectivity Management 2.0 Platform with Greater Automation

Arm has announced its latest version of Pelion IoT Platform, a no-upgrade needed platform Pelion Connectivity Management 2.0 a SaaS with an automation engine. Previously, we reported on the Sigma Delta Technologies modular devkit that was designed to work with the cloud-based Arm Pelion 1.0 device management service through the Mbed OS, focused on IoT development. The Pelion Connectivity Management 2.0 adds a level of automation that the Pelion 1.0 didn’t have, but that the company felt the customer base in the IoT industry wanted. The new features expand on the Pelion platform, through the Mbed OS, which helped the platform expand through cloud-based management services. The loudest voices in the ever-expanding and transforming IoT industry have said that automation is the key to removing barriers that allow IoT to scale. Pelion 1.0 already offered a single, cloud-based connectivity solution for managing IoT devices. Pelion 2.0 allows IoT devices to […]

August 5, 2019 by Stephen Vicinanza - No Comments

IBase IBR210 i.MX 8M SBC Targets Multi-Display Digital Signage

The latest release from IBase is a single board computer that seems to be designed for the mass business markets, especially in signage. The IBR210 is a 3.5-inch (147 x 102 mm) low-power multimedia SBC based on the NPX ARM Cortex-A53/Cortex-M4 i.MX 8M processor that comes in either a dual or quad-core running in the 1.3 GHz to 1.5 GHz frequency range. The unit was announced on August 1, 2019, but as of yet there is no pricing information. The GPU is a Vivante GC7000Lite/GC7000VLX, and an integrated Cortex-M4F real-time core, in the i.MX8M. Although for the i.MX8M Mini is a faster and newer SoC, the i.MX8M supports 4K video and HDR. The system runs Android 9 or Yocto v2.5 Linux, with up to 3GB soldered LPDDR4 and up to 64GB eMMC. The video output supports 4K via HDMI 2.0, while there are 2 USB 3.0 ports. The board supports […]

August 5, 2019August 5, 2019 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Pine64 SoEdge-RK1808 AI Module Delivers 3.0 TOPS via Rockchip RK1808 SoC

SOPINE Model A Baseboard + SoEdge-RK1808

A few weeks ago, Ameridroid reported Pine64 would soon launch SoRock and SoEdge systems-on-module, but at the time there was virtually no info except SoRock would be likely based on either RK3328 or RK3399 and work on the existing Clusterboard, while SoEdge would be an AI Neural module for Artificial Intelligence tasks, with up to 3 TeraFLOPS of performance. I did not write about it at the time, simply because there was so little information, but this morning I’ve just received some photos of SoEdge-RK1808 module fitted to a baseboard that looks to be SOPINE Model “A” carrier board. SoEdge-RK1808 SoM Let’s try to derive the specifications from the photos even though some components appear to be blurred out or just unclear: SoC – Rockchip RK1808 dual-core Cortex-A35 processor with 3.0 TOPS NPU (Neural Processing Unit) System Memory – 2GB RAM (2x 8GBit Micro DDR4-2400) but limited PC-2133 Storage – […]

July 31, 2019August 4, 2019 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

BeagleBone Green Gateway SBC Adds Octavo OSD3358 SiP, Ethernet, and a DC Jack

BeagleBone Green Wireless was launched in 2016 as an alternative to the official BeagleBone Green with WiFi & Bluetooth connectivity, and some extra USB ports meaning the Ethernet port had to go. The Linux SBC was based on Texas Instruments Sitara AM3358 processor and a 512 MB RAM chip. Seeed Studio has been working on an update of the board named BeagleBone Green Gateway that combines the processor, the RAM chip, and more components into one thanks to Octavo Systems OSD3358 SiP. The new board also adds Ethernet, a DC jack for power instead of just relying on micro USB, and an I2C RTC chip and battery. BeagleBone Green Gateway specifications with changes highlighted in bold: SiP – Octavo Systems OSD3358 with Texas Instruments AM3358 Arm Cortex-A8 processor @ 1.0 GHz, 2×32-bit 200-MHz programmable real-time units (PRUs), 3D graphics accelerator, 512MB DDR3 SDRAM, 4KB EEPROM, and integrated power management Storage […]

July 31, 2019 by Jean-Luc Aufranc (CNXSoft) - 24 Comments

Orange Pi Zero LTS SBC Launched for $8.49 and Up

Orange Pi Zero LTS is an update to Orange Pi Zero Allwinner H2+ board with the same specifications, but tweaks to the hardware that Shenzhen Xunlong Software claims lower power consumption and reduce heat. The SBC supports Armbian’s Debian and Ubuntu images, and best suited for headless applications that require network connectivity via Ethernet and/or WiFi such as smart speakers. The board also features one USB port, and two I/O headers for expansion. The good news is that you can now buy Orange Pi Zero LTS for the same price as the original model, namely $8.49 for the 256MB RAM version, and $10.49 for the 512MB model$10.49 for the 512MB model, excluding shipping costs ($4.73 to my location). Here’s a reminder of Orange Pi Zero LTS (v1.5) specifications: SoC – Allwinner H2+ quad-core Cortex A7 processor @ 1.2 GHz with Mali-400MP2 GPU @ 600 MHz System Memory – 256 to […]