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Hello.
\nIt has been about half a year since my last update.
I bought this Raspberry Pi 4 during Amazon’s Cyber Monday sale last week.
\nAmazon.co.jp: LABISTS Raspberry Pi 4 4GB Kit (with technical conformity mark)
\nThis Raspberry Pi 4 has 4GB of RAM and can connect to Wi-Fi and even run Ubuntu Desktop, so I was excitedly setting it up when I ran into a problem where netplan apply failed.
\nAs it turned out, the cause was a bug in netplan.io included in the Ubuntu Server 20.04.1 ISO downloaded from the official site, and the problem was resolved by connecting with wired networking once and performing an update.
In this article, I will summarize the steps to install Ubuntu Server 20.04.1 on a Raspberry Pi 4 and connect it to Wi-Fi, including the troubleshooting above as a note.
\nI downloaded the OS image for the Raspberry Pi 4 from the official page below.
\nAt the time of writing, the recommended version was Ubuntu Server 20.04.1 LTS, so I downloaded that.
Install Ubuntu on a Raspberry Pi 2, 3 or 4 | Ubuntu
\nBy the way, choose the OS bitness according to the Raspberry Pi you are installing it on.
\nThe product I bought is a Raspberry Pi 4 Model B, and it seems to use a CPU called “BCM2711.”
Amazon.co.jp: LABISTS Raspberry Pi 4 4GB Kit (with technical conformity mark)
\nDetails about “BCM2711” are also described in the following document.
\ndocumentation/hardware/raspberrypi/bcm2711 at master · raspberrypi/documentation
From the explanation there, you can see that it is a 64-bit CPU with ARM cores.
\nBecause of that, I think the 32-bit version would probably work too, but this time I decided to install the 64-bit version.
The ARM cores can run at up to 1.5GHz, making the Pi4 about 50% faster than the Raspberry Pi 3B+.\nThe new VideoCoreVI3D unit can now run at up to 500MHz.\nThe ARM cores are 64-bit, and although the VideoCore is 32-bit, there is a new memory management unit.\nThis means it can access more memory than previous versions.Reference: documentation/hardware/raspberrypi/bcm2711 at master · raspberrypi/documentation
\nNext, install an image writer to write the downloaded OS onto a bootable SD card.
\nThe image writer provided by the Raspberry Pi Foundation is simple and lightweight, so I recommend it.
\nPrograms for Linux/Mac OS/Windows/Chrome OS can be downloaded from the link below.
Installing operating system images - Raspberry Pi Documentation
\nOnce the installation completes successfully, you will see a screen like this, where you can specify the write destination and the OS image you downloaded earlier.
\nAs noted at the beginning, this error is caused by a bug in To resolve it, you need to connect to the Internet over wired networking once and perform an upgrade. If you check the upgrade above, you can confirm that the This applies the settings, and I was able to connect the Raspberry Pi 4 to Wi-Fi. Even though the Raspberry Pi 4 costs only a few thousand yen, the specs are quite impressive.netplan.io, so systemctl daemon-reload does not fix it. sudo apt update && sudo apt upgrade -ynetplan.io module was updated.
\nRun the following command once again.netplan applySummary
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\nLately I have been writing stock price analysis scripts, so I am thinking about using it as a server to run them.References
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