Compilation error: Error: 2 UNKNOWN: no FQBN provided while board is in and plugged

[jerabaul29]

This may be a duplicate of #151 in which case feel free to close. But it may be another issue (see the "greyed board problem lower down).

• host OS: Ubuntu 20.04

• ide version etc: installed today from your pages:

Version: 2.0.0-beta.7
Date: 2021-05-17T10:10:01.588Z
CLI Version: 0.18.3 alpha [d710b642]

steps

• I installed a board (in my case, the sparkfun apollo3 boards, by adding their board manager url to the preferences URLs list, and then installing from the boards manager). The boards seem to be well present and installed, see the screenshot:

• I plugged in the board inside my computer, it is recognized and shows up on the ttyUSB0; I choose the right board and port. One thing seems strange there though, the board name is greyed out. See screenshot:

• From now on, I get the "message 2 FQBN" issue, see screenshot.

Any idea what causes that?

[per1234]

Hi @jerabaul29. Do you see the boards listed under the Arduino IDE's Tools > Board > Sparkfun Apollo3 Boards menu?

[jerabaul29]

No, I do not see the boards there, see screenshot:

However in the board manager these boards appear as installed:

[per1234]

Please post the output you get in the Linux terminal after starting the Arduino IDE.

[jerabaul29]

Here it is :)

Starting backend process. PID: 8416
Configuring to accept webviews on '^.+\.webview\..+$' hostname.
root WARN please install @theia/electron@1.12.0-next.1a1d7afc as a runtime dependency
root INFO Configuration directory URI: 'file:///home/jj/.theia'
root INFO Theia app listening on http://localhost:42767.
root WARN The local plugin referenced by local-dir:/home/jj/.arduinoIDE/plugins does not exist.
root WARN The local plugin referenced by local-dir:/home/jj/.arduinoIDE/extensions does not exist.
root WARN The local plugin referenced by local-dir:/home/jj/.arduinoProIDE/plugins does not exist.
root INFO PluginTheiaDirectoryHandler: accepting plugin with path
root INFO Resolved "cortex-debug" to a VS Code extension "cortex-debug@0.3.10" with engines:
root INFO PluginTheiaDirectoryHandler: accepting plugin with path
root INFO Resolved "vscode-arduino-tools" to a VS Code extension "vscode-arduino-tools@0.0.1-beta.1" with engines:
root INFO PluginTheiaDirectoryHandler: accepting plugin with path
root INFO Resolved "vscode-builtin-cpp" to a VS Code extension "cpp@1.52.1" with engines:
root INFO PluginTheiaDirectoryHandler: accepting plugin with path
root INFO Resolved "vscode-builtin-json" to a VS Code extension "json@1.46.1" with engines:
root INFO PluginTheiaDirectoryHandler: accepting plugin with path
root INFO Resolved "vscode-builtin-json-language-features" to a VS Code extension "json-language-features@1.46.1" with engines:
root INFO Deploying backend plugin "cortex-debug@0.3.10" from "/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/cortex-debug/extension/dist/extension"
root INFO Deploying backend plugin "vscode-arduino-tools@0.0.1-beta.1" from "/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/vscode-arduino-tools/extension/dist/bundle"
root INFO Deploying backend plugin "cpp@1.52.1" from "/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/vscode-builtin-cpp/extension"
root INFO Deploying backend plugin "json@1.46.1" from "/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/vscode-builtin-json/extension"
root WARN Backend ConfigServiceImpl.onStart is slow, took: 54.1 ms
daemon INFO Starting daemon from /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/arduino-ide-extension/build/arduino-cli...
root INFO Deploying backend plugin "json-language-features@1.46.1" from "/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/vscode-builtin-json-language-features/extension/client/dist/jsonMain"
root INFO Deploy plugins list took: 56.0 ms
daemon INFO Using config file: /home/jj/.arduinoIDE/arduino-cli.yaml
daemon INFO arduino-cli version 0.18.3
daemon INFO Setting up Prometheus metrics on :9090/metrics
daemon INFO Starting daemon on TCP address 127.0.0.1:50051
daemon INFO Daemon is now listening on 127.0.0.1:50051...
daemon INFO Daemon is running.
daemon INFO Checking signature [index: /home/jj/.arduino15/package_index.json, signaturefile: /home/jj/.arduino15/package_index.json.sig, trusted: true]
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig: no such file or directory, index: /home/jj/.arduino15/package_sparkfun_apollo3_index.json, signaturefile: /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig]
daemon INFO Loading hardware from: /home/jj/.arduino15/packages
daemon INFO Loading package SparkFun from: /home/jj/.arduino15/packages/SparkFun/hardware
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig: no such file or directory, index: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json, signaturefile: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig]
daemon INFO Loaded platform [platform: {ID:"SparkFun:apollo3",Installed:"1.2.2",Latest:"2.1.0",Name:"SparkFun Apollo3 Boards"}]
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loaded tool [tool: Version: 8-2018-q4-major Systems: [OS: x86_64-apple-darwin, OS: i386-apple-darwin11, OS: i686-linux-gnu, OS: x86_64-pc-linux-gnu, OS: i686-mingw32]]
daemon INFO Loading package builtin from: /home/jj/.arduino15/packages/builtin
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loaded tool [tool: Version: 5.8-arduino11]
daemon INFO Loaded tool [tool: Version: 1.2.1]
daemon INFO Adding libraries dir [dir: /home/jj/Arduino/libraries, location: user]
daemon INFO Adding libraries dir [dir: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/libraries, location: platform]
root INFO Git askpass helper is listening on http://127.0.0.1:43633.
root INFO Using Git [2.25.1] from the PATH. (/usr/bin/git)
root WARN Frontend CommonFrontendContribution.configure is slow, took: 129.9 ms
root WARN Failed to resolve module: @types/body-parser
root WARN Failed to resolve module: @types/cookie
root WARN Failed to resolve module: @types/express
root WARN Failed to resolve module: @types/fs-extra
root WARN Failed to resolve module: @types/lodash.debounce
root WARN Failed to resolve module: @types/lodash.throttle
root WARN Failed to resolve module: @types/react
root WARN Failed to resolve module: @types/react-dom
root WARN Failed to resolve module: @types/react-virtualized
root WARN Failed to resolve module: @types/route-parser
root WARN Failed to resolve module: @types/safer-buffer
root WARN Failed to resolve module: @types/ws
root WARN Failed to resolve module: @types/yargs
root WARN Failed to resolve module: @theia/monaco
root WARN Failed to resolve module: @theia/editor
root WARN Failed to resolve module: @types/rimraf
root WARN Failed to resolve module: @types/tar-fs
root WARN Failed to resolve module: @types/uuid
root WARN Failed to resolve module: @theia/navigator
root WARN Failed to resolve module: @types/p-queue
root WARN Failed to resolve module: @theia/preferences
root WARN Failed to resolve module: @theia/electron
root WARN Failed to resolve module: @theia/keymaps
root WARN Failed to resolve module: @theia/messages
root WARN Failed to resolve module: @types/diff
root WARN Failed to resolve module: @types/dompurify
root WARN Failed to resolve module: @types/mime
root WARN Failed to resolve module: @types/request
root WARN Failed to resolve module: @types/dateformat
root WARN Failed to resolve module: @types/deepmerge
root WARN Failed to resolve module: @types/glob
root WARN Failed to resolve module: @types/google-protobuf
root WARN Failed to resolve module: @types/js-yaml
root WARN Failed to resolve module: @types/ncp
root WARN Failed to resolve module: @types/ps-tree
root WARN Failed to resolve module: @types/react-select
root WARN Failed to resolve module: @types/react-tabs
root WARN Failed to resolve module: @types/sinon
root WARN Failed to resolve module: @types/temp
root WARN Failed to resolve module: @types/which
root WARN Failed to resolve module: js-yaml
root WARN Failed to resolve module: temp
daemon INFO URL: https://downloads.arduino.cc/packages/package_index.json
daemon INFO Updating index [url: https://downloads.arduino.cc/packages/package_index.json]
root INFO Updating index: package_index.json completed.
root INFO Updating index: package_index.json.sig completed.
daemon INFO Checking signature [error: opening signature file: open /tmp/854071915.sig: no such file or directory, index: /tmp/854071915, signaturefile: /tmp/854071915.sig]
daemon INFO URL: https://raw.githubusercontent.com/sparkfun/Arduino_Apollo3/main/package_sparkfun_apollo3_index.json
daemon INFO Updating index [url: https://raw.githubusercontent.com/sparkfun/Arduino_Apollo3/main/package_sparkfun_apollo3_index.json]
root INFO Updating index: package_sparkfun_apollo3_index.json completed.
daemon INFO Checking signature [error: opening signature file: open /tmp/767957973.sig: no such file or directory, index: /tmp/767957973, signaturefile: /tmp/767957973.sig]
daemon INFO Checking signature [index: /home/jj/.arduino15/package_index.json, signaturefile: /home/jj/.arduino15/package_index.json.sig, trusted: true]
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig: no such file or directory, index: /home/jj/.arduino15/package_sparkfun_apollo3_index.json, signaturefile: /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig]
daemon INFO Loading hardware from: /home/jj/.arduino15/packages
daemon INFO Loading package SparkFun from: /home/jj/.arduino15/packages/SparkFun/hardware
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig: no such file or directory, index: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json, signaturefile: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig]
daemon INFO Loaded platform [platform: {ID:"SparkFun:apollo3",Installed:"1.2.2",Latest:"2.1.0",Name:"SparkFun Apollo3 Boards"}]
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loaded tool [tool: Version: 8-2018-q4-major Systems: [OS: x86_64-apple-darwin, OS: i386-apple-darwin11, OS: i686-linux-gnu, OS: x86_64-pc-linux-gnu, OS: i686-mingw32]]
daemon INFO Loading package builtin from: /home/jj/.arduino15/packages/builtin
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loaded tool [tool: Version: 5.8-arduino11]
daemon INFO Loaded tool [tool: Version: 1.2.1]
daemon INFO Adding libraries dir [dir: /home/jj/Arduino/libraries, location: user]
daemon INFO Adding libraries dir [dir: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/libraries, location: platform]
daemon INFO Updating libraries index
root INFO Updating index: library_index.json completed.
daemon INFO Checking signature [index: /home/jj/.arduino15/package_index.json, signaturefile: /home/jj/.arduino15/package_index.json.sig, trusted: true]
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig: no such file or directory, index: /home/jj/.arduino15/package_sparkfun_apollo3_index.json, signaturefile: /home/jj/.arduino15/package_sparkfun_apollo3_index.json.sig]
daemon INFO Loading hardware from: /home/jj/.arduino15/packages
daemon INFO Loading package SparkFun from: /home/jj/.arduino15/packages/SparkFun/hardware
daemon INFO Checking signature [error: opening signature file: open /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig: no such file or directory, index: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json, signaturefile: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/installed.json.sig]
daemon INFO Loaded platform [platform: {ID:"SparkFun:apollo3",Installed:"1.2.2",Latest:"2.1.0",Name:"SparkFun Apollo3 Boards"}]
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/SparkFun/tools
daemon INFO Loaded tool [tool: Version: 8-2018-q4-major Systems: [OS: x86_64-apple-darwin, OS: i386-apple-darwin11, OS: i686-linux-gnu, OS: x86_64-pc-linux-gnu, OS: i686-mingw32]]
daemon INFO Loading package builtin from: /home/jj/.arduino15/packages/builtin
daemon INFO Checking existence of 'tools' path: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loading tools from dir: /home/jj/.arduino15/packages/builtin/tools
daemon INFO Loaded tool [tool: Version: 5.8-arduino11]
daemon INFO Loaded tool [tool: Version: 1.2.1]
daemon INFO Adding libraries dir [dir: /home/jj/Arduino/libraries, location: user]
daemon INFO Adding libraries dir [dir: /home/jj/.arduino15/packages/SparkFun/hardware/apollo3/1.2.2/libraries, location: platform]
root WARN Frontend EditorNavigationContribution.onStart is slow, took: 2071.8 ms
root INFO Changed application state from 'init' to 'started_contributions'.
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS20
root INFO ------------------------------------------
root INFO Changed application state from 'started_contributions' to 'attached_shell'.
root INFO >>> Restoring the layout state...
root INFO <<< Nothing to restore.
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570) starting instance
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS21
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS22
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS23
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS24
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS25
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS26
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS27
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS28
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS29
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS3
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS30
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS31
root INFO ------------------------------------------
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0] Sync of 5 plugins took: 702.6 ms
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS4
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS5
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS6
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS7
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS8
root INFO ------------------------------------------
root INFO Attached boards and available ports changed:
root INFO  - New port is available on /dev/ttyS9
root INFO ------------------------------------------
root INFO Changed application state from 'attached_shell' to 'initialized_layout'.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][marus25.cortex-debug]: Loaded contributions.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][arduino.vscode-arduino-tools]: Loaded contributions.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.cpp]: Loaded contributions.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.json]: Loaded contributions.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.json-language-features]: Loaded contributions.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0] Load contributions of 5 plugins took: 42.3 ms
root WARN 'cpp' language is remapped from 'source.cpp.embedded.macro' to 'source.cpp' scope
root WARN a registered grammar configuration for 'cpp' language is overridden
root INFO Changed application state from 'initialized_layout' to 'ready'.
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): PluginManagerExtImpl/init()
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): initializing(cortex-debug@0.3.10 with /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/@theia/plugin-ext-vscode/lib/node/plugin-vscode-init.js)
root INFO [hosted-plugin: 8570] Debugger contribution has been registered: cortex-debug
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): initializing(vscode-arduino-tools@0.0.1-beta.1 with /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/@theia/plugin-ext-vscode/lib/node/plugin-vscode-init.js)
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): initializing(cpp@1.52.1 with /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/@theia/plugin-ext-vscode/lib/node/plugin-vscode-init.js)
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): initializing(json@1.46.1 with /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/@theia/plugin-ext-vscode/lib/node/plugin-vscode-init.js)
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): initializing(json-language-features@1.46.1 with /home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/node_modules/@theia/plugin-ext-vscode/lib/node/plugin-vscode-init.js)
root INFO [hosted-plugin: 8570] PLUGIN_HOST(8570): PluginManagerExtImpl/loadPlugin(/home/jj/Desktop/Jean/Software/arduino/arduino-ide_2.0.0-beta.7_Linux_64bit/resources/app/plugins/vscode-builtin-json-language-features/extension/client/dist/jsonMain)
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][marus25.cortex-debug]: Started plugin.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][arduino.vscode-arduino-tools]: Started plugin.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.cpp]: Started plugin.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.json]: Started plugin.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0][vscode.json-language-features]: Started plugin.
root INFO [84fa8903-7c13-42c6-a7ec-79d623fe47b0] Start of 5 plugins took: 2311.2 ms

[jerabaul29]

(just launching as $ ./arduino-ide.

[SamGeens]

I updated from beta.5 to beta.8 today and I am now experiencing the same problem (on Windows). The Generic ESP boards are now grayed out and the same message occurs Compilation error: Error: 2 UNKNOWN: no FQBN provided.

UPDATE:

It seems to be an problem with updating the Arduino IDE, onces the Arduino IDE is updated just uninstall and re-install the ESP boards library in the Boards Manager.

[per1234]

I was not able to reproduce this issue of the SparkFun Apollo3 Boards platform not appearing under the IDE's board menus until I finally spotted the essential clue:
#421 (comment)

daemon INFO Loaded platform [platform: {ID:"SparkFun:apollo3",Installed:"1.2.2",Latest:"2.1.0",Name:"SparkFun Apollo3 Boards"}]

Notice that version 1.2.2 was installed, but the latest version offered by the package index at that time was 2.1.0

There was a bug where the IDE did not recognize outdated boards platforms. This was actually a bug in the Arduino CLI tool the Arduino IDE uses to handle all the non-GUI tasks: arduino/arduino-cli#1401

That bug has already been fixed: arduino/arduino-cli#1410

The fixed version of Arduino CLI is used starting with Arduino IDE 2.0.0-beta.12, so you should no longer experience this issue when using the latest version of the IDE.