Can anyone confirm if this is working now? I tried to follow some of the steps and troubleshooting seen in this thread and it didn’t work.
I can’t get the cooling or usb front ports of the deskpi pro to work.
Just ran across this today as I’m trying to get the fan working in my DeskPi pro. It keeps failing. Here is the log:
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
could not find /dev/ttyUSB0. This addon cannot continue without a serial device. Here is a list of possible SerialDevice:
ls: /dev/ttyUSB*: No such file or directory
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
could not find /dev/ttyUSB0. This addon cannot continue without a serial device. Here is a list of possible SerialDevice:
ls: /dev/ttyUSB*: No such file or directory
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
could not find /dev/ttyUSB0. This addon cannot continue without a serial device. Here is a list of possible SerialDevice:
ls: /dev/ttyUSB*: No such file or directory
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
nc: bind: Address in use
Current Temperature 111 °F
Quiet Level 2 - Fan 20% (Low)
/run.sh: line 88: /dev/tty0: Operation not permitted
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
nc: bind: Address in use
Current Temperature 116 °F
/run.sh: line 97: /dev/tty0: Operation not permitted
Quiet Level 3 - Fan 50% (Medium)
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
Current Temperature 116 °F
nc: bind: Address in use
Quiet Level 3 - Fan 50% (Medium)
/run.sh: line 97: /dev/tty0: Operation not permitted
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
punt!
I think this is finally working. I pulled the power TWICE after running the serial configurator (missed that initially) and ttyUSB0 became available. Configured the DeskPi Pro add-in for that and it now seems to be running.
Anyone getting stuck just on the install?
What I see intially (pop up error): Failed to install app
An unknown error occurred while trying to build the image for app 3c1fdc58_deskpipro. Check Supervisor logs for details
From supervisor logs:
ERROR: failed to build: failed to solve: base name ($BUILD_FROM) should not be blank
2026-04-25 18:06:36.494 ERROR (MainThread) [supervisor.addons.addon] Could not build image for app 3c1fdc58_deskpipro: Docker build failed for 3c1fdc58/aarch64-addon-deskpipro:0.6a (exit code 1). Build output:
#0 building with “default” instance using docker driver
#1 [internal] load build definition from Dockerfile
#1 transferring dockerfile: 196B done
#1 WARN: InvalidDefaultArgInFrom: Default value for ARG $BUILD_FROM results in empty or invalid base image name (line 3)
#1 DONE 0.1s
1 warning found (use docker --debug to expand):
- InvalidDefaultArgInFrom: Default value for ARG $BUILD_FROM results in empty or invalid base image name (line 3)
Dockerfile:3
1 | ARG BUILD_FROM
2 |
3 | >>> FROM $BUILD_FROM
4 | ENV LANG C.UTF-8
5 | WORKDIR /data
ERROR: failed to build: failed to solve: base name ($BUILD_FROM) should not be blank
Ok I got this fixed - apparently as of Apr 2026 HA no longer automatically populates the BUILD_FROM arg so it has to be set. I forked the original code and changed the first few lines of the DockerFile with the below lines and it now builds correctly:
ARG BUILD_FROM=ghcr.io/home-assistant/base:latest
FROM $BUILD_FROM
I’ll take a patch if you submit. I can’t test so I’m not going to make blind changes.
Yes; I've been using my deskpi without the outer case due to lack of cooling fan since I switched to HAOS. I saw your suggestion yesterday and confirmed this works on HAOS 17.3 snapshot flashed to SSD removed from the deskpi build using pi-imager to wipe and install and adding the deskpi cooling app successfully by following your edit to line 1 of "Dockerfile".
Since this has yet to be opened as an issue, and I'm not familiar with the method to create patch file from original, I uploaded both files in an open ticket. with request for patch for those encountering the same issue.
For anyone looking to replicate my steps, I used Samba Share app from HAOS configuration credentials in Root Explorer app in my phone to copy the "Dockerfile" file found at smb:/addons/deskpi/HassOSDeskPiPro/DeskPiPro edit it locally, then paste it over original in above location. Then update repositories and install the Deskpi Cooling app.
But the prior steps needed to manually download the repo to edit it were:
mkdir /addons/HassOSDeskPiPro
cd /addons/HassOSDeskPiPro
git clone GitHub - adamoutler/HassOSDeskPiPro: Temperature Control for Desk Pi Pro in Home Assistant · GitHub
(entered in Terminal as one copy and paste line).
The Samba Share app was recommended as a recurring solution to the issue of editing read only file system like HAOS. BUT personal use of such methods and code implies to use at your own risk; make a backup copy and store it remotely prior to editing, ect, ect... be confident and safe when doing such. But I share because I'm often finding incomplete or not easily followed steps in shared posts. There are other methods like Terminal that can be used to those more comfortable with it.
Thanks for sharing this! And I hope the developer finds the suggestion useful to patch for others to use without having to manually edit to use.