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[GH-ISSUE #28] breaks on PopOS 20.04 #27

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opened 2026-02-27 22:07:29 +03:00 by kerem · 4 comments

kerem commented

2026-02-27 22:07:29 +03:00

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Originally created by @luiscarbonell on GitHub (Jun 8, 2020).
Original GitHub issue: https://github.com/sickcodes/Docker-OSX/issues/28

Recreating

PopOS 20.04 (i.e. Ubuntu 20.04)
Docker 19.03.9

Issue

All commands seam to break because of an issue with KVM/QEMU or part of the build process...

This command got me the furthest:

docker run --privileged --net=host --cap-add=ALL -v /tmp/.X11-unix:/tmp/.X11-unix -v /dev:/dev -v /lib/modules:/lib/modules sickcodes/docker-osx

But it gives me the following stack trace.... 🤷‍♂️

No protocol specified
Unable to init server: Could not connect: Connection refused
QEMU 5.0.0 monitor - type 'help' for more information
(qemu) ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Device or resource busy
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Device or resource busy
audio: Failed to create voice `dac'
gtk initialization failed

Originally created by @luiscarbonell on GitHub (Jun 8, 2020). Original GitHub issue: https://github.com/sickcodes/Docker-OSX/issues/28 ## Recreating - PopOS 20.04 (i.e. Ubuntu 20.04) - Docker 19.03.9 ## Issue All commands seam to break because of an issue with KVM/QEMU or part of the build process... This command got me the furthest: ```bash docker run --privileged --net=host --cap-add=ALL -v /tmp/.X11-unix:/tmp/.X11-unix -v /dev:/dev -v /lib/modules:/lib/modules sickcodes/docker-osx ``` But it gives me the following stack trace.... 🤷‍♂️ ``` No protocol specified Unable to init server: Could not connect: Connection refused QEMU 5.0.0 monitor - type 'help' for more information (qemu) ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave alsa: Could not initialize DAC alsa: Failed to open `default': alsa: Reason: Device or resource busy ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave alsa: Could not initialize DAC alsa: Failed to open `default': alsa: Reason: Device or resource busy audio: Failed to create voice `dac' gtk initialization failed ```

kerem closed this issue

2026-02-27 22:07:30 +03:00

kerem commented

2026-02-27 22:07:30 +03:00

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Owner

@sickcodes commented on GitHub (Jun 9, 2020):

Upstream QEMU? Was it working for you yesterday? Have you done all the README fixes? There are some closed issues specific to Pop! OS

@sickcodes commented on GitHub (Jun 9, 2020): Upstream QEMU? Was it working for you yesterday? Have you done all the README fixes? There are some closed issues specific to Pop! OS

kerem commented

2026-02-27 22:07:30 +03:00

Author

Owner

@sickcodes commented on GitHub (Jun 9, 2020):

https://github.com/sickcodes/Docker-OSX/issues/4

@sickcodes commented on GitHub (Jun 9, 2020): https://github.com/sickcodes/Docker-OSX/issues/4

kerem commented

2026-02-27 22:07:30 +03:00

Author

Owner

@sickcodes commented on GitHub (Jun 9, 2020):

Let me know if that fixed it @luiscarbonell and we can close this

@sickcodes commented on GitHub (Jun 9, 2020): Let me know if that fixed it @luiscarbonell and we can close this

kerem commented

2026-02-27 22:07:30 +03:00

Author

Owner

@sickcodes commented on GitHub (Jun 10, 2020):

Recreating

PopOS 20.04 (i.e. Ubuntu 20.04)
Docker 19.03.9

Issue

All commands seam to break because of an issue with KVM/QEMU or part of the build process...

This command got me the furthest:

docker run --privileged --net=host --cap-add=ALL -v /tmp/.X11-unix:/tmp/.X11-unix -v /dev:/dev -v /lib/modules:/lib/modules sickcodes/docker-osx

But it gives me the following stack trace.... 🤷‍♂️

No protocol specified
Unable to init server: Could not connect: Connection refused
QEMU 5.0.0 monitor - type 'help' for more information
(qemu) ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Device or resource busy
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
alsa: Could not initialize DAC
alsa: Failed to open `default':
alsa: Reason: Device or resource busy
audio: Failed to create voice `dac'
gtk initialization failed

Missing $DISPLAY please check the readme and you should be fine. POP OS seemed to be running on display :0 or :1 whereas many others on :0.0

This is solved by adding

-e DISPLAY=${DISPLAY}

@sickcodes commented on GitHub (Jun 10, 2020): > ## Recreating > * PopOS 20.04 (i.e. Ubuntu 20.04) > * Docker 19.03.9 > > ## Issue > All commands seam to break because of an issue with KVM/QEMU or part of the build process... > > This command got me the furthest: > > ```shell > docker run --privileged --net=host --cap-add=ALL -v /tmp/.X11-unix:/tmp/.X11-unix -v /dev:/dev -v /lib/modules:/lib/modules sickcodes/docker-osx > ``` > > But it gives me the following stack trace.... 🤷‍♂️ > > ``` > No protocol specified > Unable to init server: Could not connect: Connection refused > QEMU 5.0.0 monitor - type 'help' for more information > (qemu) ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave > alsa: Could not initialize DAC > alsa: Failed to open `default': > alsa: Reason: Device or resource busy > ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave > alsa: Could not initialize DAC > alsa: Failed to open `default': > alsa: Reason: Device or resource busy > audio: Failed to create voice `dac' > gtk initialization failed > ``` Missing $DISPLAY please check the readme and you should be fine. POP OS seemed to be running on display :0 or :1 whereas many others on :0.0 This is solved by adding `-e DISPLAY=${DISPLAY}`