[PATCH 0/1][SRU][J/L/U] Fail to output sound to external monitor which connects via docking station
Stefan Bader
stefan.bader at canonical.com
Mon Mar 6 10:48:23 UTC 2023
On 06.03.23 06:13, Chris Chiu wrote:
> BugLink: https://bugs.launchpad.net/bugs/2009024
>
> [Impact]
> No sound output from the external monitor which connect via some docking station. It only happens when user boot the system with docking station connected. Re-plug the docking station can fix this issue. Or plug the docking station later won't trigger this problem.
>
> [Fix]
> Turn on the CONFIG_SND_HDA_INTEL_HDMI_SILENT in kernel config. It will start sending an "audio keepalive" to the monitor as soon as it is connected.
>
> [Test]
> Connect the external monitor to the Atomic Type-C Dock (HD22Q) and boot the system with the dock connected. Play sound via HDMI/DP port and check if there's any audio output from the external monitor.
>
> [Where problems could occur]
> It sends the "audio keepalive"(silent stream) to the monitor when connected. Doesn't affect original workflow of the audio system.
>
> Chris Chiu (1):
> UBUNTU: [Config] Enable CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM
>
> debian.master/config/annotations | 2 +-
> debian.master/config/config.common.ubuntu | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
What about Kinetic?
- Stefan
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