I just tested it on a laptop with intel graphics, and sound and playback is
perfectly normal on 60Hz when playing through the HDMI (playing on the
television). Same cable, same television - only connected to my laptop instead.
This makes me wonder whether this could be an issue in the kernel
I don't know if the speed is exactly doubled, by but changing the output
definitely changes the playback speed of any media.
I tried making a video to show it: https://youtu.be/hlqw_ijdxOE
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However, audio going through USB on the X1 ThinkVision (called "Analog Output -
X1") is now playing correctly in Wayland with both monitors at 60Hz.
When selecting the television output "HDMI / DisplayPort - Vega 20 HDMI Audio
[Radeon VII]" on Wayland with 60Hz on both monitors, the playback
This does not fix the issue. Playback is still double and high pitched in
Wayland with both monitors at 60Hz.
In Xorg I can still only select 30Hz as the maximum on the television.
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Also because Wayland allows the television to be at 60Hz, whenever I
login (after boot) and have it in mirror mode, the sound is therefore
too fast by default.
I cannot change it, since the HDMI port is the first port on the GPU and
the DisplayPort port is the second. This means it by default
** Summary changed:
- Wayland dual monitor 60Hz: High pitch audio
+ Wayland dual monitor from 30Hz to 60Hz: High pitch audio double playback speed
** Summary changed:
- Wayland dual monitor from 30Hz to 60Hz: High pitch audio double playback speed
+ Wayland dual monitor switch from 30Hz to
** Summary changed:
- Wayland dual monitor 60Hz: High pitch audio and fast playback
+ Wayland dual monitor switch from 30Hz to 60Hz: High pitch audio double
playback speed
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Public bug reported:
I described the issue here first:
https://bugs.launchpad.net/ubuntu/+bug/1957816
I am not sure it belongs here, but after the initial report i made an
audio issue report with `ubuntu-bug -s audio`
copy/paste:
I have a desktop computer with a 60Hz 4K display connected
I also reverted to Linux kernel 4.18.0-13-generic (The one that ships
with Ubuntu 18.10) after upgrading to 19.04.
System: HP Spectre 13 v000nf, 8 GB Memory, Dual core Intel i5-6200U CPU
@ 2.30 GHz, Intel HD Graphics 520 (Skylake GT2)
When running 'sudo apt upgrade' it complains about a missing
Public bug reported:
To be honest, I know very little about what happened. I only went to try
Unity 8 and then went back to Unity 7. When logged in with Unity 7, many
of the programs from Unity 8 where appearently still running and many of
the crashed.
ProblemType: RecoverableProblem
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