Please report crashes as separate bugs.
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https://bugs.launchpad.net/bugs/2106437
Title:
monitors never dpms off when three present
To manage notifications about this
I've also observed that the system crashes now when it never used to do
so. I've had to disable the monitor from the configuration unless I need
a third monitor. Got any more ideas?
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None of the on-screen menus for the monitors are auto. There is no auto
setting in fact.
• monitor 1 is set to DP (lower left),
• monitor 2 is set to DP (lower right),
• monitor 3 is set to HDMI1.4 (center top)
It will only dpms off if I turn off monitor 3 (HDMI1.4). My mobo has 3
monitor connect
> Configure the monitor (in its own menus) to not auto-switch inputs.
This means go into the monitor's on-screen menu and look at input
selection. Make sure it's not configured to automatically switch inputs,
but instead fixed on a single input port.
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In the past I've tried to disable audio as Google was suggesting that
was one of the issues. No joy. My computer only has the ports it has. I
believe it was 2xHDMI 1xDP. I'm using the MOBO video (no special card).
I'm not sure what the first item "Configure the monitor (in its own
menus) to not aut
Possible workarounds (copied from bug 1971434):
* Configure the monitor (in its own menus) to not auto-switch inputs.
* Change from HDMI to DisplayPort cables.
* Disable HDMI audio output.
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Turns out my idea in comment #3 is already implemented in GNOME 48
(Ubuntu 25.04):
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4209/diffs?commit_id=313860e2fab15249337f70d0c298dd02b903c7b9
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This is related to events coming from one or more monitors, which the
system might treat as a reason to wake up. Sometimes a monitor will
add/remove audio support, or disconnect entirely, when going to sleep.
And that can give the OS the impression that something important is
happening which should
If I could reproduce it myself then I would probably look at making
Mutter ignore all monitor events for a second or two after it has been
told to go to sleep. But if I can't reproduce the bug then I can't test
fixes for it.
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