This is very interesting observation, maybe it'll help devs chase the
bug.
Unfortunately for myself, I have only HDMI both in the notebook and the
docking station.
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This problem is only with HDMI cables. I switched to Display port today
and I no longer have that issue.
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https://bugs.launchpad.net/bugs/1971434
Title:
Display powersave only blanks,
** Tags added: mantic noble
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https://bugs.launchpad.net/bugs/1971434
Title:
Display powersave only blanks, but does not turn off
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I have this bug since 23.10. After upgrading to 24.04 it is still there
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Title:
Display powersave only blanks, but does not turn off
To manage
We should solve this issue before Earth Day. It has caused a lot of
wastage of electricity.
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Title:
Display powersave only blanks, but does not
Yes I too have believed for years there must be a feedback problem
causing this. The reason it's still not fixed is just that it's so
rare... every time I try to debug it the problem doesn't happen at all.
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I can confirm with #47, I have dual system on the same machine, Windows
is works without issue, and Ubuntu does have.
My monitor is HDMI but not Lenovo.
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This is Gnome bug I presume that manifests mostly on Ubuntu (clash with
Canonical's tweaks) with some HDMI monitors (mostly Lenovo). The same
monitors work as intended under Windows.
My bet is they send some message back to the computer when they change
power state after requested to go to full
This bug is annoy.
I have test on Ubuntu 20.04, 22.04, 23.04, 24.04. All of them have the same bug
on my machine.
And I also have tested on the HDMI and Display port on the motherboard side.
And when I switch to LightDM, the monitor can turn off but the lock
screen shortcut won't work and I
I use the wayland session. I sort of have this bug. The screens do power
off, but then the backlights resume. It is still a blank screen
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I had the same issue after upgrading to ubuntu 22.04 and the logs showed
the following error.
Failed to connect to the screen saver: Error al llamar
StartSereviceByName para org.gnome.ScreenSaver: Failed to execute
program org.gnome.ScreenSaver: No such file or directory
The missing file was
Same on 22.04 Gnome Xorg, Nouveau driver on a GeForce GTX 1650 Ti Mobile
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Title:
Display powersave only blanks, but does not turn off
To manage
Same issue on 22.04 Gnome Wayland session, Nouveau driver on a Geforce
MX450 (Iris Xe Graphics onboard using i915 driver)
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Title:
Display
Having same issue on Xorg with Nvidia-driver-510.
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Title:
Display powersave only blanks, but does not turn off
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One extra observation: when I use "xset dpms force off" to send the
display to sleep, it stays in sleep indefinitely until the next user
input, so apparently g-s-d never touches the power state.
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I'm using Xorg 2:21.1.3-2ubuntu2, with kms on "Intel Iris Plus Graphics
(G7)". Xorg.0.log attached as well.
** Attachment added: "Xorg.0.log"
https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1971434/+attachment/5586349/+files/Xorg.0.log
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apport information
** Tags added: apport-collected
** Description changed:
Recently upgraded to Ubuntu 22.04, and it seems like the power-saving
feature in Gnome 42 does not actually turn off the screen(s) after X
minutes, but just blanks them. When I manually run `xset dpms force
off`,
Thank you for your bug report. Could you do
$ apport-collect 1971434
do you use an xorg or wayland session and with which videodriver?
** Changed in: gnome-settings-daemon (Ubuntu)
Importance: Undecided => Low
** Changed in: gnome-settings-daemon (Ubuntu)
Status: New => Incomplete
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