Same issue. I can't make that change on the screen I have (ThinKVision)
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Title:
Display powersave only blanks, but does not turn off
To manage n
Oh man, we all'd be glad if this is fixed finally. But this bug has been
reported 1.5y ago, others and upstream even earlier. In theory there
were fix in upstream Gnome, but then they broke it again. It doesn't
seem likely Canonical would ever backport them before actual pick of new
Gnome takes pla
While it is nice to have a workaround based on changing the
configuration in the screen, I'd really appreciate to get an actual fix.
I actually need my screen to stay with "auto select input" ON because I
have a screen with built-in KVM switch and use 2 devices (PC & laptop).
Therefore disabling t
For one of my two new 24.04 machines, the connection is from hdmi out
through a dvi adaptor to an older monitor. that machine has no problem
with fully blanking the monitor. maybe it is some sort of hdmi audio
handshake that results in waking up the new IPS monitors and ends with
them having their
@sebastien. yes, you are right. after a few seconds of no back light,
the back light returns.
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Title:
Display powersave only blanks, but does not
@jmairey Sorry, but I disagree.
Well, first of all, I have to agree with you on one thing: these
settings are confusing, yes. But I doubt you found the solution to the
problem.
REMINDER: When you do tests, don't forget to "undo" your workaround,
obviously!
1. Blank Screen delay can be adjusted f
I encountered this issue also. But I see what is happening.
There are two settings screens that allow modification of this behavior
and I would say that is an inconsistency that could be fixed.
Screen Lock (Settings-> Privacy & Security) seems to control both blank
screen delay AND also automatic
I did not get to finish editing comment #77 before it was posted. I
wanted two screen shots attached. it posted after one.
But basically screen lock turns off the backlight.
screen blank does not.
This second screen shot goes with bug comment #77.
** Attachment added: "Screenshot from 2024-10
** Changed in: gnome-settings-daemon (Ubuntu)
Milestone: None => ubuntu-25.04-beta
** Changed in: mutter (Ubuntu)
Milestone: None => ubuntu-25.04-beta
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Same issue here.
CPU: Intel Core i5-6500
Graphics: Intel HD Graphics 530 (integrated GPU)
** Attachment added: "inxi --basic --graphics"
https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1971434/+attachment/5832580/+files/inxi--basic--graphics.txt
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This bug is supposed to be fixed in the kernel driver:
https://bugzilla.kernel.org/show_bug.cgi?id=215203
Then it's been reported this workaround help people who don't have other option
(like me) than HDMI and their monitor doesn't have menu option to disable
automatic switching between ports:
h
Change from HDMI to DisplayPort cable works for me.
Ubuntu 24.10
Monitor Philips 276E
Radeon 740M Graphics
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Title:
Display powersave only blanks
Same issue, using Asus NUC
24.04.1
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Title:
Display powersave only blanks, but does not turn off
To manage notifications about this bug go to:
ht
I log into a "classic" x11 session and do this:
sleep 1; xset dpms force off; sleep 10; xset q | grep "Monitor is"
And then I read "Monitor is Off", which is clearly displayed, visible,
on this monitor which is supposedly "Off"...
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I login my system from SSH, and watch the udevadm monitor, those log is
printing right before the screen wake up:
```plaintext
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
KERNEL[1095.780845] change /devices/p
OK, in my case my Lenovo L28u-30 doesn't have option to disable
autoswitch.
What I noticed on 24.04, however, is that if I lock the screen with 🪟+L
and the notebook (Lenovo P16s) screen goes full blank and then I turn
off L28u-30 with switch, it stays blank (so I can save backlight).
But, if I le
Thanks for working on this!
The discussion about unplug events being the cause made me wonder
whether this is also the source of a similar problem I have as well: On
my ThinkPad T14 with Ubuntu 22.04 and Wayland, closing the lid wakes the
notebook up from sleep mode. I.e., if I enter standby and t
@vanvugt "If we could reproduce this reliably in development (...)". I
tested it many times here and it is absolutely constant, regular,
persistent, stable.
- Monitor's internal settings > "Auto Input Switch" = on : This bug always
shows, in every conditions.
- Monitor's internal settings > "Auto
I believe you can do it with "udevadm monitor".
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Title:
Display powersave only blanks, but does not turn off
To manage notifications about this
@vanvugt How can I monitor those unplug events and try to debug this
issue?
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Title:
Display powersave only blanks, but does not turn off
To mana
@vanvugt I tried adding
MUTTER_DEBUG_FORCE_KMS_MODE=simple
to /etc/environment and restart. It didn't work. On Ubuntu 24.04.1 LTS and
Wayland.
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Ti
"some message back to the computer" is probably a hotplug (or unplug)
event. That's why the first workaround works for you, because the
monitor is no longer doing a logical disconnection when it goes to
sleep.
If we could reproduce this reliably in development then it might be
possible to just ign
I have the same bug as the OP. And the workaround number one also worked
for me. However, I was reading all those comments and I found some
little differences, listed below...
- on Ubuntu 24.04.1.
- on Wayland, and also tested on X11.
I get this bug on both Wayland and X11. Using either Super+L o
** Changed in: mutter
Status: Unknown => New
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Title:
Display powersave only blanks, but does not turn off
To manage notifications about t
** 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`, they do properly turn off and go to powersave mode.
+
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1607
https://gitlab.gnome.org/GNOME/mutter/-/issues/1607
** Also affects: mutter via
https://gitlab.gnome.org/GNOME/mutter/-/issues/1607
Importance: Unknown
Status: Unknown
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Experiencing the same behavior as #55.
Locking with super+L urns off screen initially but after few seconds screen
light goes back on.
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Title:
D
A black screen is not a security issue. We're only talking about
backlight power here.
** Information type changed from Public Security to Public
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** Information type changed from Public to Public Security
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Title:
Display powersave only blanks, but does not turn off
To manage notifications
MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 is deprecated and replaced by:
MUTTER_DEBUG_FORCE_KMS_MODE=simple
in Ubuntu 24.04.
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Title:
Display powersave
The MUTTER_DEBUG_ENABLE_ATOMIC_KMS didn't work for me neither
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Title:
Display powersave only blanks, but does not turn off
To manage notificatio
+1, fresh 24.04 install running wayland on intel drivers.
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Title:
Display powersave only blanks, but does not turn off
To manage notifications a
I can confirm #52: Works fine for me on DisplayPort, broken on HDMI.
My system is described in #21.
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Title:
Display powersave only blanks, but d
+1, fresh 24.04 install running wayland on intel drivers. At this point
it seems like the bug affects many different setups.
xset dpms force off
Does trigger the correct behavior.
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https
I've got the same thing on a fresh 24.04 install running X11. I've got
three monitors, two on HDMI, one on display port.
I'm running the Nouveau drivers.
Locking with Super-L turns the backlight off for a few seconds then it
comes back on, usually with the cursor showing as well.
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ubuntu 24.04 kernel 6.8.0-31-generic
lspci -k | grep -EA3 'VGA|3D|Display'
00:02.0 VGA compatible controller: Intel Corporation JasperLake [UHD Graphics]
(rev 01)
DeviceName: Onboard - Video
Subsystem: Intel Corporation JasperLake [UHD Graphics]
Kernel driver in use: i915
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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Title:
Display powersave only blanks, b
** Tags added: mantic noble
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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 n
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 t
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 po
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 don'
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 /usr
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 powersa
Having same issue on Xorg with Nvidia-driver-510.
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Title:
Display powersave only blanks, but does not turn off
To manage notifications about thi
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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