On Wednesday 25 January 2023, Masaru Nomiya wrote:

Hello,

In the Message;

Subject : [oS-EN] New monitor when sent to sleep doesn't awake Message-ID : Date & Time: Tue, 24 Jan 2023 20:31:33 +0100

[CER] == "Carlos E. R." has written:

CER> Hi,

CER> I have a new monitor on this old machine at a secondary location. Got it cheap, CER> a returned item to a shop. An LG 22MP410, connected to my old machine with CER> Nvidia graphics.

CER> The problem is that (apparently) when the desktop sends the CER> display to sleep for inactivity, pressing a key doesn't wake it CER> up. Nor disconnecting both cables. What works is pressing the CER> menu key of the monitor. [...]

What is the result of;

# cat /sys/devices/system/cpu/cpuidle/current_driver

Regards.

--- ┏━━┓彡 Masaru Nomiya mail-to: m.nomiya+suse @ gmail.com

Some LG monitors have an inbuilt Automatic Standby Mode. Could it be that? There is normally a menu entry for setting it off. DisplayPort versus HDMI may also make a difference. DisplayPort seems to have more ability to signal the state of the monitor - which is not always a good thing.

Hello, In the Message; Subject : Re: [oS-EN] New monitor when sent to sleep doesn't awake Message-ID : <5d1afbb4-89c2-a1d5-4b2f-f5cf9a8ea288@telefonica.net> Date & Time: Wed, 25 Jan 2023 11:17:57 +0100 [CER] == "Carlos E. R." has written: CER> On 2023-01-25 10:57, Michael Hamilton wrote: CER> > On Wednesday 25 January 2023, Masaru Nomiya wrote: CER> >> Hello, CER> >> CER> >> In the Message; CER> >> CER> >> Subject : [oS-EN] New monitor when sent to sleep doesn't awake CER> >> Message-ID : CER> >> Date & Time: Tue, 24 Jan 2023 20:31:33 +0100 CER> >> CER> >> [CER] == "Carlos E. R." <...> has written: [...] CER> >> What is the result of; CER> >> CER> >> # cat /sys/devices/system/cpu/cpuidle/current_driver CER> I'll try that tomorrow, today I'm at home. It's bitterly cold in Japan from today, and the attention to the elderly is bothering me, so I'm going to bed too. MH> > Some LG monitors have an inbuilt Automatic Standby Mode. Could it be MH> > that? There is normally a menu entry for setting it off. Ah, I see. I suspected the influence of the CPU's power saving mode. Regards. --- ┏━━┓彡 野宮 賢 mail-to: m.nomiya+suse @ gmail.com ┃＼／彡 ┗━━┛ "No Windows, no gains!" ... "Why, I am wrong?" -- Bill --

On 2023-01-25 11:17, Carlos E. R. wrote:

On 2023-01-25 10:57, Michael Hamilton wrote:

...

On Wednesday 25 January 2023, Masaru Nomiya wrote:

...

Hello,

In the Message;

   Subject    : [oS-EN] New monitor when sent to sleep doesn't awake    Message-ID :    Date & Time: Tue, 24 Jan 2023 20:31:33 +0100

[CER] == "Carlos E. R." <...> has written:

...

...

...

What is the result of;

   # cat /sys/devices/system/cpu/cpuidle/current_driver

I'll try that tomorrow, today I'm at home.

Elesar:~ # cat /sys/devices/system/cpu/cpuidle/current_driver acpi_idle Elesar:~ #

...

Some LG monitors have an inbuilt Automatic Standby Mode.  Could it be that?  There is normally a menu entry for setting it off.

I think it was set to 4 hours, but tomorrow I'll try to set that off. Maybe it did not detect the day activity?

That was it. I happened to be at the machine, typing, when a black box popped up saying that the monitor would switch off in 5 minutes because there was no activity. So I changed that from 4 hours to off. We'll see if that does the trick. Funny it does not see the activity. It is a monitor, not a TV... -- Cheers / Saludos, Carlos E. R. (from Elesar, using openSUSE Leap 15.4)

On 2023-01-26 18:47, Michael Hamilton wrote:

On Friday 27 January 2023, Carlos E. R. wrote:

...

...

...

...

Some LG monitors have an inbuilt Automatic Standby Mode.  Could it be that?  There is normally a menu entry for setting it off.

I think it was set to 4 hours, but tomorrow I'll try to set that off. Maybe it did not detect the day activity?

That was it. I happened to be at the machine, typing, when a black box popped up saying that the monitor would switch off in 5 minutes because there was no activity.

So I changed that from 4 hours to off. We'll see if that does the trick.

Funny it does not see the activity. It is a monitor, not a TV...

Is it a second monitor and almost all activity happens on your main monitor? The monitor firmware will be looking for changes in content. If there are no changes, it will trigger standby.

No, single monitor of a secondary machine. My previous desktop machine, with over 10 years of use, set at another location. New monitor, but a refurb.

If you ran a clock, cpu-meter, network-meter, or similar on that monitor, that should be enough change to keep it awake.

Well, I was using the machine and doing things all the morning.

But yeah, I'd turn it off.

-- Cheers / Saludos, Carlos E. R. (from Elesar, using openSUSE Leap 15.4)

On 2023-01-25 11:27, Per Jessen wrote:

Carlos E. R. wrote:

...

It has a... tiny "joystick" in a recess under the bottom edge. It can be pressed, which activates the menu, and moved to the sides as a cursor key. I found it by blind touching everywhere this morning. The papers don't mention it.

The joystick is in the manual - page 10, "User Settings".

Ah, must be the online extended manual. Not in the papers I got. Or being a refurb, that paper was missing.

I also have some system combinations where monitor blanking/power-saving just does not work - I believe it is most often a driver issue, but I have never really had sufficient time/help to look into it.

Fortunately, it is no longer a really important issue, but it still would be nice to have.

Indeed. I suspect card-driver issues, because the previous monitor, a very old old one (flat, not CRT, 4/3 form factor, low res) had trouble as well. Being old, I thought it was just that, changed protocols. But this one is new, so it may be that the nouveau toolset doesn't fully handle this card. And proprietary driver is hell in this machine (not supported any longer, old card), it was one of the reasons I bought another machine with AMD (this is my previous desktop machine). -- Cheers / Saludos, Carlos E. R. (from 15.4 x86_64 at Telcontar)

On 2023-01-25 14:50, Patrick Shanahan wrote:

* Carlos E. R. [01-25-23 06:12]:

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On 2023-01-25 11:27, Per Jessen wrote:

...

Carlos E. R. wrote:

you might look into xset, shows/sets/controls many monitor control states

xset q will display current settings

I use xset to control screen blanking xset +dpms xset dpms 300 400 500 xset s on

inserted into .bashrc

I have also used it to set immediate blanking

maybe will help...

I'll try, thanks. -- Cheers / Saludos, Carlos E. R. (from 15.4 x86_64 at Telcontar)