Problem forcing monitor to standby

[Allen Weiner]

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My multiboot desktop PC runs Fedora 11 and Ubuntu 9.04. The PC has an LCD monitor and a GeForce 6200 graphics card. On both Fedora and Ubuntu I use the proprietary nvidia driver provided by the distro.

On my desktop (both Fedora & Ubuntu) I have a script I use to force my monitor into standby. I run this when I'm going to be away from the PC for an extended time such as for a meal. The script is:

sleep 5
xset dpms force standby

This script works fine with Fedora-KDE and Ubuntu-Gnome.

I just started using Fedora-Gnome. When I run this script under Fedora-Gnome, the monitor goes into standby for about two minutes and then turns back on. Why is the monitor coming back on under Fedora-Gnome?  The monitor does the same thing if I issue the xset dpms force standby from a terminal.

Also, if I use the menu option to exit Fedora-Gnome, and I select "suspend", the system ignores my request.

My Fedora-Gnome AC power management display preference is set for suspend after 20 minutes. The screensaver preference is set for 20 minutes.

Following is some info about my Fedora install:

[aweiner@localhost Documents]$ lshal | grep can_suspend
  power_management.can_suspend = false  (bool)
  power_management.can_suspend_hybrid = false  (bool)
  power_management.can_suspend_to_disk = true  (bool)
  power_management.can_suspend_to_ram = false  (bool)

Kernel: 2.6.29.6-213.fc11.i686.PAE

gnome-power-manager-2.26.3-1.fc11.i586

hal-0.5.12-26.20090226git.fc11.i586

dbus-1.2.12-2.fc11.i586

My PC is a Dell Dimension 4100 (nine years old).

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[Richard Hughes-6]

On 30/07/2009, Allen Weiner <alweiner7@...> wrote:
> My multiboot desktop PC runs Fedora 11 and Ubuntu 9.04. The PC has an LCD
> monitor and a GeForce 6200 graphics card. On both Fedora and Ubuntu I use
> the proprietary nvidia driver provided by the distro.

The proprietary drivers are not provided by Fedora, and really, they
are unsupported.

> I just started using Fedora-Gnome. When I run this script under
> Fedora-Gnome, the monitor goes into standby for about two minutes and then
> turns back on. Why is the monitor coming back on under Fedora-Gnome?  The
> monitor does the same thing if I issue the xset dpms force standby from a
> terminal.

I'm not sure. You could try running:

killall gnome-power-manager
gnome-power-manager --verbose

and see if gnome-power-manager causes events when the monitor wakes
up. It could also be an X bug, or even a nvidia bug.

> Also, if I use the menu option to exit Fedora-Gnome, and I select "suspend",
> the system ignores my request.

Sounds like your system doesn't support suspend. Arguably, it's also a
bug where the suspend menu item is displayed in this case.

> [aweiner@localhost Documents]$ lshal | grep can_suspend
>   power_management.can_suspend = false  (bool)
>   power_management.can_suspend_hybrid = false  (bool)
>   power_management.can_suspend_to_disk = true  (bool)
>   power_management.can_suspend_to_ram = false  (bool)

According to HAL your system doesn't support suspending. What's the
output of "cat /sys/power/state" ?

Richard.
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[Allen Weiner]

Some parts of this message have been removed. Learn more about Nabble's security policy.

> Date: Mon, 28 Sep 2009 09:54:24 +0100
> Subject: Re: [gpm] Problem forcing monitor to standby
> From: hughsient@...
> To: alweiner7@...
> CC: gnome-power-manager-list@...
>
> On 30/07/2009, Allen Weiner <alweiner7@...> wrote:
> > My multiboot desktop PC runs Fedora 11 and Ubuntu 9.04. The PC has an LCD
> > monitor and a GeForce 6200 graphics card. On both Fedora and Ubuntu I use
> > the proprietary nvidia driver provided by the distro.
>
> The proprietary drivers are not provided by Fedora, and really, they
> are unsupported.

What I meant by this is I use the nvidia driver from the rpmfusion repository, the standard (unofficial) Fedora repo for proprietary items, as opposed to obtaining the nvidia driver from the nvidia web site.

>
> > I just started using Fedora-Gnome. When I run this script under
> > Fedora-Gnome, the monitor goes into standby for about two minutes and then
> > turns back on. Why is the monitor coming back on under Fedora-Gnome? The
> > monitor does the same thing if I issue the xset dpms force standby from a
> > terminal.
>
> I'm not sure. You could try running:
>
> killall gnome-power-manager
> gnome-power-manager --verbose
>
> and see if gnome-power-manager causes events when the monitor wakes
> up. It could also be an X bug, or even a nvidia bug.
>
> > Also, if I use the menu option to exit Fedora-Gnome, and I select "suspend",
> > the system ignores my request.
>
> Sounds like your system doesn't support suspend. Arguably, it's also a
> bug where the suspend menu item is displayed in this case.
>
> > [aweiner@localhost Documents]$ lshal | grep can_suspend
> > power_management.can_suspend = false (bool)
> > power_management.can_suspend_hybrid = false (bool)
> > power_management.can_suspend_to_disk = true (bool)
> > power_management.can_suspend_to_ram = false (bool)
>
> According to HAL your system doesn't support suspending. What's the
> output of "cat /sys/power/state" ?

[aweiner@localhost Documents]$ cat /sys/power/state
standby disk

>
> Richard.

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