General :: Monitor Power And Lock Screen - Ubuntu Lucid
Oct 7, 2010
I'm trying to get my screen to turn off whenever I lock my screen. I know that in Power Management, there's an option to turn off the screen after a set amount of time, and I know about xset dpms force off, but the former doesn't allow me to turn off the screen from the logout menu, and the latter only turns the screen off for a short amount of time (1 minute or so. The screen just turns back on by itself).
Is there a script I can modify to change what happens when "Lock screen" from the logout menu is selected, or is there a script I can add to the panel to lock the screen and then turn the monitor off (and turning it back on when I shake the mouse or something)?
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Sep 14, 2009
I am a brand new user coming from the MS environment. My impression of openSUSE is that it is like moving into a new house that is well built but the rooms are full of half-constructed self-assembly furniture and appliances without any specific instructions. Nor is it clear which does what and whether all are needed or not. There is a town hall down the road where fellow homeowners gather to discuss what each has managed to deduce about putting their own furniture together. The town hall has a sort of library where thousands of pieces of paper with instructions are stored in an ad-hoc filing system
My latest problem is that I have created a screensaver via the "Configure Desktop" application and set "Enable display power management" and set some timeouts.However, I seem to be asked for a password to unlock the screen when I come back to my computer. I have spent 2 hours trying to find the place where I can disable screen password locking but to no avail. I am perplexed and frustrated at how such an obvious function is so ****ed hard to configure. This is the impression I am getting of Linux in general - it is novice user-hostile and badly organised.
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May 9, 2010
i have this problem i cant find how to remove the automatic lock when i left my laptop open i want to change it for 2 hours or remove it all.
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Aug 8, 2010
im installing ubuntu onto a friends ibook, but am first running it live off the disk. it runs well, except for one thing, the display has a problem,i guess it seems like its tiled on the monitor, instead of fullscreen, it has a full desktop taking about 2/3 of the monitor, a sliver of the same desktop right below it, and a line of black to the right.
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May 6, 2010
I'm on HP tx2000 Tablet PC, with nVidia GeForce 6150 Go onboard, 4GB of RAM, Ubuntu 10.04 amd64 Desktop. I keep getting a blank screen after boot splash when I'm on BATTERY POWER. Though I get a blank screen, the screen comes alive when I SUSPEND the laptop by closing the lid, and then RESUME the laptop. Then I can see the logon box and whole desktop.
Usually people get problem by suspending their laptops (usually the screen not coming back after resuming), but now I SOLVE the problem by suspending my laptop. Well like I said I can somehow get the screen right, but I really can't (and don't want to) suspend and resume my laptop every time I boot. Problem occurs REGARDLESS of type of display driver I use. nVidia proprietary, nouveau... whichever driver I use, I get the same conclusion.
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Apr 5, 2010
When i log in as root, and try to click the lock screen button, lock screen doesnt work? Is it disabled by default?is there anyway to lock screen when logged in as root
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May 5, 2010
I cannot install Ubuntu 10.04, or even boot into the live CD. I'm not an expert, but I've used Ubuntu for several years, and I'm pretty sure I'm not doing anything stupid... Here's what happens when I boot with the Ubuntu 10.04 live CD: I get a purple screen with just an accessibility(?) symbol at the bottom (this lasts 15 seconds). The screen goes black, with a flashing cursor, then changes back to purple, this time with an Ubuntu logo, with 5 dots acting as a progress indicator (this lasts about 1 minute). The screen switches to standby. The CD drive continues to make noises for another minute or so, then stops.
I physically removed my graphics card (ATI Radeon HD 5770), and plugged the monitor straight into the VGA port on the motherboard. Now the CD boots up fine. I could try installing Ubuntu at this point, while my graphics card is unplugged, and then plug my graphics card back in, and see if it starts working then.
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Mar 20, 2010
I am having problems with the refresh rate if the screen. In the refresh mode of the monitor in the monitor options have only one option 60Hz. I have LG 24 + ATI Radon 3870, and have already installed the ATI driver via Ubuntu download center.
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Jan 3, 2010
I have experienced that the button in my main menu "Lock Screen" does nothing, so I can not lock my screen. What could be the problem? Is there any command in terminal what I could write, so I can see is there an error output or something?
I am using Ubuntu 9.10, GNOME.
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Apr 22, 2010
I have a new Lenovo (thinkpad) x100e laptop. I've recently installed the new Ubuntu 10.02 distro and have found the oddest bug. If my power cord is disconnected (i.e. if I'm running off battery power) then the login window locks up. Conversely, if the power cord _is_ connected then things work as usually. (Also, trying to adjust brightness causes a crash --- but I suspect that this is not odd). Where I should put this information.
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Sep 11, 2010
How to temporarily lock CPU speed or stop power management? There is no /etc/init.d/powernowd
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Sep 7, 2011
It's very disturbing when making a Kiosk application, every time the lock screen and screensaver shows up, also many popup + battery or updates shows up. Where and how can I completely disable the lock screen, screen saver and alerts via a configuration file or from the terminal? I have the tried following but nothing works: failed
vim /etc/default/acpi-support
;LOCK_SCREEN=true
failed
$ gconftool-2 --type boolean -s /apps/gnome-power-manager/lock/suspend false
$ gconftool-2 --type boolean -s /apps/gnome-power-manager/lock/blank_screen false
$ gconftool-2 --type boolean -s /apps/gnome-power-manager/lock/hibernate false
[Code]...
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May 13, 2010
In our cluster of RedHat4 & 5 machines, if someone locks the computer and walks away no body can use it. Is there a feature in RedHat5, Gnome, KDE etc that would allow for the option of switching users at the lock screen, so more than one person can be logged in
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Feb 20, 2011
I logged in as root. i want to activate screensaver which required password.
Installation version is RHEL 5 server. I have installed xlockmore-5.28-1.el5.rf.i386.rpm but when i run xlock comand in terminal window, it shows error e.g. libGL warning: 3D driver claims to not support visual 0x5b xlock: symbol lookup error: xlock: undefined symbol: DPMSQueryExtension
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Mar 8, 2011
USB driver bug exposed as "Linux plug&pwn" or this link.Two choices [GNOME, Fedora 14]:
1 - use the gnome-screensaver
2 - use the "switch user" function [gnome menu -> log out -> switch user]
So the question is: which one is the safer method to lock the screen, if a user leaves the pc? Is it true, that using the [2] method is safer?Why do i think this? - The gnome-screensaver is just a "process", it could be killed. But if you use the log out/switch user function, it's "something else". Using the "switch user" function, could there be a problem like with the gnome-screensaver? Could someone "kill a process" and presto...the lock is removed?Could the GDM [??] "login windows process" [e.g.: a picture of it] get killed and the "lock" gets owned?
p.s.: if the [2] method is safer, then how can i put an icon on the GNOME panel, to launch the "switch user" action by 1 click?
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Jul 10, 2011
When I hit Alt+Ctrl+L my system is starting the ScreenSaver but not locking the screen. The keybinding is correctly set. This is happening in only root account but in another user account it works perfect !
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Jun 22, 2010
every time this boots now, I get that message. If I hit cancel, then the screen locks and the mouse moves but nothing happens. The only way to get it show the desktop, is to select 'logout anyway'
Plus the boot takes forever at least 4 times longer than karmic.
all of this is in reference to booting up the PC
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Jan 11, 2011
I've installed lucid on two computers now and have been using or a few months.Overall, it's pretty good and everything just works. However, every now and then (seemingly random), the power button in the indicator appletsion panel widget randomly disappears, so I'm unable to shut down my computer without re-adding the widget, or using the command line to shutdown the computer. Now this is acceptable for me, an advanced user. However, this is not acceptable for my parents and family, who also use ubuntu computers. Today, my mother called me to ask why she couldn't turn off her computer. I was dumbfounded, and had to walk her through turning it off "by hand."
Now this is not me accidentally removing the indicator applet session panel item. No, I can still see the user name bubble with availability information and I can still switch users. It's just that the power button is completely missing (sometimes the place where it used to be is occupied by a corrupt graphic). Additionally, if I login later, the power button magically returns without me having to do anything with regards to the panel. This is disappointing indeed.
Honestly, this is why ubuntu and linux in general still have the reputation they do of being non-user-friendly. At least in windows or mac, when I get fed-up I can turn it off. But not so in ubuntu. No ubuntu tortures me continuously and I marvel that such a simple thing has escaped the minds of such advanced programmers. I wish Canonical would focus on letting us TURN OFF the computer instead of adding crazy features that I'm not going to use. I mean how can a real operating system fail at such a simple task
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Feb 17, 2010
I have recently loaded Ubuntu 9.10 which runs perfectly, except for the power management system.I go into the GUI power management screen and tell it to use the screen-saver after ten minutes, but NEVER suspend/ hibernate but it suspends/hibernates anyway,sometimes after an hour, sometimes hours later.Is it possible to keep the screen-saver but disable the rest of the power management system?
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Apr 29, 2010
Well, this new issue when installing the new lucid relase iso seems to be closly related to my previous bug report refering to suspend and hybernate failing to power off, freezing at and of suspend/hybernate preperation. now what happens... installing ubuntu lucid 64bit, all gos perfect. finally i get the window begging me to reboot. i click reboot. window finsihes its work and disapears. that's it. screen is frozen with its purple background. no ctrl+alt+del, nor anything else works. only reset button. so it failed ro reboot like it fails to pwoer off for hybernate or suspend. on same machine this does not happen with karmic. it is a soley ubuntu lucid problem. any suggestion how to track that down? p.s. in my original thread and bug report i provided a pm-suspend.log that went all good till the last statement "powering off".
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May 1, 2010
While leaving my laptop to install the upgrades, I hadn't noticed how the power cord had slipped loose. When I came back my computer must have shut off due to battery loss. When I booted up my computer again, I couldn't boot up Ubuntu under any of the kernels, -20,-19, etc. I get cryptic messages such as "unable to enumerate USB device on port 2," device not accepting messages," and "device descriptor read." i definitely intend to recover my data. I had been upgrading from 9.10 to the latest version of lucid lynx.
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Mar 16, 2010
Im trying to find out if my computer is whats got my power bill so high. Im not sure it is, but Id like to know if there is a shell command to monitor my power use.
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Aug 8, 2010
I tried to upgrade my kubuntu 8.04 LTS to Ubuntu 10.04 LTS as given here. Actually I wanted to upgrade to kubuntu. The download completed successfully. However,while upgrading the power went off and left the computer in bad state. Now I see multiple two entries for both
kubuntu 8.04.4 LTS, Kernel 2.6.24-28-generic
kubuntu 8.04.4 LTS, Kernel 2.6.24-28-generic (recovery mode)
in grub. Since I am not that familiar with ubuntu(in general linux), I would like
When I tried to boot in first two of these I get the following error message and it remains in command-line mode.
Code:
libudev: udev_monitor_new_from_netlink: error getting socket: Invalid argument
[ 20.839013] wait-for-root[946]: segfault at 00000030 eip b774bf2b esp bfb33340 error 4
Segmentation fault
[Code]....
However, the mount points are not having anything. It is like nothing got mounted. I would suspect there should be some way where I should be able to locate the downloaded upgrade stuff and apply it afresh again from start. Is this something possible?
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Feb 27, 2011
If power fails in the site and generator/UPS has it's last leg of power, how would I know if im away that something's about to go down? Is there a way for me to setup some alert to myself that we have just lost power in the site and everything's running on batteries? Is there a hardware of some sort that I can setup to send sms/call alerts to certain admins?
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Aug 23, 2010
What happens is that I resorted to deleting my .kde directory after my kid destroyed my profile where title bar, menu, konsole get broken. After deleting, I login again thus regenerating the .kde directory. To avoid my kid from messing my desktop, I tried to lock it. It does not lock.
It just need a KDE full restart perhaps since when I login the other day, it now works.
I'm updated to Slackware current for almost a month already and have not played a lot on KDE desktop (busy programming stuff).
However, on day I tried to lock the desktop in KDE to avoid the kid from destroying my cool desktop setting, but it didn't lock. Cool, so I tried screen saver and add an option to lock the screen.
When I test screen saver, it displays. But when I wait for 1 minute(I set it that way), it doesn't fire up. Not even after 15 minutes which I think the default.
It usually work before (several months ago) using the lower version of KDE. It is just last Saturday that I noticed it.
I tried to dig the profile management but I could not find anything relevant there.
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Jul 25, 2010
I want to switch off 3d i.e. dri on my laptop to save power. There is a bug in the intel video driver that makes it generate excess wakeups and thus increase power consumption. I don't use 3d so this is very annoying.
I have tried modifying /etc/X11/xorg.conf to insert an "NODRI" option in the "Device" section and have commented out both of the "load dri" commands in the "Modules" section. No go. When I look in the xorg log, these changes are seen but not acted on. The system appears to have hardwired defaults set somewhere which are difficult to override. It appears to be a new issue because with Karmic one still had control with xorg.conf.
Just generally I don't like changes like this because it is not documented on the wiki where and how to change the defaults in Lucid. Linux was supposed to be easily configurable so IMHO this is a step backwards.
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Feb 4, 2010
All of a sudden today there was no display on my Ubuntu PC. It seems to be powering on - I get the LG screen when the monitor is switched on - but it goes into "Power Saving Mode". How do I diagnose this? I already unplugged and plugged. Monitor is connected to a graphics card - no change when I switched to VGA.
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Feb 23, 2010
I'm playing with dual monitors. I have an NVIDIA GT220 set up so that my monitor and my TV are running as extended desktops. Everything is working well enough, but there is one annoying bit I've noticed:
If I'm watching ..... on monitor 1 in fullscreen and working on monitor 2, clicking anything in monitor 2 kills full-screen in monitor 1. Is this something that can be fixed somehow or is it a hardwired "feature"?
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Aug 7, 2011
I am having problems getting my external monitor to work. When I plug in the monitor, both the laptop screen and the external monitor go black. When I unplug the monitor, the laptop screen works again.
When I startup with the external monitor plugged in, neither screen works or teh computer hangs or something.
I have had the external monitor going on a couple of occasions. I did manage to configure my monitors through System Settings > Display. I turned off the laptop monitor as I just want to use the external. But after rebooting, things didn't work.
I have a Thinkpad E420, Fedora 15
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Nov 24, 2008
I have a few machines set up and running Red Hat 4.1.2-42 in a computer lab. I also have a single test machine running the same version. The machines in the lab work flawlessly.However, when machines are on the login screen, they don't go into power saving mode. That is, after a certain amount of inactivity, the idle login screen should be replaced by a black power saving screen. But this does not happen. The monitor should go into standby (the little green light becomes orange, and the whole screen shuts down until you move your mouse again...you know the drill).I know this is supposed to be the case because this works on the test machine. It just doesn't work in the lab. I think it has something to do with gdm, but I can't for the life of me figure it out.
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