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Thread: 11.4 power handling issues

  1. #1

    Default 11.4 power handling issues

    I've run up against the issue of the 2.6.37 kernel on my 6-core workstation where it can't fully shut-down, but the system halts safely, so I can just force a power-down and it seems to be ok. My issue now is that if I leave my computer alone for more than 20 minutes or so, it slips into some kind of lower-power state. This causes my computer to crash (or it just won't wake up, whichever). I'd like to just turn all of the power saving features off - all of them. I've turned off all of the simple ones I could find through YaST, but it still turns the display off after 20 or so minutes and then if I leave it long enough, it slips into a deeper sleep that makes it crash.

    Where else should I be looking to turn off every power saving feature possible? (I have other reasons for wanting to do this, but primarily I want to work around this crash issue without updating to 2.6.38 or newer kernels)

  2. #2
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    Smile Re: 11.4 power handling issues

    VolumetricSteve
    I've run up against the issue of the 2.6.37 kernel on my 6-core workstation where it can't fully shut-down, but the system halts safely, so I can just force a power-down and it seems to be ok. My issue now is that if I leave my computer alone for more than 20 minutes or so, it slips into some kind of lower-power state. This causes my computer to crash (or it just won't wake up, whichever). I'd like to just turn all of the power saving features off - all of them. I've turned off all of the simple ones I could find through YaST, but it still turns the display off after 20 or so minutes and then if I leave it long enough, it slips into a deeper sleep that makes it crash.

    Where else should I be looking to turn off every power saving feature possible? (I have other reasons for wanting to do this, but primarily I want to work around this crash issue without updating to 2.6.38 or newer kernels)
    So you have installed the package called yast2-power-management which controls CPU speed, correct? (when run you go to YaST / System / Power Management) then if you use KDE, as you did not say, your only other selections are menu / Personnel Settings / Hardware / Power Management from where screen blanking can be set or menu / Personnel Settings / Hardware / Display and Monitor / Screen Saver.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

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  3. #3

    Default Re: 11.4 power handling issues

    I am using KDE, as it turns out, I had a screensaver enabled...but nothing was chosen, so when it would open..whatever it thought it was loading, the screen would go black. This normally wasn't an issue though because I'd move the mouse and the system would snap right back. I went through all of my power management and power saving settings and...as far as I know, the system is set to run at full-blast at all times. However, if I let it sit for a long time, the screen goes black, and no amount of mouse moving or keyboard tapping wakes it up - the weird thing is, within a certain time frame, I can still VNC into the machine with no problems at all, I just can't wake up the machine locally. Now, if i let the machine sit....for about a day, it'll get to a point where the machine no longer tries to get an IP address from the DHCP, so I can't even VNC into it at that point, and while it's still on, and probably running, I have no way of communicating with it.

  4. #4
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    Default Re: 11.4 power handling issues

    I can tell you, I have found the power management in kde to flaky - And I currently use Gnome even though I favour kde. I can happily use my kde apps in gnome
    Tumbleweed_KDE
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  5. #5
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    Smile Re: 11.4 power handling issues

    So I suggest you run this command at the terminal prompt:
    Code:
    xset q
    This will give you a bunch of code, but you are looking for something that says:

    Code:
    Screen Saver:
      prefer blanking:  yes    allow exposures:  yes
      timeout:  0    cycle:  600
    If it does, run the following terminal command:

    Code:
    xset s noblank -dpms
    Now, when you run the xset q terminal command, you might expect to see this:

    Code:
    Screen Saver:
      prefer blanking:  no    allow exposures:  yes
      timeout:  0    cycle:  600
    If this helps in any way, you can create a bash script file I called ssreset like the following:

    Code:
    #!/bin/bash
    
    #: Title       : /home/james/bin/ssreset
    #: Date Created: Fri Feb 4 20:43:00 CST 2011
    #: Last Edit   : Fri Feb 4 20:43:00 CST 2011
    #: Author      : J. McDaniel
    #: Version     : 1.00
    #: Description : 
    #: Options     : 
    
    xset s noblank -dpms
    
    exit 0
    # End Of Script
    You must mark the script file as being executable to run (ie chmod +x ssreset). If you use KDE you can put this script file in the ~/.kde4/Autostart folder and it will run on startup each time you log into openSUSE. I got this information from deano_ferrari when I had the same issue using openSUSE 11.4 M6.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  6. #6
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    Default Re: 11.4 power handling issues

    Quote Originally Posted by caf4926 View Post
    I can tell you, I have found the power management in kde to flaky - And I currently use Gnome even though I favour kde. I can happily use my kde apps in gnome
    Same here, although I haven't [yet] migrated to Gnome. KDE's (4.6.0) display power management (dim and/or screensaver) certainly screws up the latest Flash (full-screen only) here, whereas Gnome doesn't.

  7. #7

    Default Re: 11.4 power handling issues

    I have a similar problem. When I 1st installed 11.4 +KDE a few days ago the screen blanked briefly a few times while I was using the machine. This stopped all on it's own for a day or so. This morning and now the screen blanks roughly every 30 secs. Tried mentioned solutions on here eg setting 1hr on the screen savers etc and just tried the X settings as above. The x settings did change but screen is still doing the same thing. It's also using a low res display in KDE. Have tried an update install allowing it to update everything it wanted to an no joy. KDE seems to think that the resolution is 1024 x 768. Looks like vga to me.

    I also disabled the power save. 1st thing I did after installing.

    HELP

    John

  8. #8
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    Default Re: 11.4 power handling issues

    On 04/11/2011 04:36 PM, ajohnw wrote:
    >
    > screen blanks roughly every 30 secs. . . KDE
    > seems to think that the resolution is 1024 x 768.


    i suppose yours is not an issue with:
    -power handling
    -screen saver setting
    -64 bit hardware or software

    instead, i think it is a graphics issue...so, no reason to post again
    into this totally different problem thread, instead begin your own...in
    the install-boot-log in forum....or just walk yourself through these

    http://tinyurl.com/37v9y7m
    http://en.opensuse.org/SDB:Configuring_graphics_cards

    and, holler (in your own, new thread with a descriptive subject line, in
    the correct forum) if you have trouble understanding..

    --
    CAVEAT: http://is.gd/bpoMD
    [NNTP via openSUSE 11.3 + KDE4.5.5 + Thunderbird3.1.8]
    Maybe the developers are not here because they are so busy fixing these>
    http://tinyurl.com/392jnb

  9. #9
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    Default Re: 11.4 power handling issues

    I have generally found these powersave/logon/suspend issues to be involved with the screen saver and power management.

    My only experience is with Gnome, but I've found that in these circumstances you want to start by setting all screen saver and power management options to NEVER. Never sleep, never blank the screen, never suspend, never everything.

    The other thing I'd like to say is that when you are unable to arouse a machine by other means, try Putty. It's a TELNET sort of program that lets you log into a command line window on another machine by entering the remote machine's network address. If you can first control a remote machine with Putty and then later not, usually at that later time there's no hope of connecting to the remote machine. IMHO that is.

    Good luck.

    Also, BTW, the suggestion already raised, to investigate xset is a good one. I'm not expert in this, but it seems that Kde and Gnome and other GUIs are running within or on top of Xserver. Both the GUI and Xserver seem to share a lot of settings and sometimes it's hard to tell which protocol has control.

  10. #10

    Default Re: 11.4 power handling issues

    I have had the same issue since I installed 11.4. 11.2 worked fine. My system is dual boot. OpenSuse 11.4 & Windows XP. The machine boots fine. I run Gnome as my desktop. The Gnome screen saver is 2.30.2-13.14.1. That is what is causing the computer to go into some kind of permanent sleep mode. I have tried removing the screen saver but then I don't have one. I have also found that hitting shutdown then suspend or hibernate will put it to sleep. When I come back, I press the power button and it wakes up. I was thinking about reinstalling 11.4 only with KDE as the desktop, but I don't think it will work, so why bother.

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