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Thread: screen not recovering

  1. #1

    Default screen not recovering

    Lately my screen has seemed to go out on me a number of times--mostly, I think, after the computer has been sitting and has locked and dimmed. When I come back and use the mouse/touchpad to get to the login screen, it does not respond. That is, the computer responds but not the screen--I can see the login screen very, very dimly. But it won't brighten to a usable level. Most recently, it darkened as I was starting to type in my login password.

    If I power down the machine and reboot, the screen comes up fine, so I think it's a software rather than hardware problem. Any ideas about how I might troubleshoot/fix this?

    Running openSUSE 11.2 on lenove 3000 N100. All software is updated.

    Thanks.

  2. #2
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    Default Re: screen not recovering

    On 2010-11-29 14:36, SuseNeo wrote:

    > Any ideas about how
    > I might troubleshoot/fix this?


    The screen saver might be one that doesn't work well on your machine. Don't
    let it choose a random one, or disable it.


    --
    Cheers / Saludos,

    Carlos E. R.
    (from 11.2 x86_64 "Emerald" at Telcontar)

  3. #3

    Default Re: screen not recovering

    I don't have a screensaver. The system just dims down and locks the screen after it sits for a while. It's only recently that the problem has come up. Normally a jiggle of the mouse or touchpad brings up the logon screen and everything works fine. Now, seemingly at random, the screen doesn't brighten properly.

  4. #4
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    Default Re: screen not recovering

    check all your power management/savings settings....

    --
    DenverD
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

  5. #5
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    Default Re: screen not recovering

    Look in powermanagement. The system suspends and does not get back from suspend properly. This can be driver related.
    In Systemsettings - Powermanagement, take a look at what actions are taken after how long. Tell it not to lock the screen
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  6. #6
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    Default Re: screen not recovering

    On 2010-11-29 16:06, SuseNeo wrote:
    >
    > I don't have a screensaver. The system just dims down and locks the
    > screen after it sits for a while. It's only recently that the problem
    > has come up. Normally a jiggle of the mouse or touchpad brings up the
    > logon screen and everything works fine. Now, seemingly at random, the
    > screen doesn't brighten properly.


    Well, /that/ is a screen saver :-p

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 11.2 x86_64 "Emerald" at Telcontar)

  7. #7
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    Default Re: screen not recovering

    On Mon, 29 Nov 2010 21:50:07 +0530, Carlos E. R.
    <robin_listas@no-mx.forums.opensuse.org> wrote:

    > On 2010-11-29 16:06, SuseNeo wrote:
    >>
    >> I don't have a screensaver. The system just dims down and locks the
    >> screen after it sits for a while. It's only recently that the problem
    >> has come up. Normally a jiggle of the mouse or touchpad brings up the
    >> logon screen and everything works fine. Now, seemingly at random, the
    >> screen doesn't brighten properly.

    >
    > Well, /that/ is a screen saver :-p
    >


    could also be the monitor going into sleep; either by itself, or prompted
    by BIOS or openSUSE power management. as far as i remember, the 'blank'
    screen saver isn't the default. the OP would have to change it, and
    probably remember doing so.

    --
    phani.

  8. #8

    Default Re: screen not recovering

    I thought suspend was something different than "session idle actions."

    I see under "Screensaver" settings that the blank screen is a form of screen saver. If I turn off the commands to start screen saver and lock screen, then if the problem still occurs I've learned something. But if the problem is linked to the idle settings, and it's only happening "randomly", then does it follow that there's some sort of bug in the Gnome Power Management system?

  9. #9

    Default Re: screen not recovering

    Curiouser and curiouser.

    After turning off all the "idle" settings:

    I hibernated the box this afternoon.
    This evening when I tried to start it, it came up dark, but I could very very faintly see the Evolution screen--maybe I had clicked 'Suspend" by mistake rather than 'Hibernate".

    So I powered it down. 3x this result: The Lenovo splash screen would appear very briefly; then dark. Then the Logon screen very briefly and again dark, tho again I could very very faintly see an image.
    Now I'm thinking: this must be hardware-related.

    I tried booting from the openSUSE DVD and it started fine (allowed me to log into my account, which i didn't expect from booting from the disk; I thought that boot would be totally independent of my HDD). After hibernating from that boot it restarted fine. I shut it down, removed the DVD, and rebooted. The first time it came up fine except the Desktop didn't appear, tho the side and bottom panels did. When I shut it down I got a "Nautilus not responding" warning. Once restarted, it's working fine.

    So I'm stymied. I've turned off the power management stuff. The fact that the screen wouldn't brighten on boot makes it seem like a hardware problem. But then the fact that now it's working fine after the round with the DVD boot makes me think software again.

    Any good insights out there?

    Thanks.

  10. #10
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    Default Re: screen not recovering

    SuseNeo wrote:
    > I tried booting from the openSUSE DVD and it started fine (allowed me
    > to log into my account, which i didn't expect from booting from the
    > disk; I thought that boot would be totally independent of my HDD).


    i _think_ by default the openSUSE DVD will "Boot from Hard Disk" the
    first selection on the list...check and see if i'm not right....if i
    am, then how do you explain that everything was fine when it booted
    from the hard disk via the DVD, but not when booting from the hard
    disk without the DVD ??

    i THINK the difference is what is delivered as kernel boot parameters
    from YOUR hard drive's /boot/grub/menu.lst vs those from the DVD..

    and, i guess the one on your hard drive is different when it comes to
    like apm, acpi, apic, and maybe there are other which impact power
    management and/or savings..

    you may not like this idea: but the ability to hibernate or suspend is
    a 'relatively' new capability....i guess if you use your machine when
    you need it and shut it down when you don't you won't have this
    problem and it won't cost you a lot extra in shut/start time compared
    to these can't-see/use-it-troubles....(in other words, if hibernate or
    suspend kills the machine, then don't use it...instead, use what works..)

    --
    DenverD
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

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