Black screen after updating the kernel [LTSEnablementStack]

Discussion in 'Newbie Questions' started by AirArt, Jul 20, 2015.

  1. AirArt

    AirArt Thread Starter
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    Hi guys! I've updated the kernel and Enablement Stacks using the commands:
    Code (Text):
    sudo apt-get install --install-recommends linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic
    as described here: https://wiki.ubuntu.com/Kernel/LTSEnablementStack and now I'm getting stuck on black screen right after the elementary os logo. The tty1-tty6 are available, as well as I tried to modify GRUB settings, but no succes yet, still a black screen.
     
  2. paradise

    paradise
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    Hi AirArt, the reason whats going wrong while loading the X Server should be noticed in /var/log/syslog and /var/log/Xorg.0.log, could you try to read the logfiles?
     
  3. AirArt

    AirArt Thread Starter
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    I can read both files, what should i try to find?
     
  4. paradise

    paradise
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    I´ve tried to reproduce this issue and installed the same on a 100% fresh eOS Freys installation in a VMPlayer Instance.

    Code (Text):
    sudo apt-get install --install-recommends linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic
    Unfortunately without success concerning the error, in my vmplayer instance the eOS Freya is still booting clearly.. sorry :/

    - Interesting is every line including an ERROR in the beginning of the line. My hope was, that the last 10-15 lines in syslog is saying anything helpful after booting.
    - Another question, have you installed before some non-standard graphic drivers? Nvidia or AMD from external repository or hand-installation?

    Maybe you won´t spend more time for troubleshooting, you can try to reinstall the default mesa drives as here described http://askubuntu.com/questions/80914/how-reinstall-the-default-graphics-drivers
     
  5. paradise

    paradise
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    i did play a bit more and got it broken with black screen too.
    Definitively the logfile /var/log/Xorg.0.log does display the reason. In my testcase it cant find module for displaying.

    Code (Text):
    [  2344.466] (==) Assigned the driver to the xf86ConfigLayout
    [  2344.466] (II) LoadModule: "vmware"
    [  2344.466] (WW) Warning, couldn't open module vmware
    [  2344.466] (II) UnloadModule: "vmware"
    [  2344.466] (II) Unloading vmware
    [  2344.466] (EE) Failed to load module "vmware" (module does not exist, 0)
    [  2344.467] (II) LoadModule: "modesetting"
    [  2344.467] (WW) Warning, couldn't open module modesetting
    [  2344.467] (II) UnloadModule: "modesetting"
    [  2344.467] (II) Unloading modesetting
    [  2344.467] (EE) Failed to load module "modesetting" (module does not exist, 0)
    [  2344.467] (II) LoadModule: "fbdev"
    [  2344.468] (WW) Warning, couldn't open module fbdev
    [  2344.468] (II) UnloadModule: "fbdev"
    [  2344.468] (II) Unloading fbdev
    [  2344.468] (EE) Failed to load module "fbdev" (module does not exist, 0)
    [  2344.468] (II) LoadModule: "vesa"
    [  2344.469] (WW) Warning, couldn't open module vesa
    [  2344.469] (II) UnloadModule: "vesa"
    [  2344.469] (II) Unloading vesa
    [  2344.469] (EE) Failed to load module "vesa" (module does not exist, 0)
    [  2344.469] (EE) No drivers available.
    [  2344.469] (EE)
    Fatal server error:
    [  2344.469] (EE) no screens found(EE)
    [  2344.469] (EE)
    Please consult the The X.Org Foundation support
    at http://wiki.x.org
    for help.
    [  2344.469] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
    [  2344.469] (EE)
    Quick solution is to install the "old" package, for example for modesetting, instead of the *lts-utopic one:

    Code (Text):

    paradise@lilipupu:~$   sudo apt-get install xserver-xorg-video-modesetting-lts-utopic
    Reading package lists... Done
    Building dependency tree    
    Reading state information... Done
    Some packages could not be installed. This may mean that you have
    requested an impossible situation or if you are using the unstable
    distribution that some required packages have not yet been created
    or been moved out of Incoming.
    The following information may help to resolve the situation:

    The following packages have unmet dependencies:
    xserver-xorg-video-modesetting-lts-utopic : Depends: xorg-video-abi-18
                                                 Depends: xserver-xorg-core-lts-utopic (>= 2:1.15.99.903) but it is not going to be installed
    E: Unable to correct problems, you have held broken packages.
    In this case you can install the general package this way:

    Code (Text):
    sudo apt-get install xserver-xorg-video-modesetting
    And reboot. Is it better now?
     

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