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Thread: Black screen after a huge update to Plasma 5.10 and libQt 5.9

  1. #21
    Join Date
    Jun 2017
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    29

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by Ralph82 View Post
    In my case, sddm-greeter still crashes.
    I need to use another desktop manager, for example, kdm or lightdm; then I can launch Plasma 5 Workspace, bypassing sddm-greeter.
    In rare circumstances, I can see some graphic artifact in the fonts.

    So, this bug is not completely fixed yet.
    This isn't a fix; it's a workaround. And an ugly one too.

    sddm hasn't been crashing for me (it didn't before I turned off subpixel hinting, either; it was the plasma stuff that did), so perhaps there's another, unrelated bug.

    -Robert Krawitz

  2. #22

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    > So, this bug is not completely fixed yet.

    Is there a bug report filed on this? With attached ".xsession-errors" ?

  3. #23

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    It seems that after last update everything works again (without switching off subpixel rendering). Let's knock on wood!

  4. #24

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by MenakVishap View Post
    It seems that after last update everything works again (without switching off subpixel rendering).
    I can confirm that after last big update (over 370 packages), openSUSE Leap 42.2 now is working properly, also with subpixel hinting enabled, and sddm-greeter is not crashing anymore!

    Quote Originally Posted by MenakVishap View Post
    Let's knock on wood!
    I agree ...

  5. #25
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    Jun 2017
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    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by Ralph82 View Post
    I can confirm that after last big update (over 370 packages), openSUSE Leap 42.2 now is working properly, also with subpixel hinting enabled, and sddm-greeter is not crashing anymore!


    I agree ...
    Didn't do it for me, unfortunately. plasmashell still crashed.

  6. #26
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    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by rlk View Post
    Didn't do it for me, unfortunately. plasmashell still crashed.
    There's something else squirrely going on with fonts. If I enable subpixel hinting, then plasmashell crashes (I'm downloading the debuginfo for plasmashell now). However, fonts in other apps -- including non-QT apps -- don't look right either.

    I'm using Liberation Sans as my default font. More digging..

  7. #27

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by rlk View Post
    Didn't do it for me, unfortunately. plasmashell still crashed.
    Are you using an alternative repo for font rendering?
    In that case, you need to go back to the original libfreetype6/fontconfig versions (from OSS/Update repos).

    Moreover, as written before by wolfi323, you should do a full switch to the official Plasma5 repos for your openSUSE version.


    I have updated from a virtual terminal, as root:

    init 3
    zypper refresh
    zypper list-updates
    zypper update
    reboot

    After these huge updates, it is very important to restart your computer.

  8. #28
    Join Date
    Jun 2017
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    29

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by Ralph82 View Post
    Are you using an alternative repo for font rendering?
    In that case, you need to go back to the original libfreetype6/fontconfig versions (from OSS/Update repos).

    Moreover, as written before by wolfi323, you should do a full switch to the official Plasma5 repos for your openSUSE version.


    I have updated from a virtual terminal, as root:

    init 3
    zypper refresh
    zypper list-updates
    zypper update
    reboot

    After these huge updates, it is very important to restart your computer.
    I'm using the stock fontconfig and freetype bits from the openSUSE repo, and all of the KDE5 repos (that I know of, at any rate: Frameworks5, QT5, Extra, and Applications).

    I'm using the Xorg repo too; I tried switching back to the stock openSUSE bits (based on the 1.16 server) by disabling that repo and zypper dup'ing it, but that didn't change anything.

    Rebooting also had no effect.

    Changing fonts -- the _act_ of changing fonts, and changing back -- in my browser did help my browser, but nothing else.

    But that gives me an idea...

  9. #29
    Join Date
    Nov 2009
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    West Virginia Sector 13
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    15,760

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    You must be absolutely sure you are not mix repo's ie pulling some from an advanced version and some from standard. That is sure to break things. Don't just randomly add repos thing may not be compatible. When using the advanced versions you must do a full vendor change to those repos so all required packages come only from the advanced. Mixing advanced and standard will not work.
    If you need assistance in doing the vendor change show us your repo list

    zypper lr -d

  10. #30
    Join Date
    Jun 2017
    Posts
    29

    Default Re: Black screen after a huge update to Plasma 5.10 and libQt 5.9

    Quote Originally Posted by gogalthorp View Post
    You must be absolutely sure you are not mix repo's ie pulling some from an advanced version and some from standard. That is sure to break things. Don't just randomly add repos thing may not be compatible. When using the advanced versions you must do a full vendor change to those repos so all required packages come only from the advanced. Mixing advanced and standard will not work.
    If you need assistance in doing the vendor change show us your repo list

    zypper lr -d
    The repos I'm using (in addition to openSUSE Leap 42.2 and its updates) are:

    KDE:/Applications/KDE_Frameworks5_openSUSE_Leap_42.2
    KDE:/Qt5
    KDE:/Frameworks5
    KDE:/Extra
    devel:/languages:/python3
    X11:/Enlightenment:/Factory/
    devel:/tools
    devel:/tools:/scm
    devel:/languages:/R:/released
    LibreOffice:/Factory
    X11:/XOrg
    editors
    graphics
    multimedia:/photo
    multimedia:/libs
    multimedia:/color_management
    GNOME:/Apps
    mozilla (using Firefox LTS because I want to be able to use addons of my choice, not just what Mozilla says is good for me)
    Emulators:/Wine
    Packman

    (the zypper lr -u output won't be helpful because I mirror the repos I care about -- I have DSL and updating from remote repos would be...impractical).

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