[SOLVED] dnf update, 24 Feb 18 causes very slow system
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  1. #1
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    dnf update, 24 Feb 18 causes very slow system

    up to date F27, nvidia card. Been running fine with rpmfusion updates.
    After updating yesterday, I am seeing a lag of between 5 and 20 seconds from moving mouse / pressing a key
    and a response.
    4.15.4-300 in use now

    https://bugzilla.redhat.com/show_bug.cgi?id=1546439 may relate.

    On boot, I am unable to revert to a previous kernel since the boot cannot be interrupted (due to problem).

    Suggestions please.

    I can (just, if I'm very patient) use a terminal :-)

  2. #2
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    Re: dnf update, 24 Feb 18 causes very slow system

    'Solved' (in one way) by installing and selecting KDE.
    Boot to sign in is still very slow.
    Thereafter (in KDE?) fine.

    A Gnome problem?

  3. #3
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    Re: dnf update, 24 Feb 18 causes very slow system

    GNOME+NVIDIA=problems period. if you want a GTK3 desktop that works properly use Cinnamon DE, especially with those rpmfusion nvidia drivers since they are maintained by the same person

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    Re: dnf update, 24 Feb 18 causes very slow system

    Quote Originally Posted by dpawson
    'Solved' (in one way) by installing and selecting KDE.
    Boot to sign in is still very slow.
    Thereafter (in KDE?) fine.

    A Gnome problem?
    I recently fixed a nvidia modeset issue for Prime (optimus support) which probably also fixed nvidia wayland, gnome tries to use it but falls back to mesa as it doesn't support eglstreams.
    See

    https://rpmfusion.org/Howto/NVIDIA?h...wto%29#Wayland

    The easiest solution is to use another non-wayland DM (get rid of that gdm ****), slick-greeter/lightdm is my prefered DM.


    P.S Don't bother reporting it at rpmfusion as I don't care if gnome is broken, it's their problem if they have broken wayland detection.

    https://bugzilla.rpmfusion.org/show_bug.cgi?id=4709
    Last edited by leigh123linux; 26th February 2018 at 04:49 PM.

  5. #5
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    Re: dnf update, 24 Feb 18 causes very slow system

    [QUOTE=leigh123linux;1803887]I recently fixed a nvidia modeset issue for Prime (optimus support) which probably also fixed nvidia wayland, gnome tries to use it but falls back to mesa as it doesn't support eglstreams.


    The easiest solution is to use another non-wayland DM (get rid of that gdm ****), slick-greeter/lightdm is my prefered DM.

    As per https://gist.github.com/fntlnz/0572761e0a6d7bdda2af ? Is that the one Leigh?
    lightdm
    slick-greet installed via dnf

    How to switch over, gdm to lightdm?
    https://gist.github.com/fntlnz/0572761e0a6d7bdda2af seems comprehensive, but seems to use i3 rather than lightdm.

    TiA
    Last edited by dpawson; 26th February 2018 at 06:25 PM.

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    Re: dnf update, 24 Feb 18 causes very slow system

    [QUOTE=dpawson;1803890]
    Quote Originally Posted by leigh123linux
    I recently fixed a nvidia modeset issue for Prime (optimus support) which probably also fixed nvidia wayland, gnome tries to use it but falls back to mesa as it doesn't support eglstreams.


    The easiest solution is to use another non-wayland DM (get rid of that gdm ****), slick-greeter/lightdm is my prefered DM.

    As per https://gist.github.com/fntlnz/0572761e0a6d7bdda2af ? Is that the one Leigh?
    lightdm
    slick-greet installed via dnf

    How to switch over, gdm to lightdm?
    https://gist.github.com/fntlnz/0572761e0a6d7bdda2af seems comprehensive, but seems to use i3 rather than lightdm.

    TiA
    Try

    Code:
    sudo dnf install slick-greeter
    sudo systemctl disable gdm
    sudo systemctl enable lightdm
    reboot

  7. #7
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    Re: dnf update, 24 Feb 18 causes very slow system

    [QUOTE=leigh123linux;1803896]
    Quote Originally Posted by dpawson

    Try

    Code:
    sudo dnf install slick-greeter
    sudo systemctl disable gdm
    sudo systemctl enable lightdm
    reboot
    Yes - thanks Leigh. Working.
    Where is the DM... (etc, all the other display parts) explained please? Any url?
    I'm unclear how it all glues together.

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    Re: dnf update, 24 Feb 18 causes very slow system

    [QUOTE=dpawson;1803901]
    Quote Originally Posted by leigh123linux

    Yes - thanks Leigh. Working.
    Where is the DM... (etc, all the other display parts) explained please? Any url?
    I'm unclear how it all glues together.
    DM = login manager (i.e gdm and lightdm are display managers).

    Lightdm doesn't support wayland so forces all session including gnome-shell to use Xorg.

    Does that help explain it?

  9. #9
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    Re: dnf update, 24 Feb 18 causes very slow system

    [QUOTE=leigh123linux;1803906]
    Quote Originally Posted by dpawson

    DM = login manager (i.e gdm and lightdm are display managers).

    Lightdm doesn't support wayland so forces all session including gnome-shell to use Xorg.

    Does that help explain it?
    Puts the blame squarely on Wayland.
    I'll read up on that.

    I don't know the difference between the gnome shell and gnome.
    From Wayland reading, it would seem Fedora is moving more and more that way,
    away from xorg?
    Last edited by DaveP; 27th February 2018 at 04:20 PM.

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