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Thread: Fonts were okay, now display issues (kernel taint ?)

  1. #1
    Join Date
    Dec 2005
    Xubuntu 20.04 Focal Fossa

    Fonts were okay, now display issues (kernel taint ?)

    Operating System: Kubuntu 20.04
    KDE Plasma Version: 5.18.5
    KDE Frameworks Version: 5.68.0
    Qt Version: 5.12.8
    Kernel Version: 5.4.0-65-generic
    OS Type: 64-bit
    Processors: 4 × Intel® Core™ i7-4510U CPU @ 2.00GHz
    Memory: 7.7 GiB of RAM

    Graphics Processor: GeForce 840M
    NVIDIA Driver Version: 460.32.03
    Laptop screen: 1280 x 720

    Global theme: Kubuntu
    Plasma style: Kubuntu
    Fonts : Noto Sans 12 pt
    GNOME/GTK app style: Adwaita

    Firstly, I must say that for every prior version of Kubuntu, I have NEVER had to change fonts, themes, display properties. It always worked just fine out of the box. But with 20.04, the problems appeared.

    I had to do a lot of research, changing themes, fonts, etc, new themes, addressing problems with GTK based apps, installing Nvidia drivers (which I have never had to do), and it was basically okay up until a few days ago. Then just booted and it was all a mess again, what caused that I have no idea. The fonts are much larger and not much fits into the display now.

    There was a hardware device application update, not sure if that had any bearing ? Why I mention that is because I did have Nvidia 455 driver installed, yet when I did a

    ubuntu-drivers devices
    it recommended 460. So that got installed, no difference though. I even installed "gnome-tweaks" in desparation

    There is only one GTK applications I run, Claws-Mail. That has its own theme, fonts setting, yet even that got totally messed up, huge fonts, a real mess.

    Now, to some questions:

    1. Do I really need to Nvidia driver ? I ask that because I have not had to install it in prior releases.

    2. Is there a method I can use to, the KIS principle would be nice. For instance, why can't I just have a system wide theme, font, colour,etc setting and ALL applications use that ? I say that because I have had to modify Terminal, OpenOffice, Kate, Dolphin,etc,etc, in regards to fonts. That was all basically okay, but now a mess again.

    journalctl -b
    a list at

    inxi -Fzx

    System: Kernel: 5.4.0-65-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: KDE Plasma 5.18.5
    Distro: Ubuntu 20.04.2 LTS (Focal Fossa)
    Machine: Type: Portable System: Dell product: Inspiron 3542 v: N/A serial: <filter>
    Mobo: Dell model: 0WW73H v: A16 serial: <filter> BIOS: Dell v: A16 date: 09/02/2020
    Battery: ID-1: BAT0 charge: 41.0 Wh condition: 41.0/41.4 Wh (99%) model: SMP-SDI2.8 DELL FW1MN31
    status: Full
    CPU: Topology: Dual Core model: Intel Core i7-4510U bits: 64 type: MT MCP arch: Haswell rev: 1
    L2 cache: 4096 KiB
    flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 15962
    Speed: 863 MHz min/max: 800/3100 MHz Core speeds (MHz): 1: 798 2: 798 3: 798 4: 799
    Graphics: Device-1: Intel Haswell-ULT Integrated Graphics vendor: Dell driver: i915 v: kernel bus ID: 00:02.0
    Device-2: NVIDIA GM108M [GeForce 840M] vendor: Dell driver: nvidia v: 460.32.03 bus ID: 08:00.0
    Display: x11 server: X.Org 1.20.9 driver: modesetting,nvidia unloaded: fbdev,nouveau,vesa
    resolution: 1280x720~60Hz
    OpenGL: renderer: GeForce 840M/PCIe/SSE2 v: 4.6.0 NVIDIA 460.32.03 direct render: Yes
    Audio: Device-1: Intel Haswell-ULT HD Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:03.0
    Device-2: Intel 8 Series HD Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1b.0
    Sound Server: ALSA v: k5.4.0-65-generic
    Network: Device-1: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter vendor: Dell driver: ath9k
    v: kernel port: f040 bus ID: 06:00.0
    IF: wlp6s0 state: down mac: <filter>
    Device-2: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell driver: r8169 v: kernel
    port: e000 bus ID: 07:00.0
    IF: enp7s0 state: down mac: <filter>
    Device-3: Qualcomm Atheros type: USB driver: btusb bus ID: 1-1.6:11
    IF-ID-1: usb0 state: unknown speed: N/A duplex: N/A mac: <filter>
    Drives: Local Storage: total: 931.51 GiB used: 247.53 GiB (26.6%)
    ID-1: /dev/sda vendor: Seagate model: ST1000LM024 HN-M101MBB size: 931.51 GiB temp: 31 C
    Partition: ID-1: / size: 16.19 GiB used: 8.58 GiB (53.0%) fs: ext4 dev: /dev/sda1
    ID-2: /home size: 894.99 GiB used: 238.95 GiB (26.7%) fs: ext4 dev: /dev/sda6
    ID-3: swap-1 size: 4.66 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda5
    Sensors: System Temperatures: cpu: 50.0 C mobo: 51.0 C gpu: nvidia temp: 46 C
    Fan Speeds (RPM): cpu: 0
    Info: Processes: 212 Uptime: 4h 35m Memory: 7.68 GiB used: 2.07 GiB (26.9%) Init: systemd runlevel: 5
    Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 inxi: 3.0.38

    Is the "kernel taint" serious ?
    Last edited by oygle; February 24th, 2021 at 01:44 AM. Reason: add o/p from "inxi" command


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