Missing /etc/dconf/db/local "expect degraded performance" & Frequent Temporary Applications Freeze

ARM Technical Assistance
1

Everytime i launch Chromium, Firefox, LibreOffice or Flameshot using Command Line will have this warning:

jfl@jfl-gtkpro    chromium

(chromium:9070): dconf-WARNING **: 14:21:35.309: unable to open file ‘/etc/dconf/db/local’: Failed to open file “/etc/dconf/db/local”: open() failed: No such file or directory; expect degraded performance

Not sure whether Chromium temporary freeze for a few seconds once in while is related to above warning.

How to go about to rectify the missing “/etc/dconf/db/llocal”? I am on Manjaro-Arm-Gnome linux-aml-6.1.39-1.

2

It is just a warning… don’t want to see it? Run this:

sudo touch /etc/dconf/db/local

Now the file exists and chromium will not be angry.

On ArchLinux based systems, /etc/dconf/db/local.d/ is used for the configs. Guess it looks there because debian based system have a file there.

3

Thanks for the tips and work around.

Is there a way to force Manjaro-Arm-Gnome to generate the “/etc/dconf/db/local”? The expected “local” file/configuration? Is it necessary? The “expect degraded performance” seems to correlate with Chromium “freeze” for a few seconds now and then.

4

It is the database for GTK, therefore Gnome Apps. This file is just not used.

Hard to believe. Chromium just use the GTK window decoration.

Correlation does not equal causation. :slight_smile:

5

Hi @megavolt,

So “/etc/dcong/db/local” is not a configuration file required by “Chromium, Firefox, Flameshot, or LibreOffice” as when I launch these applications with command line on terminal, the “warning” pop-up.

It this is not the cause for Chromium to temporarily freeze for a few seconds once in a while (actually frequent enough), then I am loss what is causing Chromium to temporarily freeze.

Edit: Does “sudo dconf update” help to regenerate “/etc/dconf/db/local” read it on Ask Ubuntu? Is it safe to run “sudo dconf update”, not sure what this command does.

Edit 1: The “unable to open flie /etc/dconf/db/local” warning seems to be will any application launch using command line on terminal.

I noticed temporary freeze applies to all applications, Chromium, Firefox, File-Manager (Nautilus), Gedit, LibreOffice" – sometimes the message pop-up “chromium is not responding…” or “gedit is not responding…” and at other times NO message up. The temporary freeze could be as long as 10 seconds at times where there CPU load is low.

Like you pointed out, it might not be related to missing “/etc/dconf/db/local”.

Edit 2: Performed “sudo touch /etc/dconf/db/local” the warning still persist (for example):

jfl@jfl-gtkpro    sudo touch /etc/dconf/db/local
[sudo] password for jfl:
jfl@jfl-gtkpro    gedit

(gedit:46689): dconf-WARNING **: 01:10:16.790: unable to open file ‘/etc/dconf/db/local’: /etc/dconf/db/local: invalid gvdb header; expect degraded performance

6

The error might be produced as a message that has nothing to do with the existence of the file, or there is something else wrong. This seems like a xy problem. Providing some system info could help other users to help you beter.

7

The warning “unable to open file ‘/etc/dconf/db/local’: /etc/dconf/db/local: invalid gvdb header; expect degraded performance” whenever I launch an app via command line might not be related to the frequent temporary application freeze eventhough the CPU load is low or basically idling.

 jfl@jfl-gtkpro    inxi
CPU: quad core (2-mt/2-st) ARMv8 v8l (-MST AMCP-)
speed/min/max: 1936/1000/1992:1908 MHz
Kernel: 6.1.39-1-MANJARO-ARM-AML aarch64 Up: 9m Mem: 1.4/3.69 GiB (38.1%)
Storage: 416.71 GiB (2.2% used) Procs: 250 Shell: Bash inxi: 3.3.28
 jfl@jfl-gtkpro    inxi -zav7
System:
  Kernel: 6.1.39-1-MANJARO-ARM-AML arch: aarch64 bits: 64 compiler: gcc
    v: 12.1.0 parameters: root=PARTUUID=78f906b3-02 rootflags=data=writeback rw
    no_console_suspend consoleblank=0 fsck.fix=yes fsck.repair=yes
    net.ifnames=0 audit=0 quiet splash plymouth.ignore-serial-consoles
    console=tty0
  Desktop: GNOME v: 44.3 tk: GTK v: 3.24.38 wm: gnome-shell dm: GDM v: 44.1
    Distro: Manjaro ARM base: Arch Linux
Machine:
  Type: ARM System: Beelink GT-King Pro details: N/A
Battery:
  Device-1: hidpp_battery_0 model: Logitech Bluetooth Laser Travel Mouse
    serial: <filter> charge: 55% (should be ignored) rechargeable: yes
    status: discharging
Memory:
  System RAM: total: N/A available: 3.69 GiB used: 1.54 GiB (41.7%)
  RAM Report: missing: Required tool dmidecode not installed. Check
    --recommends
CPU:
  Info: model: ARMv8 v8l variant-1: cortex-a53 variant-2: cortex-a73 bits: 64
    type: MST AMCP arch: v8l family: 8 model-id: 0 stepping: 4
  Topology: cpus: 1x cores: 4 mt: 2 tpc: 2 st: 2 threads: 6
    smt: <unsupported> cache: N/A
  Speed (MHz): avg: 1936 high: 1992 min/max: 1000/1992:1908 scaling:
    driver: cpufreq-dt governor: performance cores: 1: 1992 2: 1992 3: 1908
    4: 1908 5: 1908 6: 1908 bogomips: N/A
  Features: aes asimd cpuid crc32 evtstrm fp pmull sha1 sha2
  Vulnerabilities:
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: retbleed status: Not affected
  Type: spec_store_bypass status: Vulnerable
  Type: spectre_v1 mitigation: __user pointer sanitization
  Type: spectre_v2 status: Vulnerable
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: meson-g12a-vpu driver: meson_drm v: kernel bus-ID: N/A
    chip-ID: amlogic:ff900000 class-ID: vpu
  Device-2: meson-g12a-mali driver: panfrost v: kernel bus-ID: N/A
    chip-ID: amlogic:ffe40000 class-ID: gpu
  Device-3: meson-g12a-dw-hdmi driver: meson_dw_hdmi v: kernel bus-ID: N/A
    chip-ID: amlogic:ff600000 class-ID: hdmi-tx
  Display: wayland server: X.org v: 1.21.1.8 with: Xwayland v: 23.1.2
    compositor: gnome-shell driver: gpu: meson-drm display-ID: 0
  Monitor-1: HDMI-A-1 model: Philips PHL 241V8 serial: <filter> built: 2020
    res: 1920x1080 dpi: 93 gamma: 1.2 size: 527x296mm (20.75x11.65")
    diag: 604mm (23.8") ratio: 16:9 modes: max: 1920x1080 min: 640x480
  API: OpenGL v: 3.1 Mesa 23.1.3 renderer: Mali-G52 (Panfrost)
    direct-render: Yes
Audio:
  Device-1: meson-g12a-dw-hdmi driver: meson_dw_hdmi v: kernel bus-ID: N/A
    chip-ID: amlogic:ff600000 class-ID: hdmi-tx
  Device-2: axg-sound-card driver: axg_sound_card bus-ID: N/A
    chip-ID: amlogic:sound class-ID: sound
  API: ALSA v: k6.1.39-1-MANJARO-ARM-AML status: kernel-api
    tools: alsactl,alsamixer,amixer
  Server-1: PipeWire v: 0.3.74 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: meson-g12a-dwmac driver: meson8b_dwmac v: N/A port: N/A
    bus-ID: N/A chip-ID: amlogic:ff3f0000 class-ID: ethernet
  IF: eth0 state: down mac: <filter>
  Device-2: pwm-clock driver: pwm_clock v: N/A port: N/A bus-ID: N/A
    chip-ID: pwm-clock:wifi32k class-ID: wifi32k
  IF-ID-1: wlan0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
Bluetooth:
  Device-1: meson-gx-uart driver: meson_uart bus-ID: N/A
    chip-ID: amlogic:ffd24000 class-ID: serial
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 416.71 GiB used: 9.36 GiB (2.2%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/mmcblk2 maj-min: 179:0 vendor: Generic model: SLD64G
    size: 57.62 GiB block-size: physical: 512 B logical: 512 B tech: SSD
    serial: <filter> fw-rev: 0x8
  ID-2: /dev/sda maj-min: 8:0 vendor: SanDisk model: USB 3.2Gen1
    size: 57.3 GiB block-size: physical: 512 B logical: 512 B type: USB rev: 3.2
    spd: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1 tech: N/A serial: <filter>
    fw-rev: 1.00 scheme: MBR
  ID-3: /dev/sdb maj-min: 8:16 vendor: Generic model: USB Flash Disk
    size: 3.7 GiB block-size: physical: 512 B logical: 512 B type: USB rev: 2.0
    spd: 480 Mb/s lanes: 1 mode: 2.0 tech: SSD serial: <filter> fw-rev: 8.07
    scheme: MBR
  ID-4: /dev/sdc maj-min: 8:32 vendor: Western Digital
    model: WD3200BEVT-00ZCT0 size: 298.09 GiB block-size: physical: 512 B
    logical: 512 B type: USB rev: 2.0 spd: 480 Mb/s lanes: 1 mode: 2.0
    tech: HDD rpm: 5400 serial: <filter> fw-rev: 1.75 scheme: MBR
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 56.83 GiB size: 55.86 GiB (98.30%) used: 9.17 GiB (16.4%)
    fs: ext4 dev: /dev/sda2 maj-min: 8:2 label: ROOT_MNJRO
    uuid: 0dd14dd8-5833-4d38-b7c0-f61c4c941050
  ID-2: /boot raw-size: 457.8 MiB size: 457.5 MiB (99.94%)
    used: 74.3 MiB (16.2%) fs: vfat dev: /dev/sda1 maj-min: 8:1
    label: BOOT_MNJRO uuid: 13AB-ABDE
  ID-3: /run/media/jfl/MULTI_BOOT raw-size: 398 MiB size: 397.8 MiB (99.94%)
    used: 117.1 MiB (29.4%) fs: vfat dev: /dev/sdb1 maj-min: 8:17
    label: MULTI_BOOT uuid: C252-DB36
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 80 (default 100)
  ID-1: swap-1 type: zram size: 5.53 GiB used: 0 KiB (0.0%) priority: 100
    dev: /dev/zram0
Unmounted:
  ID-1: /dev/mmcblk2boot0 maj-min: 179:32 size: 4 MiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-2: /dev/mmcblk2boot1 maj-min: 179:64 size: 4 MiB
    fs: <superuser required> label: N/A uuid: N/A
  ID-3: /dev/sdc1 maj-min: 8:33 size: 298.09 GiB fs: ntfs label: Elements
    uuid: B6284057284018AF
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-2: 1-1:2 info: Realtek RTS5411 Hub ports: 4 rev: 2.1
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 0bda:5411
    class-ID: 0900
  Hub-3: 1-1.1:3 info: Genesys Logic Hub ports: 4 rev: 2.1
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 05e3:0610 class-ID: 0900
  Device-1: 1-1.1.1:4 info: PCPlay Barcode PCP-BCG4209 type: keyboard,mouse
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1
    speed: 1.5 Mb/s (183 KiB/s) lanes: 1 mode: 1.0 power: 400mA
    chip-ID: 13ba:0018 class-ID: 0301
  Device-2: 1-1.1.3:5 info: Power Quotient Traveling Disk U273 (4GB)
    type: mass storage driver: usb-storage interfaces: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 3538:0901 class-ID: 0806 serial: <filter>
  Device-3: 1-1.1.4:6 info: Western Digital Elements Portable (WDBAAR)
    type: mass storage driver: usb-storage interfaces: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 2mA
    chip-ID: 1058:1010 class-ID: 0806 serial: <filter>
  Hub-4: 2-0:1 info: super-speed hub ports: 1 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
    class-ID: 0900
  Hub-5: 2-1:2 info: Realtek Hub ports: 4 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 0bda:0411
    class-ID: 0900
  Hub-6: 2-1.1:3 info: Genesys Logic Hub ports: 4 rev: 3.1
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 05e3:0626
    class-ID: 0900
  Device-1: 2-1.3:4 info: SanDisk 3.2Gen1 type: mass storage
    driver: usb-storage interfaces: 1 rev: 3.2 speed: 5 Gb/s (596.0 MiB/s)
    lanes: 1 mode: 3.2 gen-1x1 power: 896mA chip-ID: 0781:55a3 class-ID: 0806
    serial: <filter>
Sensors:
  System Temperatures: cpu: 58.9 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 248 Uptime: 14m Init: systemd v: 253 default: graphical
  tool: systemctl Compilers: gcc: 12.1.0 Packages: pm: pacman pkgs: 942
  libs: 280 tools: gnome-software,pamac,yay Shell: Bash v: 5.1.16
  running-in: gnome-terminal inxi: 3.3.28
 jfl@jfl-gtkpro   

Update: Intestingly,today, 3 hours uptime on Manjaro-Arm-Gnome-linux-aml-6.1.39-1, have not encountered any temporary freeze on Chromium, File-Manager, Gedit or Terminal.

Edit-Update 1: Suspect the applications (Chromium, Gedit, File-Manager, etc) temporary freeze might be related to (caused by) how the Manjaro-Arm-Gnome is being boot up. The application temporary freeze that occured the last few instances seem to happen when Manjaro-Arm-Gnome is booted from USB OTG Port and at times it fails to boot from this USB OTG Port. Possible poor contact issue between the OTG Port and this particular USB flash drive.

No clue what causes the “unable to open file ‘/etc/dconf/db/local’: /etc/dconf/db/local: invalid gvdb header; expect degraded performance” warning though.