Raspberry Pi

 

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This page contains information on problems I had and have with setting up Plasma Mobile on my Raspberry Pi3b+, solutions to them and steps to get it running yourself.

Install instructions

• Install Raspbian on the Raspberry Pi
• Update your firmware with

  sudo rpi-update

• Activate your GL driver in

  sudo raspi-config

  or by adding

  dtoverlay=vc4-kms-v3d

  to /boot/config.txt
• Open /etc/apt/sources.list and change

  deb http://raspbian.raspberrypi.org/raspbian/ stetch main contrib non-free rpi

  to

  deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi

  ;

Add the official Debian repository by adding

deb http://ftp.debian.org/debian/ buster main contrib non-free

and getting its key

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553

And the Plasma Mobile repository by adding

deb https://debian-pm-tools.github.io/apt-repo buster main

.

• Now upgrade your system by running

  sudo apt-get update

  and

  sudo apt-get upgrade

  .
• To an important step: You can now either change your user to "phablet" or set up ssh by adding an empty ssh.txt to /boot/.
• Install plasma-phone-components, plasma-phone-settings, plasma-settings, kwin-wayland, simplelogin and dbus-x11 by running

  sudo apt-get install plasma-phone-components plasma-phone-settings plasma-settings kwin-wayland simplelogin dbus-x11

Also install qtvirtualkeyboard if you want an on-screen keyboard.

• If you didn't change your user to "phablet" your screen will be frozen now. You can fix that by changing /lib/systemd/system/simplelogin.service; just change "phablet" to the user you want to run Plasma Mobile as; After a reboot your system should boot into Plasma Mobile.

Problems with solutions

• Plasma Mobile does not launch without adding

  dtoverlay=vc4-kms-v3d

  to /boot/config.txt to activate the accelerated graphics driver.
• The Raspbian repo was unreachable over Wifi so I needed to use Ethernet.
• Simplelogin is installed with user "phablet" as running argument, is immediately run after installation and freezes the screen when run without a proper user; To counter this you can either create user "phablet" before installing or change the /lib/systemd/system/simplelogin.service to account for your current user.

Problems

• Sometimes the screen freezes. Crop from syslog:

kernel: [ 4903.278101] vc4-drm soc:gpu: failed to allocate buffer with size 16777216
kernel: [ 4903.278609] vc4-drm soc:gpu: failed to allocate buffer with size 16777216
kernel: [ 4903.279615] vc4-drm soc:gpu: failed to allocate buffer with size 16777216
kernel: [ 4903.279670] [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA:
kernel: [ 4903.279675] [drm]                         kernel:   4000kb BOs (1)
kernel: [ 4903.279679] [drm]                            V3D: 225972kb BOs (472)
kernel: [ 4903.279682] [drm]                     V3D shader:    864kb BOs (216)
kernel: [ 4903.279686] [drm]                           dumb:     32kb BOs (2)
kernel: [ 4903.279691] [drm]                total purged BO:  18148kb BOs (167)
kernel: [ 4903.279699] vc4_v3d 3fc00000.v3d: Failed to allocate memory for tile binning: -12. You may need to enable CMA or give it more memory.

This happens regardless of how much memory your give the GPU and if you enable CMA.

• Angelfish never finishes loading webpages.
• Firefox ESR cannot play youtube videos as it is unable to install openh264.

Tips

• As Plasma Mobile is running on an SD-Card; The speed of the SD-Card is pretty important for its performance. I used a Class 10 card which to me seems to be pretty much the minimum of what you would want to use.
• You can add more verbosity to your Plasma Mobile logging by creating /home/$USER/.config/QtProject/qtlogging.ini and adding

  [Rules]
  org.kde.kwindowsystem.info=true
  org.kde.kwindowsystem.warning=true
  org.kde.kwindowsystem.critical=true
  org.kde.kwindowsystem.debug=true
  kwin_core.info=true
  kwin_core.warning=true
  kwin_core.critical=true
  kwin_core.debug=true
  kwineffects.info=true
  kwineffects.warning=true
  kwineffects.critical=true
  kwineffects.debug=true
  libkwineffects.info=true
  libkwineffects.warning=true
  libkwineffects.critical=true
  libkwineffects.debug=true
  libkwinglutils.info=true
  libkwinglutils.warning=true
  libkwinglutils.critical=true
  libkwinglutils.debug=true
  libkwinxrenderutils.info=true
  libkwinxrenderutils.warning=true
  libkwinxrenderutils.critical=true
  libkwinxrenderutils.debug=true
  kwin_wayland_drm.info=true
  kwin_wayland_drm.warning=true
  kwin_wayland_drm.critical=true
  kwin_wayland_drm.debug=true
  kwin_wayland_framebuffer.info=true
  kwin_wayland_framebuffer.warning=true
  kwin_wayland_framebuffer.critical=true
  kwin_wayland_framebuffer.debug=true
  kwin_wayland_hwcomposer.debug=true
  kwin_wayland_backend.info=true
  kwin_wayland_backend.warning=true
  kwin_wayland_backend.critical=true
  kwin_wayland_backend.debug=true
  kwin_wayland_x11windowed.info=true
  kwin_wayland_x11windowed.warning=true
  kwin_wayland_x11windowed.critical=true
  kwin_wayland_x11windowed.debug=true
  kwin_platform_x11_standalone.info=true
  kwin_platform_x11_standalone.warning=true
  kwin_platform_x11_standalone.critical=true
  kwin_platform_x11_standalone.debug=true
  kwin_libinput.info=true
  kwin_libinput.warning=true
  kwin_libinput.critical=true
  kwin_libinput.debug=true
  kwin_tabbox.info=true
  kwin_tabbox.warning=true
  kwin_tabbox.critical=true
  kwin_tabbox.debug=true
  kwin_decorations.info=true
  kwin_decorations.warning=true
  kwin_decorations.critical=true
  kwin_decorations.debug=true
  kwin_scripting.info=true
  kwin_scripting.warning=true
  kwin_scripting.critical=true
  kwin_scripting.debug=true
  kwin_xkbcommon.info=true
  kwin_xkbcommon.warning=true
  kwin_xkbcommon.critical=true
  kwin_xkbcommon.debug=true
  kwin_qpa_plugin.info=true
  kwin_qpa_plugin.warning=true
  kwin_qpa_plugin.critical=true
  kwin_qpa_plugin.debug=true
  

to it.