puri.sm librem 13 v3
Pipe key
Pipe key did not work on German keyboard after upgrading from Debian 9 stable to unstable.
HiDPI
https://forums.puri.sm/t/librem-13-v3-font-size-too-small-or-too-large/3711/3
The librem 13 v3 has 1920x1080 px resolution, on 13". This is "hidpi".
Standard PureOS shipped had much too small fonts and icons.
xpdyinfo reported 96 dpi resolution, which is really wrong. In reality it's 166 dpi.
I told X11 to use the real screen size, and Cinnamon uses this information correctly (KDE, Gnome, Mate, XFCE not):
$ cat /etc/X11/xorg.conf.d/90-librem-display.conf
# xdpyinfo | grep -B2 resolution
# https://wiki.archlinux.org/index.php/xorg#Display_size_and_DPI
Section "Monitor"
Identifier "eDP-1"
DisplaySize 294 166 # In millimeters
EndSection
I also had to set "Font scaling factor" in the cinnamon font settings to 1.3
Qt
The traditional approach to supporting high DPI has been one where Qt scaled fonts automatically, and then provided a DPI value that application code could use to scale the rest of the UI.
Setting the DPI value manually to a lower values gives better font sizes:
$ QT_FONT_DPI=128 zeal
Maybe the main issue is that Cinnamon pushes the configured font sizes (for Gtk) 1:1 to Qt, probably via the QT_QPA_PLATFORMTHEME variable.
Ding / Tk
Edit ding executable, add:
tk scaling 2.0
Fan at full speed after resume
I needed a new coreboot version to fix this.
Instructions:
