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Rotate GDM login screen


From: 白い熊
Subject: Rotate GDM login screen
Date: Wed, 25 May 2022 19:47:55 +0200
User-agent: Roundcube Webmail/1.4.7

Hello:

I'm running Guix System on GPD Pocket 3 - it's a neat little device. Its screen is rotated anti-clockwise by 90 degrees by default, so to be usable it must be rotated by 90 to be used. This is easily achievable via appropriate kernel argument in system.scm, it rotates it once logged in.

However the GDM login screen itself is still rotated to the left - an ignorable nuisance. Anyhow for Debian-based systems, I've found the solution at:
https://www.reddit.com/r/GPDPocket/comments/s9ka7g/my_gpd_pocket_3_linux_setup/

via /etc/X11/xorg.conf.d/01-monitor.conf:

Section "Monitor"
    Identifier "DSI-1"
    Option "Rotate" "right"
EndSection

So, along the lines of solving the GDM screen using proper CJK/Japanese fonts in
https://lists.gnu.org/archive/html/help-guix/2022-05/msg00123.html

by using (extra-special-file in system.cfg to construct /var/lib/gdm/.config/fontconfig/fonts.conf what would be the similar file root to specify this config in an (extra-special-file statement, so that it'd be picked up on login and GDM would be properly rotated?

As a side note - and might be associated with this - can a small resolution be specified for just the GDM login screen - because on this computer the screen is tiny, the resolution big and thus the GDM login screen is with super tiny font everywhere.

Many thanks for help.
--
Best regards / 宜しく御願い致します / S pozdravem / C уважением / Z poważaniem / Mit freundlichen Grüßen

白い熊
ShiroiKuma



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