https://bugs.kde.org/show_bug.cgi?id=397452
Oded Arbel <o...@geek.co.il> changed:
What |Removed |Added
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CC| |o...@geek.co.il
--- Comment #2 from Oded Arbel <o...@geek.co.il> ---
BTW, it is possible to tell the kernel to set a specific panel orientation for
specific display ports, even if the hardware doesn't do it by itself - for
example, I have an external monitor that is vertically oriented, but the
hardware doesn't know about it (I'm guessing the Dell desktop monitor doesn't
have an orientation sensor...), so I can tell the kernel - using the kernel
command line - "please note that this connector it plugged into a vertically
oriented screen".
To do that, add a `video` parameter to the kernel command line (for example, by
editing /etc/default/grub in a Debian based OS), which is formatted as such:
`video=<connector>:panel_orientation=<orientation>`, where "orientation" is a
valid value as documented in the kernel framebuffer documentation:
https://docs.kernel.org/fb/modedb.html. For example, my setup is
`video=DP-3:panel_orientation=left_side_up` (the connector name comes from
looking under /sys/class/drm and removing the card identifier; the kscreen KCM
used to show the connector name, but it does not anymore).
Unfortunately, while this works well for plymouth's boot graphics, it doesn't
actually changes the text VT orientation, nor SDDM's display configuration -
which is the main thing I was trying to achieve - SDDM doesn't support vertical
screens and it is always annoying.
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