My particular use-case is such that 'ddcutil' can issue commands over
the Display Data Channel (DDC), which does not work as
long CONFIG_DRM_AMD_DC is enabled.
Or do you mean that the 'amdgpu.dc' parameter deprecated? If not, then
it's a regression that should be fixed.
Kind regards
On Sat, 21 Feb 2026 16:38:50 +0100 Ben Hutchings <[email protected]>
wrote:
> On Sat, 2026-02-21 at 10:48 +0100, JohnDoeThe3rd wrote:
> > Package: src:linux
> > Version: 6.18.5-1~bpo13+1
> > Severity: important
> > X-Debbugs-Cc: [email protected]
> >
> >
> > Greetings.
> >
> > When the Kernel command-line parameter 'amdgpu.dc=0' is used, the
screen resolution
> > (and TTY font) does not change on boot (i.e. stays whatever was
used in GRUB).
> > The boot messages stop updating and a few seconds after, the screen
turns off.
> [...]
>
> So don't use that parameter, then.
>
> Ben.
>
> --
> Ben Hutchings
> Who are all these weirdos? - David Bowie, on joining IRC
