https://bugs.freedesktop.org/show_bug.cgi?id=43167

Jani Nikula jani.nikula@intel.com changed:

What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |NEEDINFO

--- Comment #42 from Jani Nikula jani.nikula@intel.com --- (In reply to comment #34)

1. I did _exactly_ what you asked me to do. Twice. The hard way.

To BISECT so one can find out where/when exactly this problem happened.

The bisection requested by _you_, shows clearly and unequivocally that the Bug occurred on this change:

04fee895ef98ffbb91a941b53a92d6949bb6d1c4 is the first bad commit commit 04fee895ef98ffbb91a941b53a92d6949bb6d1c4 Author: Rolf Eike Beer eike-kernel@sf-tec.de Date: Wed Jun 15 11:27:02 2011 +0200

DRM: clean up and document parsing of video= parameter

That means that just BEFORE (i.e. any kernel release) there was no problem (drm, fb or _otherwise_) and AT THE TIME of this commit (04fee...6d1c4) and THEREAFTER this particular Bug showed up and persists to this day.

For completeness, the bisect result points at the first commit that actually starts using the margins ('m') option of the mode. Before the commit, it was silently ignored and unused. After the commit, the margins option is used and clearly does not work for you.

Does dropping 'm' from the modeline solve your problem?