"Subpixel smoothing" options should be per-monitor

Konstantin Ryabitsev icon at fedoraproject.org
Fri May 28 13:51:17 UTC 2010

On Fri, May 28, 2010 at 9:40 AM, Matt McCutchen <matt at mattmccutchen.net> wrote:
> On Fri, 2010-05-28 at 09:24 -0400, Konstantin Ryabitsev wrote:
>> This is fairly obvious, but I couldn't find anything in bugzilla, so
>> I'll mention it here. I have a docking station and an LCD monitor
>> connected to it. When I dock, I have two screens -- one that's
>> attached to my laptop, another that is external. That part works fine.
>> However, I run into problems when I set up sub-pixel smoothing. My
>> laptop is VRGB, while my external LCD is RGB. There's currently no
>> option (that I see) to set up sub-pixel smoothing tweaks per-monitor,
>> while there really should be, because I either have colourful fonts on
>> one screen or the other screen. The only option that I have currently
>> is to not use sub-pixel smoothing.
> I think you're right.  Please file a bug.

Should this be an upstream Xorg bug, then?

> Note that when multiple monitors are combined into an X screen with
> Xinerama, it is possible (though rare) for a single character to span
> multiple screens.  I guess the part lying on each screen should be
> rendered with the correct option for that screen.  That may take some
> work to implement.

Having recently had a reason to touch Windows 7, I know that they do
it per screen for ClearType. Not that it helps in any way, but figured
I would mention this fact. :)

McGill University IT Security
Konstantin "Kay" Ryabitsev
Montréal, Québec

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