Blind people do not connect screens

James Cloos cloos at jhcloos.com
Wed Mar 4 05:00:04 PST 2009


>>>>> "Samuel" == Samuel Thibault <samuel.thibault at ens-lyon.org> writes:

Samuel> Some blind people report that Xorg refuses to start when no screen
Samuel> is connected to their machine.

Samuel> - have drivers not fail when no screen is connected, but use some
Samuel>   default sane resolution.  Needs cooperation from all drivers.

That is the only sane option.  There is no need to use a different video
driver.  All drivers for video hardware which can drive an external
monitor ought to be able to handle hot plugging of external monitors.

And they ought to be able to do it themselves, without bothering with
any external daemons.  They are, after all, driving the very hardware
which controls the external sockets.

The default might have to be 640x480 at 60Hz -- unless of course something
is specified in xorg.conf -- but so be it.

On hardware which can do reliable hot plug detection, the EDID can be
read and the modes set whenever a monitor is connected or turned on, and
the current output can be left alone whenever a monitor is turned off or
disconnected.

On hardware which cannot do reliable hot plug detection, only change
modes when asked -- via xrandr -- by the user.

-JimC
-- 
James Cloos <cloos at jhcloos.com>         OpenPGP: 1024D/ED7DAEA6



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