[ltp] x41 monitor selection

[Paul Fox]

alex wrote:
 > On 1/30/07, Paul Fox <pgf@foxharp.boston.ma.us> wrote:
 > > as a reminder, my problem is that using the fn-key to switch
 > > monitors on my X41 will give me either the external or the
 > > built-in display, but not both.  this is even though both
 > > displays work fine together when the X server first starts (or is
 > > restarted).
 ...
 > 
 > Unfortunately, you are going to be out of luck.  The problem is you
 > have two things writing to the video hardware without each other's
 > knowledge.  When you press the fn-key video output toggle, the video
 > bios arbitrarily writes whatever it wants to do to the video hardware.

so am i to take it that this mode of video switching (with the fn-key)
doesn't work for anyone on their thinkpad?  if that's the case, i'm
surprised (and disappointed!) that no one else has spoken up.  :-)

 >  This writes all over the values the xorg driver has written.  After
 > you've pressed  the fn-key combo a few times the hardware state is
 > completely hosed up.  You may be able to get it back by switching to

well, it's not completely hosed -- the two single-display modes continue
working fine.  it's only the dual-display mode that doesn't work.

i was sort of wondering if i'm not seeing a variant of this bug:
    https://bugs.freedesktop.org/show_bug.cgi?id=5817

i think i understand the rest of what you said, and it makes sense...

paul
=---------------------
 paul fox, pgf@foxharp.boston.ma.us (arlington, ma, where it's 24.3 degrees)