nvidia and external projector: user-specific issues??

[Matt Price]

hi,

I have a dell latitude d820 which is currently running feisty and the
most recent nvidia drivers (nv apparently doesn't support the use of the
external vga out, so I pretty much have to use nvidia).  

Using nvidia-settings and twinview I can easily switch configurations on
my laptop if a crt is attached (crt off, crt left/right of  built-in
screen, crt cloning built-in).  However if I try to do the same with the
hitachi projector they uei n my building, I get an error message from
the projector -- somehting like "error in sync rates.  fSync: 95kHz
vSync: 60Hz." [this could be inaccurate, wasn't taking notes in the
room]
  My xorg.conf is somewhat complex and cluttered with remnants of
earlier unsuccessful attempts to get this working, but I tried editing
the HorizSnc/VertSync and (in the nvidia device section)
SecondMonitorHorizSync and SecondMonitorVertSync.  But this didn't work.
In fesperation, I created a new user and tried running the slideshow
from that user.  presto!  it worked.  but I can't for the  life of me
figure out why!  

I didn't at that point have much opportunity to fool around, but I did
delete my .nvidiasettings-rc in the original user's home dir, to no
effect.  So what's going on?  How can the *user settings* be responsible
for some sync issue of this kind?  

one other thing that crosses my mind:  my original user was running
gnome, with beryl-manager running as well; the new user automatically
logged in under xfce for some reason.  didn'thave a chance to test out
the original user in xfce unfortunately, will do so afte next
presentation.  

but anyway:  can anyone think of what might be at issue here?  thanks,

matt


-- 
Matt Price
History Dept
University of Toronto
matt.price at utoronto.ca
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20070212/8263a44b/attachment.sig>