[ltp] Re: RFC: removal of video output switching from thinkpad-acpi

Paul Fox linux-thinkpad@linux-thinkpad.org
Fri, 15 Feb 2008 07:21:55 -0500


henrique -- were these results helpful?

paul

i wrote:
 > henrique de moraes holschuh wrote:
 >  > On Sun, 10 Feb 2008, Paul Fox wrote:
 >  > > i assume that by "thinkpad-acpi commands", you're referring to the
 >  > > scripts under /etc/acpi?  if not, what should i install?
 >  > 
 >  > Not really.  Look in Documentation/thinkpad-acpi.txt for your kernel, and you
 >  > will see the entire thinkpad-acpi documentation.  There is a section called
 >  > Video output control or somesuch, which are the commands available through
 >  > /proc/acpi/ibm/video.  I need you to test those.
 > 
 > okay.
 > 
 > under X, nothing works.  echoing any of the commands into the /proc node
 > results in both screens being active.  sometimes one blanks briefly before
 > coming back.
 > 
 > when on the console, none of the commands work, with the exception of:
 >     a) video_switch, which causes one, or the other, of the displays to
 > 	be active, but never both, and
 >     b) a combination of "crt_enable,lcd_disable" (or vice versa), which
 > 	act just like video_switch.
 > 
 > under no circumstances can i get both displays on in console mode.
 > 
 > auto-switching doesn't seem to work, at least when docking or undocking.
 > 
 > i'm not sure how to test the expand_toggle, and i don't have a dvi output.
 > 
 > let me know if i should try anything else.
 > 
 > paul

=---------------------
 paul fox, pgf@foxharp.boston.ma.us (arlington, ma, where it's 27.1 degrees)