On Tue Nov 29 00:00:34 2011, sashan wrote:
On Sun Nov 27 18:51:03 2011, sashan wrote:
On Sat Nov 26 22:13:49 2011, Keith Packard wrote:
On Sun, 27 Nov 2011 16:01:52 +1100, sashan sas...@zenskg.net wrote:
Hi
I'm trying to figure out why the external hdmi output on my laptop
doesn't work
but am not sure where the problem is or if this is the right mailing
list.
I'd bet money that the hdmi connector is only hooked up to the nVidia
device, which means you'd have to use that one to display anything over
that connector.
Yeah that might be the case but the document
http://www.nvidia.com/object/LO_optimus_whitepapers.html about nvidia
optimus
basically says that the datapath to the physical monitor is always through
the
Intel IGP and then the IGP is responsible for writing to the display. The
nVidia chip is between the application and the IGP, therefore I expected
that
the IGP would be connected to the HDMI port. However I'm probably wrong and
would appreciate if you or someone could clarify my understanding about how
this
is meant to work.
The laptop is a Dell XPS 15z
(http://reviews.cnet.com/laptops/dell-xps-15z/4507-3121_7-34714594.html)
I've been able to get output from the HDMI port onto the monitor by adding the
ModulePath to the nvidia driver to xorg.conf, so it looks like you're right
about the fact that it's connected to the nVidia gpu.
The problem now is that the higher resolutions aren't detected. The highest it
goes is 640x480. I've tried to manually add a modeline but this is ignored.
The
xorg log shows this when it encounteres the modeline it can't validate:
(WW) NVIDIA(0): No valid modes for 1920x1080; removing.
Is there anyway I can fix this? I've attached the xorg.conf and xorg log file.
Never mind I've got this working. ReadEDID was set to false in the xorg.conf I
posted. I deleted that and X is able to correctly detect modelines.
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