Op Wed, 01 Oct 2014 16:39:56 +0200 schreef <berenger.mo...@neutralite.org>:
Hello.
I have recently acquired 2 (identical, 4/3 shaped) screens, so I
combined them with my current favorite screen on a computer which have 2
graphic cards, but it seems that Debian did not enabled the second card.
I have tried it on a temporary Ubuntu install, and it works fine out of
the box, so Debian must be able to use that 2nd card too. I tried to
install a more recent kernel from backports on Debian just in case, but
still no luck. Now that I'm thinking about it, I did not checked what
Ubuntu uses as driver, so if it uses NVidia, this could be the reason,
since I'm using nouveau on Debian. But I think that Ubuntu does not
install proprietary blobs by default?
I tried to find a xorg.conf in /etc on both system, no one had it.
There is no Internet access from that computer, so packages are
installed from the Ubuntu DVD I bought 2-3 months ago (14.04 IIRC) and
from a Debian DVD set I have downloaded at work (7.5, DVDs 1 to 9 IIRC).
Does anyone knows if nouveau is supports a configuration with 2 graphic
cards, or do I have to install NVidia's drivers to do the job?
Does someone have some links to documents which could explain how to
enable that 2nd card?
Note that I think the second card is disabled, because after doing quick
searches in /sys, I discovered that what I suppose to be the second card
directory have a file named "enabled" which contains "0". But I'm not
expert at all when it comes to kernel stuff.
An easy way is to install the nvidia drivers and use the nvidia-settings
program
to make modifications to your screen. An other solution is to use xrandr,
but
I haven't used it for a long time.
success,
floris
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