Re: two graphics cards and two monitors
Eric S Fraga composed on 2017-11-03 14:22 (UTC):
> I am trying to get a similar system configure with Debian testing/buster
> and not getting anywhere beyond having two monitors on a single card
Is this a first try (has this ever worked before trying with Buster)?
> I have three monitors, two on first card and 1 on second
> card. Only the ones of the first card are getting managed by
> Xorg. Although the second card and associated monitor are found by
> Xorg, I cannot seem to get Xorg to configure and actually use this third
> Details follow:
> $ dpkg --list '*nouveau*'
> libdrm-nouveau2:amd64 2.4.84-2
> xserver-xorg-video-nouveau 1:1.0.15-2
> $ lspci | grep VGA
> 03:00.0 VGA compatible controller: NVIDIA Corporation GM107GL [Quadro K620] (rev a2)
> 04:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
To be clear, both are PCIe cards, neither is onboard or integrated in the CPU
> $ uname -a
> Linux xxx 4.13.0-1-amd64 #1 SMP Debian 4.13.4-2 (2017-10-15) x86_64 GNU/Linux
> Selected lines from Xorg.0.log:
> [ 3877.659] (--) NOUVEAU(0): Chipset: "NVIDIA NV117"
> [ 3877.659] (II) NOUVEAU(0): Creating default Display subsection in Screen section
> [ 3877.693] (II) NOUVEAU(0): Output DVI-I-1 using monitor section rotated
> [ 3877.768] (II) NOUVEAU(0): Monitor name: DELL U2412M
> [ 3877.783] (II) NOUVEAU(0): Monitor name: DELL U3818DW
> [ 3877.783] (II) NOUVEAU(0): Output DVI-I-1 connected
> [ 3877.783] (II) NOUVEAU(0): Output DP-1 connected
> [ 3877.783] (--) NOUVEAU(G0): Chipset: "NVIDIA NVA8"
> [ 3877.795] (II) NOUVEAU(G0): Output DVI-I-1-2 using monitor section rotated
> [ 3877.851] (II) NOUVEAU(G0): Output HDMI-1-1 has no monitor section
> [ 3877.862] (II) NOUVEAU(G0): Output VGA-1-1 has no monitor section
> [ 3878.010] (II) NOUVEAU(G0): Monitor name: SHARP HDMI
> but then nothing is connected to this monitor or this monitor is not
> connected to anything... The strange thing is that the output says that
> output DVI-I-1-2 will use the "rotated" monitor section which has
> already been assigned to the DVI-I-1 output.
> I can post Xorg.0.log as well as my current xorg.conf if anybody is
> interested. Without an xorg-conf at all, I get the same effective
> behaviour: two monitors working but third one ignored.
> Any suggestions welcome.
Things I would try:
1-Purge xserver-xorg-video-nouveau (IOW, does default modesetting driver find
three connected displays?).
2-Check if a Knoppix boot generates similar failure.
3-Swap the two cards between PCIe slots.
4-Can you get output on two displays if you remove the Quadro (IOW, will the
GeForce work at all)?
5-Try a DVI cable type with the GeForce/Sharp if the Sharp has a DVI port.
6-Try the GeForce with a DVI-to-HDMI adapter and HDMI cable.
7-Try a different HDMI port on the Sharp if it has more than one.
8-Report http://www.ucl.ac.uk/~ucecesf/tmp/xorglog.txt and failure on one of the
lists devoted to Xorg hardware issues, such as email@example.com or
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