From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 38074] Dual head doesn't work for some combination
of monitors (second screen still off)
Date: Tue, 20 Dec 2011 08:54:14 +0000
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https://bugs.freedesktop.org/show_bug.cgi?id=38074
--- Comment #14 from Luzipher 2011-12-20 00:54:14 PST ---
I think I have a similar problem with a laptop card. For me the laptop screen
on LVDS-1 works, but another screen only works when connected to VGA-1. I can
connect it to DVI-D-1 and it is detected correctly and I can activate it using
xrandr (and move the mouse there) - but the monitor will only go into power
save. With VGA-1 everything works as expected.
On windows the second monitor also works via DVI-D-1, so it's not a hardware
limitation (didn't test the nvidia blob).
I also think these bugs might be related:
https://bugs.freedesktop.org/show_bug.cgi?id=30589
https://bugs.freedesktop.org/show_bug.cgi?id=43668
(I did test with "nouveau.perflvl_wr=7777 nouveau.perflvl=2", but I only get
screen corruption that way - also not the 2 instead of 3, since there doesn't
seem to be a perflvl 3 on my card).
Details:
------------------ Versions ------------------
Sabayon Linux Weekly
X.org Server 1.10.4
xf86-video-nouveau-0.0.16_pre20110801
kernel: 3.1.0-sabayon
CPU: x86_64 Intel(R) Core(TM)2 CPU T7400
xrandr 1.3.5 on server 1.3
------------------ lspci -vvv ------------------
01:00.0 VGA compatible controller: nVidia Corporation G71 [Quadro FX 2500M]
(rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell Device 019b
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-
Kernel driver in use: nouveau
Kernel modules: nouveau
------------------ xrandr ------------------
(DVI-D-1 and VGA-1 is the same monitor, of course I tried with only DVI-D-1
connected)
Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 4096 x 4096
LVDS-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 367mm
x 230mm
1920x1200 60.0*+ 59.9
1920x1080 60.0
1600x1200 59.9
1680x1050 60.0
1400x1050 60.0
1280x1024 59.9
1280x960 59.9
1152x864 60.0
1024x768 59.9
800x600 59.9
640x480 59.4
720x400 59.6
640x400 60.0
640x350 59.8
VGA-1 connected 1920x1200+1920+0 (normal left inverted right x axis y axis)
518mm x 324mm
1920x1200 60.0*+
1600x1200 60.0
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
TV-1 disconnected (normal left inverted right x axis y axis)
DVI-D-1 connected (normal left inverted right x axis y axis)
1920x1200 60.0 +
1600x1200 60.0
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
------------------ ------------------
If anybody needs more info I'll be happy to supply it.
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