Created attachment 521881 [details]
Xorg.0.log where nouveau does not work
Description of problem:
Dual head does not work on a "nVidia Corporation G96 [Quadro FX 380] (rev a1)" (from lspci) graphics card.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. connect two monitors to the DVI connectors on
2. start Xorg
3. Xorg loads nouveau
4. xrandr detects both monitors
5. xrandr can enable both monitors and resizes the desktop (or flip around)
6. the second display does not show anything (as if no signal is coming)
Only one monitor can be used.
Both monitors can be used.
http://nouveau.freedesktop.org/wiki/Randr12 contains some good hints on dual head, none of these tips made a change. (The second monitor never gets a signal)
During boot, the BIOS will only be shown on the first monitor, same for grub.
Created attachment 521882 [details]
output of xrandr after startup
Here xorg.conf contained the single screen configuration as described on http://nouveau.freedesktop.org/wiki/Randr12
Created attachment 521883 [details]
xrandr output after a "xrandr --output DVI-I-2 --right-of DVI-I-1"
executing the command "xrandr --output DVI-I-1 --right-of DVI-I-2" results in displaying the background on the working monitor, the second monitor where the terminal now is, stays black and cycles through the connectors/source.
Can you post your dmesg output after booting with both displays connected?
Created attachment 522256 [details]
output from dmesg with both monitors connected
This actually comes from /var/log/messages when booting before the proprietary nvidia driver was installed. Please let me know if you need any more details. I'll happily revert to nouveau for further testing.
That log had the information I was after in it, so that's fine! Unfortunately, it didn't actually reveal any good reason why the second display wouldn't work.
If you get a chance, are you able to (using nouveau) boot with "log_buf_len=1M drm.debug=14 nouveau.reg_debug=0x600 3" in your kernel boot options?
It probably isn't necessary to uninstall the binary driver for this btw, if you boot with the above options, login to the text console and "modprobe -r nvidia nouveau; modprobe nouveau modeset=1", then grab dmesg, it should also suffice.
Created attachment 522341 [details]
dmesg with additional debug options set
Rebooted, set the options, unloaded the nvidia driver and modprobe'd nouveau.
WFM with the new kernel kernel-3.4.4-4.fc16
Also switching off ACPI at boot time seems to be a workaround for this (even with older kernels).
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