On 01/16/2016 01:31 PM, Boudhayan Gupta wrote:
Hi Ken and all,
I appreciate all of the input folks are providing. However, I asked the
simple question if separate X screens could be configured on Intel
integrated graphics. The discussion seems to have degenerated into "you
don't want to do" what I wish to do and "you should try something else."
There are legitimate use cases for this. I suspect Ken wants to do
something like running a completely different X session on a second
monitor.
What you're looking for is Zaphod mode. There *is* a configuration
option for this, but I have no idea whether the code paths are bug
free or even implemented.
An example for using Zaphod mode with nouveau is here at
http://nouveau.freedesktop.org/wiki/MultiMonitorDesktop/. The same
configuration tweaked for the intel driver should work.
-- Boudhayan
I took the example xorg.conf in the link you provided and made these
changes:
Changed Driver to "intel" from "nouveau"
Changed the BusID to "PCI:0:2.0" as obtained from lspci
Set the actual connectors:
Option "ZaphodHeads" "DP-1"
Option "ZaphodHeads" "HDMI-A-1"
Unfortunately this did not bring up an X display. Here are the errors I
observed in Xorg.0.log
[ 87.163] (II) intel(0): Using Kernel Mode Setting driver: i915,
version 1.6.0 20150327
[ 87.163] (EE) Screen 0 deleted because of no matching config section.
[ 87.163] (II) UnloadModule: "intel"
[ 87.163] (EE) Device(s) detected, but none match those in the config
file.
[ 87.163] (EE)
Fatal server error:
[ 87.163] (EE) no screens found(EE)
[ 87.163] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 87.163] (EE) Please also check the log file at
"/var/log/Xorg.0.log" for additional information.
[ 87.163] (EE)
[ 87.170] (EE) Server terminated with error (1). Closing log file.
I thought that the stub in the example would have been enough to at
least light the monitor:
Section "Screen"
Identifier "Screen0"
Device "Device0"
EndSection
I guess I need to dig through my other examples and see if I can find
some more meat to put in the section.
Ken
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