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deltamalloc
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Joined: 18 Jan 2013
Posts: 279
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 Posted: Fri Jul 19, 2013 2:34 am Post subject: More optimus problems |
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I now have a working system with Optimus. Working in the sense that I have the ability to run two X servers. The primary one running on i915 and the secondary on the proprietary nvidia driver.
Problem: xrandr shows no connected device when I hook up something to the VGA port.
How is this resolved? I'm unable to find any guide on doing this. This is not trivial for me, because I actually need VGA out to work. |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54216
Location: 56N 3W
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| Posted: Fri Jul 19, 2013 6:49 pm Post subject: |
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deltamalloc,
I'm fairly sure that displays are not hot pluggable, so your VGA will only be seen if its there when xorg starts, or you write a stub xorg.conf to describe the display that you will attach later.
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ppurka
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Joined: 26 Dec 2004
Posts: 3256
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| Posted: Fri Jul 19, 2013 7:16 pm Post subject: |
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| NeddySeagoon wrote: | deltamalloc,
I'm fairly sure that displays are not hot pluggable, so your VGA will only be seen if its there when xorg starts, or you write a stub xorg.conf to describe the display that you will attach later. |
Displays are hotpluggable and have been so for years. I don't know if optimus loses this functionality.
With nvidia drivers (not an optimus machine) I could dynamically enable and configure the second display using the nvidia control center. On an intel system (again, not an optimus machine) I can actually get a udev event (in the "drm" subsystem) and can configure my laptop to automatically enable some specific configuration in the external display as soon as it is plugged in.
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deltamalloc
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Joined: 18 Jan 2013
Posts: 279
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| Posted: Sat Jul 20, 2013 6:29 am Post subject: |
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| ppurka wrote: | | NeddySeagoon wrote: | deltamalloc,
I'm fairly sure that displays are not hot pluggable, so your VGA will only be seen if its there when xorg starts, or you write a stub xorg.conf to describe the display that you will attach later. |
Displays are hotpluggable and have been so for years. I don't know if optimus loses this functionality.
With nvidia drivers (not an optimus machine) I could dynamically enable and configure the second display using the nvidia control center. On an intel system (again, not an optimus machine) I can actually get a udev event (in the "drm" subsystem) and can configure my laptop to automatically enable some specific configuration in the external display as soon as it is plugged in. |
The problem is the following:
Using intel only (forced through a BIOS setting), xrandr shows nothing connected.
Using nvidia only (forced through a BIOS setting), xrandr does show the display connected, and working.
Using Optimus, with both intel and nvidia active, xrandr shows nothing connected.
When xrandr works, nvidia-settings also works.
What I need is some way to make the primary X session be the one driven by the nvidia card when I want to use vga out. Can you, or anyone suggest an X config file for making this happen?
Primary X (intel) server:
| Code: |
Section "Module"
Disable "dri"
EndSection
Section "ServerFlags"
Option "AllowEmptyInput" "no"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 73.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device1"
Driver "intel"
VendorName "onboard"
BusID "PCI:0:2:0"
#Screen 1
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device1"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
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Secondary (nvidia) X server:
| Code: |
Section "DRI"
Mode 0666
EndSection
Section "ServerLayout"
Identifier "Layout0"
Screen "Screen1"
Option "AutoAddDevices" "false"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
EndSection
Section "Files"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "PCI:01:00:0"
Option "IgnoreEDID"
Option "ConnectedMonitor" "CRT-0"
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 73.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
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These two configurations are taken directly from http://en.gentoo-wiki.com/wiki/X.Org/nVidia_Optimus |
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