I have multiseat configured and my Xorg has 2 server layouts. One is for nVidia card and other is for Intel card. They both work, but display server assigned to Intel card doesn't have hardware acceleration since DRI and GLX module being used is from nVidia driver.

So my question is, can I configure layouts somehow to use right DRI and GLX with each card?

My Xorg.conf:

Section "ServerLayout"
    Identifier     "Default"
    Screen      0  "Screen0" 0 0
    Option         "Xinerama" "0"
EndSection

Section "ServerLayout"
    Identifier     "TV"
    Screen      0  "Screen1" 0 0
    Option         "Xinerama" "0"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "DELL E198WFP"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GT 610"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "intel"
    BusID          "PCI:0:2:0"
    Option         "AccelMethod" "uxa"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-1"
    Option         "metamodes" "DFP-0: nvidia-auto-select +1440+0, DFP-1: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Log file for Intel:

[    18.239] 
X.Org X Server 1.13.0
Release Date: 2012-09-05
[    18.239] X Protocol Version 11, Revision 0
[    18.239] Build Operating System: Linux 2.6.24-32-xen x86_64 Ubuntu
[    18.239] Current Operating System: Linux bytewiper 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64
[    18.239] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.5.0-18-generic root=UUID=fc0616fd-f212-4846-9241-ba4a492f0513 ro quiet splash
[    18.239] Build Date: 20 September 2012  11:55:20AM
[    18.239] xorg-server 2:1.13.0+git20120920.70e57668-0ubuntu0ricotz (For technical support please see http://www.ubuntu.com/support) 
[    18.239] Current version of pixman: 0.26.0
[    18.239]    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    18.239] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    18.239] (==) Log file: "/var/log/Xorg.1.log", Time: Wed Nov 21 18:32:14 2012
[    18.239] (==) Using config file: "/etc/X11/xorg.conf"
[    18.239] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    18.239] (++) ServerLayout "TV"
[    18.239] (**) |-->Screen "Screen1" (0)
[    18.239] (**) |   |-->Monitor "Monitor1"
[    18.240] (**) |   |-->Device "Device1"
[    18.240] (**) Option "Xinerama" "0"
[    18.240] (==) Automatically adding devices
[    18.240] (==) Automatically enabling devices
[    18.240] (==) Automatically adding GPU devices
[    18.240] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist.
[    18.240]    Entry deleted from font path.
[    18.240] (==) FontPath set to:
    /usr/share/fonts/X11/misc,
    /usr/share/fonts/X11/Type1,
    built-ins
[    18.240] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[    18.240] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    18.240] (II) Loader magic: 0x7f6917944c40
[    18.240] (II) Module ABI versions:
[    18.240]    X.Org ANSI C Emulation: 0.4
[    18.240]    X.Org Video Driver: 13.0
[    18.240]    X.Org XInput driver : 18.0
[    18.240]    X.Org Server Extension : 7.0
[    18.240] (II) config/udev: Adding drm device (/dev/dri/card0)
[    18.241] (--) PCI: (0:0:2:0) 8086:0152:1043:84ca rev 9, Mem @ 0xf7400000/4194304, 0xd0000000/268435456, I/O @ 0x0000f000/64
[    18.241] (--) PCI:*(0:1:0:0) 10de:104a:1458:3546 rev 161, Mem @ 0xf6000000/16777216, 0xe0000000/134217728, 0xe8000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288
[    18.241] (II) Open ACPI successful (/var/run/acpid.socket)
[    18.241] Initializing built-in extension Generic Event Extension
[    18.241] Initializing built-in extension SHAPE
[    18.241] Initializing built-in extension MIT-SHM
[    18.241] Initializing built-in extension XInputExtension
[    18.241] Initializing built-in extension XTEST
[    18.241] Initializing built-in extension BIG-REQUESTS
[    18.241] Initializing built-in extension SYNC
[    18.241] Initializing built-in extension XKEYBOARD
[    18.241] Initializing built-in extension XC-MISC
[    18.241] Initializing built-in extension SECURITY
[    18.241] Initializing built-in extension XINERAMA
[    18.241] Initializing built-in extension XFIXES
[    18.241] Initializing built-in extension RENDER
[    18.241] Initializing built-in extension RANDR
[    18.241] Initializing built-in extension COMPOSITE
[    18.241] Initializing built-in extension DAMAGE
[    18.241] Initializing built-in extension MIT-SCREEN-SAVER
[    18.241] Initializing built-in extension DOUBLE-BUFFER
[    18.241] Initializing built-in extension RECORD
[    18.241] Initializing built-in extension DPMS
[    18.241] Initializing built-in extension X-Resource
[    18.241] Initializing built-in extension XVideo
[    18.241] Initializing built-in extension XVideo-MotionCompensation
[    18.241] Initializing built-in extension XFree86-VidModeExtension
[    18.241] Initializing built-in extension XFree86-DGA
[    18.241] Initializing built-in extension XFree86-DRI
[    18.241] Initializing built-in extension DRI2
[    18.241] (II) LoadModule: "glx"
[    18.241] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/libglx.so
[    18.247] (II) Module glx: vendor="NVIDIA Corporation"
[    18.247]    compiled for 4.0.2, module version = 1.0.0
[    18.247]    Module class: X.Org Server Extension
[    18.247] (II) NVIDIA GLX Module  310.19  Thu Nov  8 01:12:43 PST 2012
[    18.247] Loading extension GLX
[    18.247] (II) LoadModule: "intel"
[    18.248] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[    18.248] (II) Module intel: vendor="X.Org Foundation"
[    18.248]    compiled for 1.13.0, module version = 2.20.13
[    18.248]    Module class: X.Org Video Driver
[    18.248]    ABI class: X.Org Video Driver, version 13.0
[    18.248] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
    i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G,
    E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
    965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
    4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale,
    Sandybridge Desktop (GT1), Sandybridge Desktop (GT2),
    Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1),
    Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+),
    Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2),
    Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server,
    Ivybridge Server (GT2), Haswell Desktop (GT1), Haswell Desktop (GT2),
    Haswell Desktop (GT2+), Haswell Mobile (GT1), Haswell Mobile (GT2),
    Haswell Mobile (GT2+), Haswell Server (GT1), Haswell Server (GT2),
    Haswell Server (GT2+), Haswell SDV Desktop (GT1),
    Haswell SDV Desktop (GT2), Haswell SDV Desktop (GT2+),
    Haswell SDV Mobile (GT1), Haswell SDV Mobile (GT2),
    Haswell SDV Mobile (GT2+), Haswell SDV Server (GT1),
    Haswell SDV Server (GT2), Haswell SDV Server (GT2+),
    Haswell ULT Desktop (GT1), Haswell ULT Desktop (GT2),
    Haswell ULT Desktop (GT2+), Haswell ULT Mobile (GT1),
    Haswell ULT Mobile (GT2), Haswell ULT Mobile (GT2+),
    Haswell ULT Server (GT1), Haswell ULT Server (GT2),
    Haswell ULT Server (GT2+), Haswell CRW Desktop (GT1),
    Haswell CRW Desktop (GT2), Haswell CRW Desktop (GT2+),
    Haswell CRW Mobile (GT1), Haswell CRW Mobile (GT2),
    Haswell CRW Mobile (GT2+), Haswell CRW Server (GT1),
    Haswell CRW Server (GT2), Haswell CRW Server (GT2+),
    ValleyView PO board
[    18.248] (++) using VT number 8

[    18.593] (II) intel(0): using device path '/dev/dri/card0'
[    18.593] (**) intel(0): Depth 24, (--) framebuffer bpp 32
[    18.593] (==) intel(0): RGB weight 888
[    18.593] (==) intel(0): Default visual is TrueColor
[    18.593] (**) intel(0): Option "AccelMethod" "uxa"
[    18.593] (--) intel(0): Integrated Graphics Chipset: Intel(R) Ivybridge Desktop (GT1)
[    18.593] (**) intel(0): Relaxed fencing enabled
[    18.593] (**) intel(0): Wait on SwapBuffers? enabled
[    18.593] (**) intel(0): Triple buffering? enabled
[    18.593] (**) intel(0): Framebuffer tiled
[    18.593] (**) intel(0): Pixmaps tiled
[    18.593] (**) intel(0): 3D buffers tiled
[    18.593] (**) intel(0): SwapBuffers wait enabled

...

[    20.312] (II) Module fb: vendor="X.Org Foundation"
[    20.312]    compiled for 1.13.0, module version = 1.0.0
[    20.312]    ABI class: X.Org ANSI C Emulation, version 0.4
[    20.312] (II) Loading sub module "dri2"
[    20.312] (II) LoadModule: "dri2"
[    20.312] (II) Module "dri2" already built-in
[    20.312] (==) Depth 24 pixmap format is 32 bpp
[    20.312] (II) intel(0): [DRI2] Setup complete
[    20.312] (II) intel(0): [DRI2]   DRI driver: i965
[    20.312] (II) intel(0): Allocated new frame buffer 1920x1080 stride 7680, tiled
[    20.312] (II) UXA(0): Driver registered support for the following operations:
[    20.312] (II)         solid
[    20.312] (II)         copy
[    20.312] (II)         composite (RENDER acceleration)
[    20.312] (II)         put_image
[    20.312] (II)         get_image
[    20.312] (==) intel(0): Backing store disabled
[    20.312] (==) intel(0): Silken mouse enabled
[    20.312] (II) intel(0): Initializing HW Cursor
[    20.312] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[    20.313] (**) intel(0): DPMS enabled
[    20.313] (==) intel(0): Intel XvMC decoder enabled
[    20.313] (II) intel(0): Set up textured video
[    20.313] (II) intel(0): [XvMC] xvmc_vld driver initialized.
[    20.313] (II) intel(0): direct rendering: DRI2 Enabled
[    20.313] (==) intel(0): hotplug detection: "enabled"
[    20.332] (--) RandR disabled

[    20.335] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)

[    20.335] (II) intel(0): Setting screen physical size to 508 x 285
[    20.338] (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
[    20.340] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[    20.340] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    20.340] (II) LoadModule: "evdev"
[    20.340] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so