LinuxQuestions.org - dual screen problem on HP Compaq

Hello,

I am running a slamd64 12.1 with a 2.6.27.7 kernel on a Compaq 6510b (Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller)

I tried to follow the intel linux graphics tutorial (http://intellinuxgraphics.org/dualhead.html) and have modified the xorg.conf like this:

Code:

Section "Monitor"



    Identifier  "monLVDS"



# HorizSync is in kHz unless units are specified.

# HorizSync may be a comma separated list of discrete values, or a

# comma separated list of ranges of values.

# NOTE: THE VALUES HERE ARE EXAMPLES ONLY.  REFER TO YOUR MONITOR'S

# USER MANUAL FOR THE CORRECT NUMBERS.



    HorizSync  31.5 - 50.0



#    HorizSync        30-64        # multisync

#    HorizSync        31.5, 35.2    # multiple fixed sync frequencies

#    HorizSync        15-25, 30-50  # multiple ranges of sync frequencies



# VertRefresh is in Hz unless units are specified.

# VertRefresh may be a comma separated list of discrete values, or a

# comma separated list of ranges of values.

# NOTE: THE VALUES HERE ARE EXAMPLES ONLY.  REFER TO YOUR MONITOR'S

# USER MANUAL FOR THE CORRECT NUMBERS.



    VertRefresh 40-90



    Option "PreferredMode"  "1440x900"



#    Option "LeftOf" "monVGA"



EndSection



Section "Monitor"



    Identifier "monVGA"



#    Option "PreferredMode"  "1280x1024"

    HorizSync  31.0 - 69.0

    VertRefresh 56-85



    Option "RightOf" "monLVDS"



EndSection





# **********************************************************************

# Graphics device section

# **********************************************************************



# Any number of graphics device sections may be present



#Section "Device"

#    Identifier  "VESA Framebuffer"

#    Driver      "vesa"

#    #VideoRam    4096

#    # Insert Clocks lines here if appropriate

#EndSection



Section "Device"

    Identifier  "Intel"

    Driver      "intel"



    Option "monitor-VGA" "monVGA"

    Option "monitor-LVDS" "monLVDS"



#    Option "DRI" "true"

#    Option "XVideo" "true"

#    #Option "DisplayInfo" "true"

#    Option "RenderAccel" "true"

#    Option "XAANoOffscreenPixmaps" "true"

    Option "AccelMethod" "EXA"



EndSection



# **********************************************************************

# Screen sections

# **********************************************************************



# Any number of screen sections may be present.  Each describes

# the configuration of a single screen.  A single specific screen section

# may be specified from the X server command line with the "-screen"

# option.

Section "Screen"

    Identifier  "Screen 1"

    Device      "Intel"

    Monitor    "monLVDS"



# If your card can handle it, a higher default color depth (like 24 or 32)

# is highly recommended.



#  DefaultDepth 8

#  DefaultDepth 16

  DefaultDepth 24

#  DefaultDepth 32



# "1024x768" is also a conservative usable default resolution.  If you

# have a better monitor, feel free to try resolutions such as

# "1152x864", "1280x1024", "1600x1200", and "1800x1400" (or whatever your

# card/monitor can produce)



#    Option "RenderAccel" "True"

#    Option "AllowGLXWithComposite" "True"

#    Option "AddARGBGLXVisuals" "True"



#    Subsection "Display"

#        Depth      8

#        Modes "1024x768" "800x600" "640x480"

#    EndSubsection

#    Subsection "Display"

#        Depth      16

#        Modes "1024x768" "800x600" "640x480"

#    EndSubsection

    Subsection "Display"

        Depth      24

#        Modes "1280x1024" "1280x800"

        Modes "1440x900"

        Virtual 2720 1024

    EndSubsection

    Subsection "Display"

        Depth      32

#        Modes "1280x1024" "1280x800"

        Modes "1440x900"

        Virtual 2720 1024

    EndSubsection



EndSection

The problem now is that the LVDS-Monitor doesn't have the full resolution of 1440x900 but 1152x768:

Code:

bash-3.1$ xrandr

Screen 0: minimum 320 x 200, current 2432 x 1024, maximum 2720 x 1024

VGA connected 1280x1024+1152+0 (normal left inverted right x axis y axis) 338mm x 270mm

  1280x1024      60.0*+  59.9

  1152x864      75.0

  1024x768      74.9    75.1    60.0

  832x624        74.6

  800x600        75.0    74.9    60.3

  640x480        75.0    74.8    60.0

  720x400        70.1

LVDS connected 1152x768+0+0 (normal left inverted right x axis y axis) 304mm x 190mm

  1152x768      54.8*

  1024x768      60.0

  832x624        74.6

  800x600        72.2    75.0    60.3    56.2

  640x480        85.0    72.8    75.0

  720x400        85.0

  640x400        85.1

  640x350        85.1

TV disconnected (normal left inverted right x axis y axis)

bash-3.1$ xrandr --output LVDS -s 1440x900

bash-3.1$ xrandr --output LVDS --mode 1440x900

xrandr: cannot find mode 1440x900

bash-3.1$

The -s command has no effect at all...

Is it possible to add the 1440x900 mode?

Thanks

---------

Now I have got some error messages, sometimes the following is just appearing on the screen:

Code:

Message from syslogd@paul at Thu Jan  8 06:26:08 2009 ...

paul kernel: [ 7772.608177] Disabling IRQ #16

Code:

bash-3.1$ cat /proc/interrupts

          CPU0      CPU1

  0:    5735415    474105  IO-APIC-edge      timer

  1:      4854      4748  IO-APIC-edge      i8042

  8:          0          1  IO-APIC-edge      rtc0

  9:      37432      8935  IO-APIC-fasteoi  acpi

 12:        583        314  IO-APIC-edge      i8042

 14:    153436      40608  IO-APIC-edge      ata_piix

 15:          0          0  IO-APIC-edge      ata_piix

 16:  193464016  192967267  IO-APIC-fasteoi  yenta, uhci_hcd:usb3, HDA Intel, i915@pci:0000:00:02.0

 17:          0          0  IO-APIC-fasteoi  uhci_hcd:usb4

 18:          0          0  IO-APIC-fasteoi  ehci_hcd:usb1, uhci_hcd:usb7

 20:        52        13  IO-APIC-fasteoi  ehci_hcd:usb2, uhci_hcd:usb5

 21:      49173      41463  IO-APIC-fasteoi  uhci_hcd:usb6

378:      59591      57294  PCI-MSI-edge      eth0

379:      42039      22510  PCI-MSI-edge      ahci

NMI:          0          0  Non-maskable interrupts

LOC:    4369522    7127494  Local timer interrupts

RES:    321297    489184  Rescheduling interrupts

CAL:    643513    298475  function call interrupts

TLB:      9666      11141  TLB shootdowns

SPU:          0          0  Spurious interrupts

ERR:          4

Is this part of the problem?