Arch Linux

fubar0

Member

Registered: 2009-10-05

Posts: 18

Hardware serial number of LCD

Hi,

I would like to find out a hardware specific identifier (serial number) of my T400 laptop's LCD.

I already tried
lshw -C display
but this shows only info on the display *controllers*, not the display itself.

Thanks in advance

chpln

Member

From: Australia

Registered: 2009-09-17

Posts: 361

Re: Hardware serial number of LCD

Best source of information I could find was: read-edid.

I'm able to retrieve details of the display in my T60 via:

$ parse-edid /sys/class/drm/card0-LVDS-1/edid

However, the serial number is not provided.  I'm not sure of a way to obtain it.

Last edited by chpln (2009-10-05 13:37:11)

fubar0

Member

Registered: 2009-10-05

Posts: 18

Re: Hardware serial number of LCD

With read-edid installed, I was able to retrieve info on my monitor, but unfortunately no serial number.

get-edid | parse-edid

I didn't quite get how you figured out what file to pass to parse-edit, so i just used get-edid piped through parse-edid, as suggested in the man pages.

$ get-edid | parse-edid
parse-edid: parse-edid version 2.0.0
get-edid: get-edid version 2.0.0

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
        Function supported
        Call successful

        VBE version 300
        VBE string at 0x11100 "Intel(r)Cantiga Graphics Chip Accelerated VGA BIOS"

VBE/DDC service about to be called
        Report DDC capabilities

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
        Function supported
        Call successful

        Monitor and video card combination does not support DDC1 transfers
        Monitor and video card combination supports DDC2 transfers
        0 seconds per 128 byte EDID block transfer
        Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
        Read EDID

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
        Function supported
        Call successful

parse-edid: EDID checksum passed.

        # EDID version 1 revision 3
Section "Monitor"
        # Block type: 2:0 3:f
        # Block type: 2:0 3:fe
        Identifier "LEN:3640"
        VendorName "LEN"
        ModelName "LEN:3640"
        # Block type: 2:0 3:f
        # Block type: 2:0 3:fe
        # DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes

        Mode    "1440x900"      # vfreq 59.998Hz, hfreq 55.558kHz
                DotClock        101.560000
                HTimings        1440 1488 1520 1828
                VTimings        900 903 909 926
                Flags   "-HSync" "-VSync"
        EndMode
        Mode    "1440x900"      # vfreq 50.009Hz, hfreq 51.309kHz
                DotClock        86.610000
                HTimings        1440 1488 1520 1688
                VTimings        900 903 909 1026
                Flags   "-HSync" "-VSync"
        EndMode
        # Block type: 2:0 3:f
        # Block type: 2:0 3:fe
EndSection