Newbie here with ATI card

NoOp glgxg at
Sun Nov 11 01:13:59 UTC 2007

On 11/10/2007 03:30 PM, Nelson Montague wrote:
>> Here you go:
>> $ sudo apt-get install read-edid
>> $ sudo get-edid | parse-edid
> Thanks for your help NoOp...
> Here comes the data I extracted with this little package  -but now I
> don't know what does it mean - according to mysituation, if I can use
> my monitor @ 100Hz, 1024x768 ?
> It is 96kHz capable, so it should work...
> What's next?

Punt. See below.

>         Monitor and video card combination does not support DDC1 transfers
>         Monitor and video card combination does not support DDC2 transfers

This is a problem. The combination should at least support DDC2.

>         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 failed
> The EDID data should not be trusted as the VBE call failed
> EDID claims 19 more blocks left
> EDID blocks left is wrong.
> Your EDID is probably invalid.
> parse-edid: EDID checksum failed - data is corrupt. Continuing anyway.
> parse-edid: first bytes don't match EDID version 1 header
> parse-edid: do not trust output (if any).

Just as it says. It's broke (EDID) the the output can't be trusted.

Can you repost the portion of your /etc/X11/xorg.conf file that starts
with: Section "Monitor" to the end of the xorg.conf file?

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