FireMV 2200 vs CustomEDID

[Csillag Kristof]

Dear all,

It turns out that (on top of the analog vs. digital EDID issue)
I have mixed up the sockets of the cards, and connected the monitor
to the wrong one.

If I connect it to the correct one, is works correctly ith my latest patch!
(I attached it again.) This patch is needed to support forcing digital
output,
despite the analog EDID info, like this:

  Option    "CustomEDID"    "DVI-1:/etc/Samsung_214T.edid:digital"

At least, it works now.

    Kristof


> Csillag Kristof wrote:
>   
>> Adam Jackson wrote:
>>   
>>     
>>> On Tue, 2009-10-06 at 03:38 +0200, Csillag Kristof wrote:
>>>
>>>   
>>>     
>>>       
>>>> Therefore, I have extended the syntax of the CustomEDID option to accept
>>>> commands after the EDID file name, and implemented one command ("digital")
>>>> to override this information in the EDID.
>>>>     
>>>>       
>>>>         
>>> I'm going to bet that what you implemented, won't work.  The radeon
>>> driver in UMS mode, to check whether the monitor is digital, does:
>>>
>>> static Bool
>>> monitor_is_digital(xf86MonPtr MonInfo)
>>> {
>>>     return (MonInfo->rawData[0x14] & 0x80) != 0;
>>> }
>>>
>>> So you need to mangle the actual EDID data itself, not just what the
>>> interpreter decides it says.
>>>   
>>>     
>>>       
>> Thank you for the information; I will look into that.
>>   
>>     
> I have modified the code to mangle the actual EDID data,
> as you suggested. As the result, the detected monitor type
> has changed from 1 (CRT) to 3 (DFP) in the X log, but still
> no picture.
>
> (I have attached the current version of the patch, and the resulting log.)
>   
>>> But even doing that is unlikely to help too much, because it looks like
>>> you're getting utter garbage for the EDID data:
>>> [...]
>>>   
>>> That's not even close to being valid EDID.  Among other things, it
>>> doesn't start with 0x00ffffffffffff00.
>>>   
>>>     
>>>       
> It turns out the memory block supposed to store the EDID data was not
> properly allocated. (The interpreter did not copy the data, just the link.)
> I fixed that, and now the displayed EDID data makes sense.
>
>    * * *
>
> It looks better now, but still, no image on my monitor.
> Do you have any other suggestions?
>
> Thank you for your help again:
>
>     Kristof
>
>   

-------------- next part --------------
A non-text attachment was scrubbed...
Name: force_digital.patch
Type: text/x-patch
Size: 1846 bytes
Desc: not available
URL: <http://lists.x.org/archives/xorg/attachments/20091008/a2bbe42a/attachment.bin>