patch: add support for CustomEDID to radeon

[Dave Airlie]

On Fri, Sep 11, 2009 at 1:46 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> 2009/9/10 Csillag Kristof <csillag.kristof at united-consult.hu>:
>> Hi all,
>>
>> As I have mentioned a few days earlier, I have encountered a Samsung
>> 214T monitor,
>> which is unable to properly use DDC when connected via DVI, but works
>> fine via VGA.
>>
>> I could not get it to work with the Radeon driver, but the proprietary
>> NVIDIA driver
>> had an option to force-feed the driver with custom EDID data from a
>> file, instead of DDC,
>> so I could use the monitor with NVIDIA.
>>
>> However, I wanted the Radeon driver, so I have added the same option to
>> the radeon driver.
>> It works for me; if you consider this useful, please add to the official
>> branch.
>>
>>    * * *
>>
>> Here is how I use it:
>>
>> 1. Connect the monitor to the PC using VGA
>> 2. get-edid > /root/Samsung_214T.edid
>> 3. add to xorg.conf:     Option      "CustomEDID"
>> "DVI-0:/root/Samsung_214T.edid"
>> 4. Connect the monitor to the PC using DVI
>> 5. Restart X
>>
>>
>> ... and it work.s
>>
>> As far as I can tell, there is no other way to make this monitor work
>> with this driver,
>> so this is very important to me; however, I am not sure how many people are
>> blessed with such broken hardware, so I can not estimate the real importance
>> of the problem.
>>
>>    * * *
>>
>> Please let me know what do you think!
>
> Great patch!  thanks for doing this.  I've made some small
> improvements to it.  Please test this patch and let me know and I'll
> go ahead and commit it.
>

/me wonders if this could be in the server at all.

Dave.

> Thanks,
>
> Alex
>
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