[Openchrome-users] panel size mis-detected on Elonex webbook

[Alan Bell]

should I make a ticket with the patch? I am a bit hesitant because I am 
fairly sure it would break whatever there is out there with this chipset 
and a genuine 1280x800 screen that gets an index of 7 in 
ViaPanelGetNativeModeFromScratchPad  

Alan.

Xavier Bachelot wrote:
> Alan Bell wrote:
>   
>> this is a repost of something I posted a while back, but I am again
>> interested in an answer to get it working correctly out of the box
>> with Ubuntu Jaunty.
>>
>> I have been working on getting Ubuntu Jaunty to work on the Elonex 
>> webbook laptop, by default the LCD panel does not work at all but the
>>  external VGA port is operational at 1024x768 (which is the native 
>> resolution of the monitor I attached). I compiled the latest from
>> trunk and installed that, still didn't work, but with with a lot of
>> help from schlobinux on IRC I did eventually get it working, it
>> required a small fix to let the driver know that a panel was there
>> http://www.openchrome.org/trac/changeset/597/trunk and a modeline in
>> the xorg.conf to let it know about the 1024x600 resolution of the
>> panel This left it with a rather odd stretched screen on the panel,
>> it was running at 1024x600 but this was stretched such that the top
>> left 820x450 filled the panel. A bit of inspection of Xorg.0.log
>> revealed that it thought the native panel size was 1280x800 so what
>> it was really doing was stretching the 1024x600 resolution out to fit
>> a 1280x800 panel then only displaying 1024x600 of that. The reason it
>> thought the native size was 1280x800 was because 
>> ViaPanelGetNativeModeFromScratchPad in via_panel.c was getting an
>> index of 7, which corresponds to 1280x800 in the array at the top of 
>> via_panel.c I hacked line 49 of via_panel.c to read {1024, 600}, and
>> recompiled. It then worked perfectly. What is a more sensible way to
>> get this to work? clearly my hack would break something else which
>> actually does have a 1280x800 panel.
>>     
>
> I see 2 other possibilities :
> - The value you get from the scratch register is wrong.
> - The correspondance table is wrong and your change is actually
> fixing the table.
>
>   
>> Is there somewhere I can put the 1024x600 modeline so that my
>> xorg.conf can go back to it's almost totally empty state?
>>
>> Alan.
>>
>>     
> Can you post a patch against trunk of your modification, please ?
>
> Regards,
> Xavier
>
>