[Openchrome-users] VGA output is disable

[Filip Dvořák]

Hi Xavier,

No the other laptops don`t use openchrome.
But I have tried openchrome version 0.2.906 today. It works.

This setup works with shorter cable.

I`m sure that the resolution is 1366x768.


Dne Wed, 01 Aug 2012 21:52:51 +0200 Xavier Bachelot <xavier at bachelot.org>  
napsal(a):

> Hi Filip,
>
> On 08/01/2012 11:18 AM, Filip Dvo??k wrote:
>>
>> Hello,
>>
>> I have been trying to use openchrome with longer cabel (5 metres).
>> The problem is that randr don`t see the monitor.
>> Cable is OK. I have tried 3 laptops and VESA driver.
>> I can not use VESA becouse VESA don`t know resolution 1366x768.
>>
> I'm not sure to fully understand what you tried, so I have a few  
> questions.
> Are the other laptops all using openchrome ?
> Did this setup work with any of the other laptops ?
> Does this setup works with a standard length VGA cable ?
> Also, the resolution looks weird. Are you sure the native resolution of
> your external screen is 1366x768 ? It looks like a laptop's screen
> resolution.
>
>> It`s also impossible to open CRT(VGA) output without monitor.
>>
>>
>> The last lines in logs are:
>> [    18.967] (II) CHROME(0): ViaDisplayEnableCRT
>> [    21.514] (II) CHROME(0): ViaDisplayDisableCRT
>> [    23.456] (II) CHROME(0): ViaDisplayDisableCRT
>>
>> My question is it possible to switch on CRT manually?
>>
> A quick search on the net turned out that it should be possible to do
> that by manually adding a mode to the output. Something like that :
>
> $ xrandr --addmode VGA1 1366x768
> xrandr --output VGA1 --mode 1366x768
>
> Possibly you might also need to add a modeline before doing the above :
> $ gtf 1366 768 60
>
>   # 1368x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 85.86 MHz
>   Modeline "1368x768_60.00"  85.86  1368 1440 1584 1800  768 769 772 795
>  -HSync +Vsync
>
> $ xrandr --newmode 1366x768 85.86  1368 1440 1584 1800  768 769 772 795
>  -HSync +Vsync
>
>
> Never tried that myself, so your mileage may vary...
>
> Regards,
> Xavier
>
>
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