Re: Monitors requiring interlaced video modes with older Nvidia video cards are out of options in wheezy
On Mon, 25 Apr 2011 22:39:16 -0400 (EDT), Stephen Powell wrote:
> On Mon, 25 Apr 2011 14:32:43 -0400 (EDT), Sven Joachim wrote:
>> On 2011-04-24 22:19 +0200, Stephen Powell wrote:
>>> ...
>>> The same bug can be reproduced by using the following kernel boot parameter:
>>>
>>> video=VGA-1:1024x768@87i
>>>
>>> ...
>>
>> Please add these findings to the bug report.
>
> I will. But I want to do some more experimenting first.
> I rolled up my sleeves and dug in to the kernel source code today.
> One thing I discovered is that the vertical refresh rate for an interlaced
> mode needs to be specified as the full-frame rate, not the half-frame rate.
> Therefore, the corrected version of the above video boot parameter is
>
> video=VGA-1:1024x768@43i
>
> I tried that and got output for the first time. But it was strange-looking
> output. Instead of the expected 128-column by 48-row frame buffer console
> I got a 128-column by 24-row console, occupying the lower half of the screen
> only. Weird. But at least I got output. I'm digging deeper and deeper into
> the source code. Maybe I'll find something.
I found the bug! I'm working on a patch.
--
.''`. Stephen Powell
: :' :
`. `'`
`-
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