Re: [PATCH] drm: tegra: Use framebuffer pitch as line stride

[Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>]

On 11/26/2012 08:16 PM, Mark Zhang wrote:
> On 11/27/2012 06:37 AM, Stephen Warren wrote:
>> On 11/22/2012 12:37 PM, Thierry Reding wrote:
>>> Instead of using the stride derived from the display mode, use the pitch
>>> associated with the currently active framebuffer. This fixes a bug where
>>> the LCD display content would be skewed when enabling HDMI with a video
>>> mode different from that of the LCD.
>>
>> This patch certainly doesn't cause any additional issues for me, so:
>>
>> Tested-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
>>
>> Howwever, it still doesn't allow both Cardhu's LCD panel and external
>> HDMI port (1080p) to be active at once. If I boot with both enabled, or
>> boot with just the LCD enabled and hot-plug HDMI, as soon as both heads
>> are active, then some kind of display corruption starts; it looks like a
>> clocking issue or perhaps memory underflow.
> 
> I haven't observed this issue. What kind of display corruption you mean?
> Did it recover after some seconds or the display in LVDS panel was
> always corrupted?
> 
> During my testing, I connected HDMI while booting cardhu and I can see
> the LVDS and HDMI working with no corruptions.

For your viewing pleasure (and playing with my new phone) :-)
http://www.youtube.com/watch?v=ZJxJnONz7DA

The external monitor is 1920x1200 I believe.