Max resolution of Intel Graphics Chipsets

Erwin Rol mailinglists at erwinrol.com
Tue Jul 1 01:30:44 PDT 2008


On Tue, 2008-07-01 at 11:12 +0800, Jin, Gordon wrote:
> Erwin Rol wrote on Tuesday, July 01, 2008 7:55 AM:
> > On Tue, 2008-07-01 at 01:26 +0200, Tomas Carnecky wrote:
> >> Erwin Rol wrote:
> >>> Hello all,
> >>> 
> >>> I am looking for a solution where I can connect two TFT's of
> >>> 1440x900, and display different images on those TFT's.
> >>> 
> >>> Most Intel chipsets support two independent outputs, but it seems
> >>> that the internal framebuffer is the limiting factor here. I would
> >>> need 2880x900 or 1440x1800 (the layout is not important).
> >>> 
> >>> For example, do I understand correct that for example the Intel 915
> >>> chipset does support two outputs of 1440x900 (or even larger), but
> >>> that the internal framebuffer only can be 2048x1536?
> >>> 
> >>> I checked several Intel chipsets and they all seem to be "limited"
> >>> to 2048x1536. Are there Intel chipsets that can do for example
> >>> 2048x2048, so it can fit a 1440x1800 resolution?
> >> 
> >> $ xrandr
> >> Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 4096 x
> >> 1440 ... 
> >> 
> > 
> > Weird the datasheet mentions a maximum resolution of ;
> > - Supports flat panels up to 2048x1536 @ 60 Hz or digital CRT/HDTV at
> > 1920x1080 @ 85 Hz
> 
> This is talking about one output, not frame buffer.
> 
> The framebuffer 2048x2048 can work on your 915. If you need larger frame
> buffer AND 3d (dri), you need 965.
> For this limitation, see
> https://bugs.freedesktop.org/show_bug.cgi?id=10479.
> 
> -Gordon

Everybody thanks for the help, the i915 should do fine for my
application. 

- Erwin 






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