ivangrid
Posts: 3
Joined: Tue Oct 16, 2012 10:25 am

Does RPi support resolution of 2560x1440?

Tue Oct 16, 2012 10:29 am

Dears, does anyone tested RPi on 2560x1440? Works?

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5105
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: Does RPi support resolution of 2560x1440?

Tue Oct 16, 2012 10:47 am

It won't. It's not a standard DMT/CEA mode. We won't support anything not in this list:
http://elinux.org/RPi_config.txt
We also have a pixels/second limit which is ~1920x1200@60 which that monitor is likely to exceed.

ivangrid
Posts: 3
Joined: Tue Oct 16, 2012 10:25 am

Re: Does RPi support resolution of 2560x1440?

Tue Oct 16, 2012 10:57 am

Thank you for fast reply.
But in the list there are:
These values are valid if hdmi_group=2 (DMT)
hdmi_mode=77 2560x1600 60Hz
hdmi_mode=78 2560x1600 75Hz
hdmi_mode=79 2560x1600 85Hz
hdmi_mode=80 2560x1600 120Hz reduced blanking

What does it mean? RPi support 2560x1600?

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5105
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: Does RPi support resolution of 2560x1440?

Tue Oct 16, 2012 11:27 am

ivangrid wrote:Thank you for fast reply.
But in the list there are:
These values are valid if hdmi_group=2 (DMT)
hdmi_mode=77 2560x1600 60Hz
hdmi_mode=78 2560x1600 75Hz
hdmi_mode=79 2560x1600 85Hz
hdmi_mode=80 2560x1600 120Hz reduced blanking

What does it mean? RPi support 2560x1600?
No. That is the list of all the standard CEA/DMT modes. Additionally there is a pixel clock limit which means modes bigger than 1920x1200@60 are not supported.

[You could try overclocking the pixel clock with
hdmi_pixel_freq_limit=<freq>
int config.txt, where the default limit is 162000000, but that is untested and unsupported]

mrvn
Posts: 58
Joined: Wed Jan 09, 2013 6:50 pm

Re: Does RPi support resolution of 2560x1440?

Wed Jan 09, 2013 7:05 pm

We also have a pixels/second limit which is ~1920x1200@60 which that monitor is likely to exceed.
How approximate is that? Does 1920x1200@60 work or not?

MfG
Mrvn

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5105
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: Does RPi support resolution of 2560x1440?

Wed Jan 09, 2013 10:31 pm

mrvn wrote:
We also have a pixels/second limit which is ~1920x1200@60 which that monitor is likely to exceed.
How approximate is that? Does 1920x1200@60 work or not?
Reduced blanking form of 1920x1200@60 does work.

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