Ben_der
Posts: 3
Joined: Sat Sep 05, 2015 8:07 am

HDMI 21:9 Screen

Sat Sep 05, 2015 8:21 am

Hello everybody!

actually i have an Issue with a 21:9 Screen (LG 25UW55B).
I Want the Screen to be 2560x1080 60 7 0 0 1

I Wrote the following to the confix.txt

Code: Select all

disable_overscan=1
hdmi_ignore_edid=0xa5000080
hdmi_group=2
hdmi_mode=87
hdmi_drive=2
hdmi_cvt=2560 1080 60 7 0 0 1
7 is for Aspect ratio 21:9.

According to this Post it should be Possible:
https://www.reddit.com/r/raspberry_pi/c ... pberry_pi/

Even after reboot the system still remains in Mode 58 (1680x1056)

the System should be capable of doing this :

Code: Select all

hdmi_mode=76   2560x1600       reduced blanking
hdmi_mode=77   2560x1600 60Hz
hdmi_mode=78   2560x1600 75Hz
hdmi_mode=79   2560x1600 85Hz
hdmi_mode=80   2560x1600 120Hz reduced blanking
What am i doing wrong??

Thanks for Help!

Ben_der
Posts: 3
Joined: Sat Sep 05, 2015 8:07 am

Solved: HDMI 21:9 Screen

Mon Sep 07, 2015 6:55 am

Hi there !

Issue is closed.

Board is not capable of higher Modes then [email protected]
Overclock of PixelPipeline necessary;Unsupported.

User avatar
RaTTuS
Posts: 10415
Joined: Tue Nov 29, 2011 11:12 am
Location: North West UK

Re: HDMI 21:9 Screen

Mon Sep 07, 2015 7:51 am

I believe you can get higher resolutions.
I know 4k displays have been done [with some limitation ]
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Ben_der
Posts: 3
Joined: Sat Sep 05, 2015 8:07 am

Re: HDMI 21:9 Screen

Tue Sep 08, 2015 2:31 pm

Will try this

Code: Select all

hdmi_ignore_cec_init=1
hdmi_drive=2
disable_overscan=1

hdmi_ignore_edid=0xa5000080
hdmi_group=2
hdmi_mode=87
hdmi_timings=2560 1 64 64 96 1080 1 3 10 31 0 0 1 60 0 185580000 8


max_framebuffer_width=2560
max_framebuffer_height=1280
framebuffer_width=2560
framebuffer_height=1080

gpu_mem=128
arm_freq=800
gpu_freq=275
sdram_freq=500
hdmi_pixel_freq_limit=400000000
avoid_pwm_pll=1

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