AM5728: Qt HDMI resolution issue

guan

Part Number: AM5728

Hello,

I am using AM5728 of my custom board, and the martix gui also be displayed on HDMI with 1280x1024 when I connect usb mouse. Then I can run my QT application normally. Without mouse, I also can run my QT app with parameter -platform eglfs, but resolution of HDMI is changed to 1024x768 so the window only can be showed a part. Please help me to modify the resolution of HDMI display when QT with eglfs. BTW, when I kill QT app, the resolution restore to 1280x1024 !

Thanks,

Best Regards,

Guan Qing

over 6 years ago

0 guan over 6 years ago

Prodigy 165 points

I am using rt-linux SDK3.03, kernel : 4.4

0 Krunal Bhargav34 over 6 years ago in reply to guan

TI__Mastermind 44755 points

Hello,

Unfortunately, we do not support SDK3.03 and please refer to our latest SDK. Also, please refer to the following link as a reference for setting HDMI resolution.

Regards,
Krunal

0 guan over 6 years ago in reply to Krunal Bhargav34

Prodigy 165 points

Hi Krunal,

Thanks for your relay. Sorry our customer need Linux kernel 4.4, so we could not use latest SDK. We think two methods to solve this problem. One is that we could run QT with eglfs as my asked, but we must change resolution with 1280x1024 to adapt customer's app. so we should re-setup resolution with eglfs. Another is that we might update or replace Weston with higer 1.11 by ourself. We have successfully run QT app without input device in SDK5.0 by modifying weston.ini with Weston 1.11. But how could I update or replace higer Weston 1.11 in original filesystem? and where could I download the pre-build higher Weston 1.11 to install ?

Please help me, Thanks.

Best Regards,

Guan Qing

0 Krunal Bhargav34 over 6 years ago in reply to guan

TI__Mastermind 44755 points

Hello Guan,

If you would like to replace the Weston version please refer to the following page. For more information on Yocto, please refer to the following pages:
1. http://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Overview_Building_the_SDK.html
2. https://training.ti.com/customizing-yocto-for-production-introduction?context=1135806-1135778

Regards,
Krunal

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AM5728: Qt HDMI resolution issue