HDMI: OrangePi PC2 show nothing about orangepi_build HOT 2 CLOSED

i found error as below:
[DISP]disp_module_init
[DISP] disp_boot_para_parse,line:347:of_property_read disp.init_disp fail
[DISP] init_disp:0x0
[DISP] boot_disp:0x0

so i have changed source code file: dev_disp.c
`
unsigned int disp_boot_para_parse(const char *name)
{
unsigned int value = 0;
if (of_property_read_u32(g_disp_drv.dev->of_node, name, &value) < 0)
__wrn("of_property_read disp.%s fail\n", name);

pr_info("[DISP] %s:0x%x\n", name, value);

if (strcmp(name,"boot_disp") == 0) {
	value = 0x404;
} else if(strcmp(name,"init_disp") == 0) {
	value = 0x20b0000;
} else if(strcmp(name,"fb_base") == 0) {
    value = 0;
}

pr_info("[DISP4] %s:0x%x\n", name, value);

return value;

}
`

and then install ubuntu desktop:
sudo apt-get install x-window-system-core
sudo apt-get install gdm
sudo apt-get install ubuntu-desktop
sudo reboot

ubuntu desktop can display.

but i don't know why boot para error.

from orangepi_build.

Hi,
I'm getting an identical error, although with Android 7.1.0 on the Nanopi K1 Prime (Allwinner H5). I am trying to add a portrait display mode to the kernel.
Do you know if the values accessed by of_property_read are supposed to be the ones generated by sys_config.fex, or do they come from somewhere else?
I checked and the default sys_config.fex (at least for Nanopi K1) seems to have a [disp] section header rather than a [disp_init] section header; do you think it's a typo? I get the same error, and dmesg does not seem to be logging any of the changes I make to the display parameters when I rebuild the fex.
But this solution is already very helpful, I will try, thank you :)

from orangepi_build.