Can't force 720p on a 4k tv

morgana · 2020-04-05T22:43:46+00:00

I am connecting my N2 to a 4k TV with HDMI and no matter what I change in the config files it always automatically sets the display at 4k resolution and it s...

naitreia

Ok...
It's definitiv a bug inside Batocera why:
I tryed now different displays all in WQHD but different manufacturer!
Some working perfect at 1080p some are running at 1920x1200.

I think it has something todo with display_autodetect function or something like that which is in the official ubuntu os and missing inside batoceras boot.ini:
https://github.com/mdrjr/n2_bootini/blob/master/boot.ini#L6-L7

# Auto Detection of Monitor settings based on your Screen information
setenv display_autodetect "true"

# Enable/Disable CEC
setenv cec "true"

### Normal HDMI Monitors
if test "${display_autodetect}" = "true"; then hdmitx edid; fi
if test "${hdmimode}" = "custombuilt"; then setenv cmode "modeline=${modeline}"; fi
if test "${cec}" = "true"; then setenv cec_enable "hdmitx=cec3f"; fi

Right now i can configure what i want inside the boot.ini or batocera.conf it gets ignored and always the 1920x1200 are used.

Someone here who can help to fix this bug?

Jay

I did wonder why everything looks so good, super hi resolution lol.

naitreia

Yea, and this is also the problem that Batocera sometimes or often freezes me on loadingscreen...
I hope some developer will respond to us i tryd every channel to provide this infos :)

nadenislamarre

the problem is around the boot.ini file, while this is what must force the resolution.
i don't manage to force the resolution too. still analyzing.

you can add display_autodetect or anything that is ubuntu boot.ini while this part is before linux start, it is not related to ubuntu nor batocera.
do you manage to force the resolution on ubuntu ?

nadenislamarre

i don't manage to make the cec working too.

nadenislamarre

for information, the official doc is here : https://wiki.odroid.com/odroid-n2/application_note/software/set_display_mode

nadenislamarre

can you tell which issue issues it causes on the n2 by the way ?

naitreia

nadenislamarre
It is setting the resolution fix on 1920x1200 or did i understand your question wrong?

naitreia

hi, i dont got ubuntu i only found this while im searching for a fix for that...im also playing around with the boot.ini and different options...at the moment when i found something which will fix it i will let you know it trust me

nadenislamarre

can you tell which issue issues it causes on the n2 ?

nadenislamarre

what is not working when in 4k

morgana

nadenislamarre The issue for me is that it slows everything down while it is stuck in 4k. If I hook up to a 1080p TV most N64 games run fast and smooth. When I am hooked up to a 4k TV the N64 games are super slow.

naitreia

i have no 4k i have a WQHD Monitor which runs in the PI version of batocera cool on 1920x1080 on OdroidN2 its hard on 1920x1200.
TheBezelsProject isnt working with that resolution! And i have the feeling sometimes it freezes the start

naitreia

naitreia Another problem is the sound but its not relatet to this i think...Jack isnt working and over HDMI you cant adjust the volume over the menu also navigation sounds not working

naitreia

Hi,
i did some more tests with diferent Monitors and i can say this problem definitiv lets the system often freez on boot!
I did 20 to 30 boots on different monitors and freezes are only happening on the ones with the resolution problem.

Jay

But who wants to run in 4k on an N2, nowhere enough power, 1080p max id say.

naitreia

Hi,

i give up, i dont get it run...
Normaly i would say these options has to be set like the following:

setenv display_autodetect "false"
setenv hdmimode "1080p60hz"
setenv voutmode "hdmi"

I would say this would be correct but it don't work!

morgana

It is a shame because this one bug makes the N2 unusable on 4k televisions for anything but basic SNES or slower emulation. My N64, Dreamcast, and PSX games are all slow and choppy. Oh well. Thank you all for your help!

naitreia

It's not OK to say it is a shame...these guys working at there freetime for us and it is completely for free!
Try to help to fix this problem like me...
I have also no knowledge about development or something like this but i try to fix it...

@nadenislamarre
I tryed now also some stuff in the boot.ini but without success (see file below).
I also tryed to connect over HDMI-DVI and HDMI-Displayport but also without success!

ODROIDN2-UBOOT-CONFIG

#------------------------------------------------------------------------------------------------------
#

HDMI CEC Control

Setup custom options by enable these flags:

Function bit

CEC_FUNC_MASK 0

ONE_TOUCH_PLAY_MASK 1

ONE_TOUCH_STANDBY_MASK 2

AUTO_POWER_ON_MASK 3

STREAMPATH_POWER_ON_MASK 4

CEC_INPUT_MASK 5

ACTIVE_SOURCE_MASK 6

cec_func_config='7f'

#
#------------------------------------------------------------------------------------------------------

#------------------------------------------------------------------------------------------------------
#

HDMI custom mode

You can use this setting to set a custom video mode

modeline "horpixels,verpixels,pixel_clock,hor_freq,ver_freq,hdisp,hsyncstart,hsyncend,htotal,vdisp,

vsyncstart,vsyncend,vtotal,hsync_polarity,vsync_polarity,progress_mode"

Example for 1920x1080p@60hz

modeline='1920,1080,148500,67500,60,1920,2008,2052,2200,1080,1084,1088,1125,1,1,1'
#
#------------------------------------------------------------------------------------------------------

setenv displayopt "hdmimode=1080p60hz logo=osd0,loaded,0x3d800000 vout=1080p60hz,enable"
setenv coreelec "quiet"
setenv consoleopt "console=ttyS0,115200 console=tty0 no_console_suspend"

setenv max_freq_a73 "1800" # 1.8 GHz, default value
setenv max_freq_a53 "1896" # 1.896 GHz, default value
setenv maxcpus "6"

if test "${modeline}" != ""; then setenv cmode "modeline=${modeline}"; fi
if test "${cec_func_config}" != ""; then setenv cec "hdmitx=cec${cec_func_config}"; fi

setenv bootargs "label=BATOCERA ${consoleopt} ${coreelec} ${cmode} loglevel=0 consoleblank=0 vt.global_cursor_default=0 max_freq_a53=${max_freq_a53} max_freq_a73=${max_freq_a73} maxcpus=${maxcpus} ${displayopt} ${cec}"

setenv dtb_loadaddr "0x1000000"
setenv k_addr "0x1100000"
setenv loadaddr "0x1B00000"
setenv initrd_loadaddr "0x3700000"

fatload mmc ${devno}:1 ${dtb_loadaddr} boot/meson-g12b-odroid-n2.dtb
fatload mmc ${devno}:1 0x01080000 boot/linux
fatload mmc ${devno}:1 ${initrd_loadaddr} boot/uInitrd

bootm 0x1080000 ${initrd_loadaddr} ${dtb_loadaddr}

naitreia

@susan34 Hi,
regarding the resolution problem...
I opened a thread inside the official Odroid forum:
https://forum.odroid.com/viewtopic.php?f=181&t=38613&p=290189#p290189
I installed the Ubuntu Mate image and there it is working!
So the developer told me:
"I think Batocera developer should merge the HDMI related driver source codes we made some changes."
I hope that is helping you!
Im there for test to support you!