rampagepi

OK, dont know much on how to provide fake EDID to the kernel. But I used this and it happily working as I wanted now. sudo vim /etc/X11/xorg.conf Section "Device" Identifier "Configured Video Device" EndSection Section "Monitor" Identifier "Configured Monitor" HorizSync 30.0-62.0 VertRefresh 50.0-70.0 EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1920x1080" "1024x768" EndSubSection EndSection Thanks for the help. .. root@rk322x-box `:]x**j-,' --------------- .,+t***********z\<" OS: Armbian bookworm 24.11.0-trunk.222 armv7l ?******************; Host: Generic RK322x Tv Box board '*n` .'`^,;;,^`'. ,cc. Kernel: Linux 6.6.54-current-rockchip -<. .[l Uptime: 6 mins // ^^ ^^ \\ Packages: 714 (dpkg) !^ ^^ ": Shell: bash 5.2.15 'tt}` !~]rj_ ")t/. Display (U2879G6): 1920x1080 @ 50 Hz in 28″ [External] Itttt?' ~~]rr] `{tttt, DE: LXQt \tttttt!""I_]r("""~tttttt1 WM: Xfwm4 (X11) '_tttttttttttt)ftttttttttttti. WM Theme: Breeze \*ztttttttttttttttttttttttttf**[ Theme: Fusion [Qt] l**c)tttttttttttttttttttttttt(z**, Icons: Adwaita [Qt] .z*x.`tttttttttttttttttttttttt.`u*n Cursor: Adwaita (24px) >` (tttttttttttttttttttttt] "I Terminal: /dev/pts/0 ,tttttttttttttttttttttt` CPU: Generic DT based system (4) @ 1.39 GHz ./tttttfttttttttfttttt( GPU: Rockchip rk3228-mali [Integrated] 'I)))(\()(tt))|\()({;' Memory: 272.59 MiB / 977.04 MiB (28%) .~~~~~~~|)~~~~~~~< Swap: 0 B / 488.52 MiB (0%) '[)))))1|()))))))? Disk (/): 1.88 GiB / 6.94 GiB (27%) - ext4 ",,," ",,,^ Disk (/var/log): 6.88 MiB / 46.84 MiB (15%) - ext4 Local IP (end0): 192.168.19.162/24 Locale: en_US.UTF-8

cool, yes adding video=HDMI-A-1:1920x1080M@60D to the kernel command line, does make the boot process after the uboot, know I want to use 1080p resolution and it displayed ok. (need to run mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr after adding that). Now the problem left is when it want to start the login session of lxqt, it again doesn't know the resolution and black screen. On a non-4K monitor lxqt works fine. Guess I need to read the lxqt guide on how to force it to use a lower resolution on any monitor

Hi, how to force set a boot resolution for this system on rockchip rk322x box? on armbian s9xx tv box images, I append this 'video=HDMI-A-1:1920x1080M@60D' to the kernel boot line and this will force the boot resolution to be the desired one, due to its tiny font on a 4k monitor. With the image here for rk322x, there's no uEnv.txt, but a similar armbianEnv.txt, I tried to add 'video=HDMI-A-1:1920x1080M@60D' to be the last line in this file, but it has no effect. my rk322x borad, it will think my 4k monitor HDMI is 5k , or 60hz, actually its only 4k@30Hz on HDMI, the result is it will blackscreen after the uboot output. when this board connected to a Full HD monitor, it outputs fine from start to end .. root@rk322x-box `:]x**j-,' --------------- .,+t***********z\<" OS: Armbian bookworm 24.11.0-trunk.192 armv7l ?******************; Host: Generic RK322x Tv Box board '*n` .'`^,;;,^`'. ,cc. Kernel: Linux 6.6.52-current-rockchip -<. .[l Uptime: 7 mins // ^^ ^^ \\ Packages: 714 (dpkg) !^ ^^ ": Shell: bash 5.2.15 'tt}` !~]rj_ ")t/. Display (U2879G6): 3840x2160 @ 30 Hz in 28″ [External] Itttt?' ~~]rr] `{tttt, Cursor: Adwaita \tttttt!""I_]r("""~tttttt1 Terminal: /dev/pts/0 '_tttttttttttt)ftttttttttttti. CPU: Generic DT based system (4) @ 1.39 GHz \*ztttttttttttttttttttttttttf**[ GPU: Rockchip rk3228-mali [Integrated] l**c)tttttttttttttttttttttttt(z**, Memory: 331.82 MiB / 977.04 MiB (34%) .z*x.`tttttttttttttttttttttttt.`u*n Swap: 0 B / 488.52 MiB (0%) >` (tttttttttttttttttttttt] "I Disk (/): 1.86 GiB / 6.94 GiB (27%) - ext4 ,tttttttttttttttttttttt` Disk (/var/log): 7.38 MiB / 46.84 MiB (16%) - ext4 ./tttttfttttttttfttttt( Local IP (end0): 192.168.19.162/24 'I)))(\()(tt))|\()({;' Locale: en_US.UTF-8 .~~~~~~~|)~~~~~~~< '[)))))1|()))))))? ",,," ",,,^