Getting 4K working on OC2




I have some question, how to install xfce on minimal? I have xorg and xfce packages but startx stops with errors, unable to connect to X server…
What is missing?

Manjaro-ARM 18.09 released!

The following packages are needed from the 18.09 Minimal image to get xfce working.

  • xorg-server
  • xorg-xinit
  • xfce4 (group)

Start it with startxfce4


I have both but startxfce4 still same error, unable to connetc…


You sure you are using the 18.09 image?


yes I’m sure Minimal Edition 18.09


Please verify that the following packages are installed (post output of following commands:
pacman -Q xorg-server
pacman -Q xorg-xinit
pacman -Q xf86-video-fbturbo-git

What image did you download exactly?


ODROID C2 Minimal Edition 18.09


xorg-server 1.20.1-1
xorg-xinit 1.4.0-3
xf86-video-fbturbo-git 199.f9a6ed7-4


And you do have CLO output on the screen that’s connected?


yes, I’m using it direct via hdmi.

Manjaro-ARM 18.09 released!

Not quite sure then.
It’s what I needed to do, to get LXQT working on it.


It looks like xorg problem not xfce, maybe something is still missing? or some modules not loading?


Here’s what I install on the LXQT edition, except the device GPU driver, which is handles in the devices section.

Not really anything xorg related missing…


[ 44.650] compiled for 1.20.1, module version = 0.0.2
[ 44.650] ABI class: X.Org Video Driver, version 24.0
[ 44.650] (EE) open /dev/fb0: Permission denied
[ 44.651] (WW) Falling back to old probe method for fbturbo
[ 44.651] (II) Loading sub module “fbdevhw”
[ 44.651] (II) LoadModule: “fbdevhw”
[ 44.651] (II) Loading /usr/lib/xorg/modules/
[ 44.651] (II) Module fbdevhw: vendor=“X.Org Foundation”
[ 44.651] compiled for 1.20.1, module version = 0.0.2
[ 44.651] ABI class: X.Org Video Driver, version 24.0
[ 44.651] (EE) open /dev/fb0: Permission denied
[ 44.651] (EE) No devices detected.


I have some news, it start with sudo startxfce4


Don’t use sudo to start the GUI directly.
Use a display manager instead.

sudo pacman -S lightdm lightdm-gtk-greeter
sudo systemctl enable lightdm


Yes with lighdm is working ok :slight_smile:


But I have another problem, I cant’t select 4K resolution, It will be hard way to get all working.


I might be able to help with this, having had monitor problems of my own. Let’s see…

1• Can we get some system info (there’s a thread for that, Inxi… something like that)?
2• Anything special about the monitor? HdMI, DVI or something else?
3• Any manner of error messages?

System:    Host: manjaro-arm Kernel: 4.18.5-1-MANJARO-ARM aarch64 bits: 64 Console: tty 0 Distro: Manjaro ARM 
Machine:   Type: ARM Device System: Hardkernel ODROID-C2 details: N/A serial: HKC213254DFD7813 
CPU:       Topology: Quad Core model: N/A variant: cortex-a53 bits: 64 type: MCP 
           Speed: N/A min/max: N/A Core speeds (MHz): No speed data found for 4 cores. 
Graphics:  Device-1: meson-gxbb-mali driver: N/A 
           Display: server: N/A driver: fbturbo tty: 238x67 
           Message: Unable to show advanced data. Required tool glxinfo missing. 
Audio:     ARM: No ARM data found for this feature. 
           Sound Server: ALSA v: k4.18.5-1-MANJARO-ARM 
Network:   Device-1: meson-gx-dwmac driver: meson8b_dwmac 
           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 00:1e:xx:xx:c4:93 
Drives:    Local Storage: total: 3.71 GiB used: 2.24 GiB (60.3%) 
           ID-1: /dev/mmcblk1 model: SD04G size: 3.71 GiB 
Partition: ID-1: / size: 3.62 GiB used: 2.24 GiB (61.8%) fs: ext4 dev: /dev/mmcblk1p1 
Sensors:   Message: No sensors data was found. Is sensors configured? 
Info:      Processes: 130 Uptime: 13m Memory: 1.92 GiB used: 292.7 MiB (14.9%) Init: systemd Shell: bash 
           inxi: 3.0.21

this is 4K TV with HDMI, 4K was tested with NVIDIA graphic card and working.
About errors? I’m checking…
Now I have only one resolution available in XFCE config panel 1929x1080, no higher and no lower.