lightdm error on ls1028

[Eddy1]

Hi：

I use lsdk to build the Ubuntu mate image, but there is no desktop. The following error occurs when I run it manually:

root@ubuntu:~# /usr/sbin/lightdm

** (lightdm:4852): WARNING **: 11:49:39.406: Seat type 'xlocal' is deprecated, use 'type=local' instead
Failed to use bus name org.freedesktop.DisplayManager, do you have appropriate permissions?

Could you give some suggestions?

[Pavel]

Is this error message for flex-builder command?

Use the following command sequence for LSDK installing and building under Ubuntu 20:

sudo apt update

sudo apt -y upgrade

sudo apt-get install git

tar xvzf flexbuild_lsdk2108.tgz

source setup.env

flex-builder -i mkrfs -a arm64

flex-builder -c linux -a arm64

1. flex-builder -i mkrfs -r ubuntu:mate -a arm64 //            # generate ubuntu userland, '-r ubuntu:main -a arm64' by default
2. flex-builder -i mkbrfs -a arm64 -r ubuntu:mate 
3. flex-builder -c apps -a arm64 ubuntu:mate -a arm64    # build all apps components
4. flex-builder -i merge-component ubuntu:mate -a arm64  # merge app components into target userland
5. flex-builder -i packrfs ubuntu:mate -a arm64          # pack and compress target userland as .tgz
6. flex-builder -i mkfw -m ls1028ardb -b sd # generate composite firmware_ls1028ardb_uboot_sdboot.img

[Eddy1]

Hi：

Thank you for your reply. I use lsdk2012 to build Ubuntu mate on Ubuntu18.04. Do I need to be on the Ubuntu 20.04 host? In addition, I plan to install xfce4 desktop in Ubuntu main. I use apt get install xfce4 command to install it, and then run "X", but give the following complaints：

MESA-LOADER: failed to open mali-dp (search paths /usr/lib/aarch64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri)
failed to load driver: mali-dp
MESA-LOADER: failed to open kms_swrast (search paths /usr/lib/aarch64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri)
failed to load driver: kms_swrast
MESA-LOADER: failed to open swrast (search paths /usr/lib/aarch64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri)
failed to load swrast driver
couldn't get display device

Is lsdk2012 Ubuntu unable to install the xfce4 desktop? Could you give some suggestions?

[Pavel]

Use Ubuntu 18.04 for LSDK 2012. Use Ubuntu 20.04 for LSDK 2108.

It looks like that xfce4 is not available for Linux installed on the LS1028a board.