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I had installed the touchscreen on the gpio of my pi 0w and did worked like a charm.

Then I decided to install Xserver, lightdm :

sudo apt install raspberrypi-ui-mods

After what the screen is grey and had just a cursor at the upper left corner and that's it !

I tried several changes in lightm et X11 config files without results, and then atarted to change de /boot/config.txt as follow :

hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt=480 320 60 6 0 0 0
dtparam=spi=on
dtoverlay=ads7846

Here is the log for lightdm :

journalctl _SYSTEMD_UNIT=lightdm.service juin 01 11:31:36 raspi01 lightdm[596]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)

I still have a correct screen out of the HDMI port, with resolution 480 x 320.

So what can I do next ? Thanks.

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