On 11/11/22 09:38, Stephan Althaus wrote:
Hello!

After a little bit of looking around, i think it could be relatated to a bug that occured first with 495.

Solutions are

1) to disable the compositing-Manager withing mate

[org.mate.Marco.general]
compositing-manager=false

or

gsettings set org.mate.Marco.general compositing-manager false

2) a patch for xorg.server. The proposed patch to present_scmd.c could be modified to match present.c in OI-userland...

--- a/present/present_scmd.c    2022-02-08 09:38:39.322128250 +0100
+++ b/present/present_scmd.c    2022-02-08 09:40:30.205857503 +0100
@@ -167,6 +167,9 @@
 {
     if (!screen_priv->info)
         return NULL;
+
+    if (!screen_priv->info->get_crtc)
+        return NULL;

     return (*screen_priv->info->get_crtc)(window);
 }
@@ -205,6 +208,9 @@

     if (!screen_priv->info)
         return;
+
+    if (!screen_priv->info->flush)
+        return;

     (*screen_priv->info->flush) (window);
 }


i will check 1) when i have the time to reboot,
maybe 2) in the next days..


Stephan
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Hello!

I have a running mate session on nvidia 515

I did this:

Disable Composite setting in xorg.conf

Section "Extensions"
    Option "Composite" "Disable"
EndSection

Disable the compositing-Manager withing mate

[org.mate.Marco.general]
compositing-manager=false

gsettings set org.mate.Marco.general compositing-manager false

i started X manually, killed twm an startet mate-session..

On next reboot we will see if it works out-of-the-box with lightdm..


Stephan



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