Hi everybody.
I'm using raspberry pi 5 and I experiencing substantial lag when using XFCE4 over VNC. The desktop environment becomes unresponsive, with noticeable delays in opening applications, typing, and general navigation. This issue persists across multiple VNC clients and is not present when using other desktop environments like LXDE. Everything works fine on the login screen, but after logging into my account it becomes extremely slow.
Notably, if I create a new user account, it works without issues—until LightDM is restarted, after which it becomes extremely slow again.
I suspect the issue is caused by the /etc/X11/xorg.conf.d/99-v3d.conf file. However, when I try to modify that file, LightDM fails to restart—and if I reboot the system, the file gets overwritten back to its default contents.
and also package fbset is installed but:
and there is another variable, xephyr which I don't know what exactly is but I try to replace it by /usr/bin/X and I failed:
I'm using raspberry pi 5 and I experiencing substantial lag when using XFCE4 over VNC. The desktop environment becomes unresponsive, with noticeable delays in opening applications, typing, and general navigation. This issue persists across multiple VNC clients and is not present when using other desktop environments like LXDE. Everything works fine on the login screen, but after logging into my account it becomes extremely slow.
Notably, if I create a new user account, it works without issues—until LightDM is restarted, after which it becomes extremely slow again.
I suspect the issue is caused by the /etc/X11/xorg.conf.d/99-v3d.conf file. However, when I try to modify that file, LightDM fails to restart—and if I reboot the system, the file gets overwritten back to its default contents.
and also package fbset is installed but:
Code:
cat /var/log/Xorg.0.log | grep EE[ 611.868] Current Operating System: Linux rlife 6.12.25+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.12.25-1+rpt1 (2025-04-30) aarch64 (WW) warning, (EE) error, (NI) not implemented, (??) unknown.[ 611.898] (EE) open /dev/fb0: No such file or directory[ 611.945] (II) Initializing extension MIT-SCREEN-SAVERCode:
sudo lightdm --test-mode --debug[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log[+0.00s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=36126[+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/01_debian.conf[+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf.d/99-force-xserver.conf[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf.d/99-logind-fix.conf[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf[+0.00s] DEBUG: Using Xephyr for X servers[+0.00s] DEBUG: Registered seat module local[+0.00s] DEBUG: Registered seat module xremote[+0.00s] DEBUG: Registered seat module unity[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager[+0.00s] DEBUG: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)[+0.00s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ?gio-vfs?[+0.00s] DEBUG: Monitoring logind for seats[+0.00s] DEBUG: New seat added from logind: seat0[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*[+0.00s] DEBUG: Seat seat0 has property CanMultiSession=no[+0.00s] DEBUG: Seat seat0: Starting[+0.00s] DEBUG: Seat seat0: Creating greeter session[+0.01s] DEBUG: Seat seat0: Creating display server of type x[+0.01s] DEBUG: Using VT 7[+0.01s] DEBUG: Seat seat0: Starting local X display on VT 7[+0.01s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log[+0.01s] DEBUG: XServer 0: Writing X server authority to /var/run/lightdm/root/:0[+0.01s] DEBUG: XServer 0: Launching X Server[+0.01s] DEBUG: Launching process 36132: /usr/bin/Xephyr :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch[+0.01s] DEBUG: XServer 0: Waiting for ready signal from X server :0[+0.01s] DEBUG: Acquired bus name org.freedesktop.DisplayManager[+0.01s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0[+0.01s] DEBUG: Loading users from org.freedesktop.Accounts[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1001 added[+0.02s] DEBUG: User /org/freedesktop/Accounts/User1000 added[+0.04s] DEBUG: Process 36132 exited with return value 1[+0.04s] DEBUG: XServer 0: X server stopped[+0.04s] DEBUG: Releasing VT 7[+0.04s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0[+0.04s] DEBUG: Seat seat0: Display server stopped[+0.04s] DEBUG: Seat seat0: Stopping session[+0.04s] DEBUG: Seat seat0: Session stopped[+0.04s] DEBUG: Seat seat0: Stopping display server, no sessions require it[+0.04s] DEBUG: Seat seat0: Stopping; greeter display server failed to start[+0.04s] DEBUG: Seat seat0: Stopping[+0.04s] DEBUG: Seat seat0: Stopped[+0.04s] DEBUG: Required seat has stopped[+0.04s] DEBUG: Stopping display manager[+0.04s] DEBUG: Display manager stopped[+0.04s] DEBUG: Stopping daemon[+0.04s] DEBUG: Exiting with return value 1Statistics: Posted by mahdi155000 — Sun Jun 29, 2025 11:26 pm — Replies 0 — Views 8