neutrinolabs
Black screen & cinnamon fallback mode after Debian 11.4 update
I've recently updated my system from Debian 11.3 to 11.4. Unfortunately XRDP stopped working. That is, for a non-sudo user. With my local admin account I can log-in fine, but when I use the normal user, I get a Cinnamon fallback error. The .xsession-errors file is attached below. From the looks of it, it seems like a rights issue, but if I check the Debian 11.4 changelogs, nothing catches my eye in that context. Is there somewhere else I can look for clues?
Xsession: X session started for normaluser at Thu 28 Jul 2022 05:13:22 PM CEST WARNING: tempfile is deprecated; consider using mktemp instead. dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/2558/bus dbus-update-activation-environment: setting DISPLAY=:10.0 localuser:normaluser being added to access control list dbus-update-activation-environment: setting GTK_MODULES=gail:atk-bridge dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting USER=normaluser dbus-update-activation-environment: setting XDG_SESSION_TYPE=x11 dbus-update-activation-environment: setting LD_LIBRARY_PATH=:/usr/local/lib:/packages/lib:/packages/lib/vtk:/usr/local/lib:/packages/lib:/packages/lib/vtk dbus-update-activation-environment: setting HOME=/home/normaluser dbus-update-activation-environment: setting CINNAMON_2D=1 dbus-update-activation-environment: setting GTK_MODULES=gail:atk-bridge dbus-update-activation-environment: setting XRDP_PULSE_SINK_SOCKET=xrdp_chansrv_audio_out_socket_10 dbus-update-activation-environment: setting XRDP_PULSE_SOURCE_SOCKET=xrdp_chansrv_audio_in_socket_10 dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/2558/bus dbus-update-activation-environment: setting PULSE_SCRIPT=/etc/xrdp/pulse/default.pa dbus-update-activation-environment: setting LOGNAME=normaluser dbus-update-activation-environment: setting XDG_SESSION_CLASS=user dbus-update-activation-environment: setting PATH=/home/normaluser/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/packages/bin:/home/localsw/bin dbus-update-activation-environment: setting GTK3_MODULES=xapp-gtk3-module dbus-update-activation-environment: setting XRDP_SOCKET_PATH=/run/xrdp/sockdir dbus-update-activation-environment: setting XDG_RUNTIME_DIR=/run/user/2558 dbus-update-activation-environment: setting DISPLAY=:10.0 dbus-update-activation-environment: setting LANG=en_US.UTF-8 dbus-update-activation-environment: setting UID=2558 dbus-update-activation-environment: setting SHELL=/bin/bash dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting XRDP_SESSION=1 dbus-update-activation-environment: setting GPG_AGENT_INFO=/run/user/2558/gnupg/S.gpg-agent:0:1 dbus-update-activation-environment: setting PWD=/nfs/rtsan02/userdata/home/normaluser dbus-update-activation-environment: setting XDG_DATA_DIRS=/usr/share/gnome:/usr/local/share/:/usr/share/ ** Message: 17:13:22.937: couldn't access control socket: /run/user/2558/keyring/control: No such file or directory ** Message: 17:13:22.938: couldn't access control socket: /run/user/2558/keyring/control: No such file or directory ** Message: 17:13:22.939: couldn't access control socket: /run/user/2558/keyring/control: No such file or directory SSH_AUTH_SOCK=/run/user/2558/keyring/ssh Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0".
** (csd-media-keys:1473): WARNING **: 17:13:23.336: Unable to inhibit keypresses: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0". [cinnamon-settings-daemon-smartcard] Failed to start: no suitable smartcard driver could be found ** Message: 17:13:23.349: Existing monitor config (/home/normaluser/.config/cinnamon-monitors.xml) not found at startup. Looking for legacy configuration (monitors.xml) === xinerama setup Configuration === Clone: false Output: Unknown attached to rdp0 status: on width: 1920 height: 1200 rate: 50 primary: false position: 0 0 === Applying Configuration Configuration === Clone: false Output: Unknown attached to rdp0 status: on width: 1920 height: 1200 rate: 50 primary: true position: 0 0 Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0".
** (csd-color:1464): WARNING **: 17:13:23.414: failed to get edid: unable to get EDID for output Xlib: extension "DPMS" missing on display ":10.0".
** (csd-color:1464): WARNING **: 17:13:23.433: failed to create device: failed to obtain org.freedesktop.color-manager.create-device auth
** (csd-color:1464): WARNING **: 17:13:23.433: could not find device: property match 'XRANDR_name'='rdp0' does not exist ** (csd-color:1464): WARNING **: 17:13:23.434: failed to obtain org.freedesktop.color-manager.create-profile auth
** (csd-color:1464): WARNING **: 17:13:23.439: failed to obtain org.freedesktop.color-manager.create-profile auth
** (csd-color:1464): WARNING **: 17:13:23.444: failed to obtain org.freedesktop.color-manager.create-profile auth
** (csd-color:1464): WARNING **: 17:13:23.448: failed to obtain org.freedesktop.color-manager.create-profile auth
** (csd-color:1464): WARNING **: 17:13:23.453: failed to obtain org.freedesktop.color-manager.create-profile auth
** (csd-power:1436): WARNING **: 17:13:23.454: Failed set DPMS mode: Display is not DPMS capable
** (csd-power:1436): WARNING **: 17:13:23.457: Unable to inhibit lid switch: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied [cinnamon-settings-daemon-smartcard] Failed to start: no suitable smartcard driver could be found Xlib: extension "DPMS" missing on display ":10.0". Xlib: extension "DPMS" missing on display ":10.0". Cinnamon warning: Software rendering detected: llvmpipe (LLVM 11.0.1, 256 bits) Cjs-Message: 17:13:48.305: Profiler is disabled. Not setting up signals. Clutter-Message: 17:13:48.322: Sync method: PRESENTATION TIME
** (light-locker:1707): ERROR **: 17:13:48.463: Environment variable XDG_SESSION_PATH not set. Is LightDM running? Cjs-Message: 17:13:48.509: JS LOG: About to start Cinnamon Cjs-Message: 17:13:48.509: JS LOG: ACTIVATING SOFTWARE RENDERING Cjs-Message: 17:13:48.510: JS LOG: [LookingGlass/error] Cinnamon Software Rendering mode enabled git-annex: Nothing listed in /home/normaluser/.config/git-annex/autostart
** (nemo-desktop:1715): WARNING **: 17:13:48.549: Current gtk theme is not known to have nemo support (Adwaita) - checking...
** (xiccd:1732): WARNING **: 17:13:48.553: EDID is empty
** (xiccd:1732): CRITICAL **: 17:13:48.553: unable to create profile: failed to obtain org.freedesktop.color-manager.create-profile auth
** (xiccd:1732): CRITICAL **: 17:13:48.560: unable to create profile: failed to obtain org.freedesktop.color-manager.create-profile auth
** (xiccd:1732): CRITICAL **: 17:13:48.560: unable to create profile: failed to obtain org.freedesktop.color-manager.create-profile auth
** (xiccd:1732): CRITICAL **: 17:13:48.569: unable to create profile: failed to obtain org.freedesktop.color-manager.create-profile auth
** (xiccd:1732): CRITICAL **: 17:13:48.574: unable to create profile: failed to obtain org.freedesktop.color-manager.create-profile auth
** (xiccd:1732): CRITICAL **: 17:13:48.593: failed to create colord device: failed to obtain org.freedesktop.color-manager.create-device auth
** (nemo-desktop:1715): WARNING **: 17:13:48.639: The theme appears to have no nemo support. Adding some...
(nemo-desktop:1715): GLib-CRITICAL **: 17:13:48.664: g_strstr_len: assertion 'haystack != NULL' failed
** Message: 17:13:48.664: nemo-desktop: session is not cinnamon (checked XDG_SESSION_DESKTOP,DESKTOP_SESSION environment variables.) Applying default behavior
Cjs-Message: 17:13:48.692: JS LOG: [LookingGlass/info] Cinnamon.AppSystem.get_default() started in 180 ms
Cjs-Message: 17:13:48.712: JS LOG: [LookingGlass/info] loading default theme
kdeconnect.core: Could not query capabilities from notifications server
blueman-applet 17.13.48 WARNING PluginManager:148 __load_plugin: Not loading DhcpClient because its conflict has higher priority
blueman-applet 17.13.48 WARNING PluginManager:148 __load_plugin: Not loading PPPSupport because its conflict has higher priority
blueman-applet 17.13.48 ERROR BasePlugin:76 _load : [Errno 13] Permission denied: '/dev/rfkill'
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/blueman/plugins/BasePlugin.py", line 70, in _load
self.on_load()
File "/usr/lib/python3/dist-packages/blueman/plugins/applet/KillSwitch.py", line 61, in on_load
self._fd = os.open('/dev/rfkill', os.O_RDONLY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/rfkill'
blueman-applet 17.13.48 ERROR PluginManager:162 __load_plugin: Failed to load KillSwitch
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/blueman/main/PluginManager.py", line 160, in __load_plugin
inst._load()
File "/usr/lib/python3/dist-packages/blueman/plugins/AppletPlugin.py", line 57, in _load
super()._load()
File "/usr/lib/python3/dist-packages/blueman/plugins/BasePlugin.py", line 70, in _load
self.on_load()
File "/usr/lib/python3/dist-packages/blueman/plugins/applet/KillSwitch.py", line 61, in on_load
self._fd = os.open('/dev/rfkill', os.O_RDONLY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/rfkill'
blueman-applet version 2.1.4 starting
Traceback (most recent call last):
File "/usr/bin/blueman-applet", line 42, in
** (csd-power:1436): CRITICAL : 17:13:49.242: abs_to_percentage: assertion 'max > min' failed
Cjs-Message: 17:13:49.267: JS LOG: [LookingGlass/info] Loaded applet [email protected] in 33 ms
Cjs-Message: 17:13:49.296: JS LOG: [LookingGlass/info] Loaded applet [email protected] in 29 ms
Cjs-Message: 17:13:49.312: JS LOG: NetworkManager is not running, hiding...
Cjs-Message: 17:13:49.447: JS LOG: [LookingGlass/info] Loaded applet [email protected] in 151 ms
Cjs-Message: 17:13:49.447: JS LOG: [LookingGlass/info] AppletManager started in 483 ms
Cjs-Message: 17:13:49.450: JS LOG: [LookingGlass/info] Cinnamon took 941 ms to start
Traceback (most recent call last):
File "/usr/bin/cinnamon-launcher", line 72, in
It could also be something stale in the user account related to Cinnamon, possibly.
Try creating a gash empty non-privileged user and see what that does.
Failing that, comparing the ~/.xsession-errors for the sudo user and the non-sudo user could be informative.
Thanks for the reply. With a new user there is indeed no errors, so it has to be an issue concerning the config files. I've deleted every .file in a testaccount and that got things working again. However, after more carefully selecting which files I should delete, I couldn't figure out what file could be responsible. Do you have any pointers on that?
Not really. I'd start by assuming a single file is the culprit, and using some kind of binary chop. So copy half the files in to the new account, and if that works, copy half the remainder. When it stops working, the file that's responsible is probably in the last lot you've copied, so you can work your way though that to find it.
Sorry for the late response. I've found out this issue has to do with the mesa_shader_cache in the .cache folder of a user. Once we delete it, the problem seems to be solved. However, it will re-occur once a user signs in to a PC with a different Debian version (e.g. 11.2 vs 11.4). Is there someway around this, or do we need to delete the mesa_shader_cache everytime on a log-out just in case?
That's useful information - thanks for sharing it.
Just had a poke around. One workaround might be to set might be to set MESA_SHADER_CACHE_DIR (see here) in /etc/profile.d depending on the Debian version, or even move it to the local disk in a per-user directory under /var or /run (I take it you're using networked home directories).
I also came across this which isn't quite consistent with the link above:-
https://www.phoronix.com/news/Mesa-Shader-Cache-Env-Var
It's possible you may have to set more than one environment variable.
Hope that's useful.