[Linux-31] Session graphique qui fige avec Libreoffice (Ubuntu)

[Claude MICOUIN <mlnglst AT free.fr>]

Bonsoir.
Lorsque j'utilise Libreoffice, j'ai assez (trop) souvent un freeze de
l'écran (seule la souris peut se déplacer; le clavier est bloqué) suivi
immanquablement d'un plantage de la session KDE et retour à la mire de
connexion. De temps en temps même, la reconnexion, après validation de
l'identifiant et du mot de passe, est impossible (l'image de chargement
du bureau tourne indéfiniment) ce qui oblige à un redémarrage brutal.

Ubuntu 64 bits
Version 18.04.02 LTS Bionic Beaver
4.15.0-50-generic
KDE

Ce problème qui me casse les pieds depuis de nombreux mois (j'avais pas
eu trop le temps de m'en occuper) ne se produit avec aucune autre
application que Libreoffice.

J'ai cherché un peu comme j'ai pu dans les logs (le dernier plantage en
date d'aujourd'hui ayant eu lieu à 20h12) et j'ai trouvé ça dans le
fichier /var/log/kern.log
May 16 20:11:18 Bureau-1 kernel: [ 1614.821579] [drm] GPU HANG: ecode
9:0:0x86dffffd, in Xorg [1312], reason: Hang on rcs0, action: reset

suivi de plusieurs fois :
May 16 20:11:18 Bureau-1 kernel: [ 1614.821584] i915 0000:00:02.0:
Resetting rcs0 after gpu hang

lshw m'indique :
display
             description: VGA compatible controller
             produit: HD Graphics 510
             fabriquant: Intel Corporation
             identifiant matériel: 2
             information bus: pci@0000:00:02.0
             version: 06
             bits: 64 bits
             horloge: 33MHz
             fonctionnalités: pciexpress msi pm vga_controller
bus_master cap_list rom
             configuration: driver=i915 latency=0
             ressources: irq:123 mémoire:f6000000-f6ffffff
mémoire:e0000000-efffffff portE/S:f000(taille=64) mémoire:c0000-dffff

Une idée de soluce ?

Merci.
À +.
Claude MICOUIN


Extrait du fichier /var/log/kern.log
May 16 20:11:01 Bureau-1 kernel: [ 1597.911178] audit: type=1400
audit(1558030261.189:10392): apparmor="ALLOWED" operation="open" profi
le="libreoffice-soffice"
name="/sys/fs/cgroup/cpu,cpuacct/cpu.cfs_period_us" pid=2300
comm=564D20546872656164 requested_mask="r" denied_mask="r" fsuid=1000
ouid=0
May 16 20:11:01 Bureau-1 kernel: [ 1597.911182] audit: type=1400
audit(1558030261.189:10393): apparmor="ALLOWED" operation="open"
profile="libreoffice-soffice"
name="/sys/fs/cgroup/cpu,cpuacct/cpu.shares" pid=2300
comm=564D20546872656164 requested_mask="r" denied_mask="r" fsuid=1000
ouid=0
May 16 20:11:18 Bureau-1 kernel: [ 1614.821579] [drm] GPU HANG: ecode
9:0:0x86dffffd, in Xorg [1312], reason: Hang on rcs0, action: reset
May 16 20:11:18 Bureau-1 kernel: [ 1614.821584] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:11:26 Bureau-1 kernel: [ 1622.812983] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:11:29 Bureau-1 kernel: [ 1625.820894] asynchronous wait on
fence i915:kwin_x11[1493]/1:61c1 timed out
May 16 20:11:29 Bureau-1 kernel: [ 1625.820906] asynchronous wait on
fence i915:kwin_x11[1493]/1:61c1 timed out
May 16 20:11:34 Bureau-1 kernel: [ 1630.844955] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:11:42 Bureau-1 kernel: [ 1638.844903] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:11:50 Bureau-1 kernel: [ 1646.844920] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:11:58 Bureau-1 kernel: [ 1654.844877] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:06 Bureau-1 kernel: [ 1662.844912] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:14 Bureau-1 kernel: [ 1670.812884] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:22 Bureau-1 kernel: [ 1678.812871] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:30 Bureau-1 kernel: [ 1686.812818] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:38 Bureau-1 kernel: [ 1694.812827] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:46 Bureau-1 kernel: [ 1702.812814] i915 0000:00:02.0:
Resetting rcs0 after gpu hang
May 16 20:12:46 Bureau-1 kernel: [ 1703.336711] audit: type=1400
audit(1558030366.613:10394): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336713] audit: type=1400
audit(1558030366.613:10395): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336715] audit: type=1400
audit(1558030366.613:10396): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336717] audit: type=1400
audit(1558030366.613:10397): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336719] audit: type=1400
audit(1558030366.613:10398): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336721] audit: type=1400
audit(1558030366.613:10399): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336723] audit: type=1400
audit(1558030366.613:10400): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
May 16 20:12:46 Bureau-1 kernel: [ 1703.336725] audit: type=1400
audit(1558030366.613:10401): apparmor="ALLOWED" operation="file_perm"
profile="libreoffice-soffice//null-/usr/bin/kdeinit4//null-
/usr/bin/knotify4" pid=3036 comm="knotify4" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none