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I am using two monitors for work. And when I moved aplication rhythmbox
from first to second monitor, the screen session was logout and I have
to login again. After it I found following error by dmesg

>> dmesg
[ 2753.218761] BUG: unable to handle kernel paging request at 000009fffb9d8290
[ 2753.218811] IP: __radix_tree_lookup+0x0/0x130
[ 2753.218826] PGD 0 
[ 2753.218827] P4D 0 

[ 2753.218852] Oops: 0000 [#1] SMP
[ 2753.218865] Modules linked in: ccm pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle xfrm_user xfrm_algo 
xt_addrtype ipt_MASQUERADE br_netfilter nf_nat_masquerade_ipv4 iptable_nat 
nf_nat_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ipt_REJECT 
nf_reject_ipv4 xt_tcpudp bridge stp aufs llc ebtable_filter ebtables 
ip6table_filter ip6_tables iptable_filter binfmt_misc uvcvideo 
videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media 
intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel pcbc aesni_intel snd_hda_codec_hdmi snd_hda_codec_conexant 
arc4 snd_hda_codec_generic aes_x86_64 crypto_simd glue_helper cryptd 
intel_cstate snd_hda_intel joydev snd_hda_codec input_leds iwldvm snd_hda_core
[ 2753.219080]  serio_raw snd_hwdep mac80211 snd_seq_midi snd_seq_midi_event 
snd_rawmidi iwlwifi snd_seq wmi_bmof snd_pcm intel_ips cfg80211 thinkpad_acpi 
nvram mei_me lpc_ich mei shpchp snd_seq_device snd_timer snd soundcore mac_hid 
nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat 
nf_conntrack libcrc32c parport_pc ppdev lp parport ip_tables x_tables autofs4 
hid_generic usbhid hid i915 i2c_algo_bit mxm_wmi drm_kms_helper firewire_ohci 
psmouse syscopyarea sysfillrect firewire_core sysimgblt ahci fb_sys_fops 
libahci e1000e drm sdhci_pci sdhci crc_itu_t ptp pps_core video wmi
[ 2753.219250] CPU: 3 PID: 9728 Comm: Web Content Tainted: G           OE   
4.13.0-17-generic #20-Ubuntu
[ 2753.219277] Hardware name: LENOVO 4384BR2/4384BR2, BIOS 6MET81WW (1.41 ) 
[ 2753.219300] task: ffff8fc0a893ac00 task.stack: ffffa27dc2e10000
[ 2753.219320] RIP: 0010:__radix_tree_lookup+0x0/0x130
[ 2753.219336] RSP: 0000:ffffa27dc2e13cd8 EFLAGS: 00010246
[ 2753.219353] RAX: 0000000000000000 RBX: 000009fffb9d8288 RCX: ffffa27dc2e13ce0
[ 2753.219375] RDX: 0000000000000000 RSI: 0003fffe3f010f91 RDI: 000009fffb9d8288
[ 2753.219397] RBP: ffffa27dc2e13cf0 R08: ffff8fc04cd94000 R09: 00007f95eec25010
[ 2753.219418] R10: 0000000000000083 R11: 00007f95eec84290 R12: 0003fffe3f010f91
[ 2753.219440] R13: 000009fffb9d8280 R14: 0003fffe3f010f91 R15: ffff8fc04cd94000
[ 2753.219463] FS:  00007f9626bed1c0(0000) GS:ffff8fc0bbd80000(0000) 
[ 2753.219487] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2753.219505] CR2: 000009fffb9d8290 CR3: 00000001b618c000 CR4: 00000000000006e0
[ 2753.219527] Call Trace:
[ 2753.219539]  ? radix_tree_lookup_slot+0x22/0x50
[ 2753.219559]  find_get_entry+0x1e/0xd0
[ 2753.219573]  pagecache_get_page+0x2c/0x210
[ 2753.219590]  lookup_swap_cache+0x43/0x90
[ 2753.219605]  do_swap_page+0x95/0x700
[ 2753.219618]  ? do_wp_page+0x157/0x500
[ 2753.219632]  __handle_mm_fault+0x70c/0x1020
[ 2753.219647]  handle_mm_fault+0xb1/0x200
[ 2753.219663]  __do_page_fault+0x24d/0x4d0
[ 2753.219677]  do_page_fault+0x22/0x30
[ 2753.219693]  page_fault+0x28/0x30

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: xorg 1:7.7+19ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
CompizPlugins: No value set for 
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Nov 28 11:04:19 2017
DistUpgraded: 2017-10-03 22:32:45,006 DEBUG icon theme changed, re-reading
DistroCodename: artful
DistroVariant: ubuntu
 virtualbox, 5.1.30, 4.13.0-16-generic, x86_64: installed
 virtualbox, 5.1.30, 4.13.0-17-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] 
(rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Core Processor Integrated Graphics Controller [17aa:215a]
InstallationDate: Installed on 2015-11-01 (757 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] 
failed with exit code 1: Hint: You are currently not seeing messages from other 
users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
MachineType: LENOVO 4384BR2
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-17-generic 
root=/dev/mapper/vg-ubuntu--root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg crash
UpgradeStatus: Upgraded to artful on 2017-10-03 (55 days ago) 10/26/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6MET81WW (1.41 ) 4384BR2
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi:bvnLENOVO:bvr6MET81WW(1.41):bd10/26/2010:svnLENOVO:pn4384BR2:pvrThinkPadT510:rvnLENOVO:rn4384BR2:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: ThinkPad T510 4384BR2
dmi.product.version: ThinkPad T510
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:
version.libdrm2: libdrm2 2.4.83-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.2-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Tue Oct  3 21:30:47 2017
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu1.1
xserver.video_driver: modeset

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Won't Fix

** Tags: amd64 apport-bug artful crash ubuntu wayland-session
Xorg crash - Xwayland
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