Desktop freezes refuses input

[Recep GUCLUER]

At random intervals desktop freezes. mouse does not function. Sometimes Alt+Tab works.
I use virtualbox. Sometimes it captures the mouse and dont release it, and it take a few seconds to recognise that.
I release the mouse with rigt Ctrl, that shows to pointer and I can move it.
But click does not work.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.18.0-16.17~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-16-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 21 12:34:51 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Several times a week
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4350/4550] [1002:954f] (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. RV710 [Radeon HD 4350/4550] [1043:0274]
InstallationDate: Installed on 2019-03-16 (4 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic root=UUID=3b8dc91d-1d7d-412f-ba84-ebeb03723557 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/08/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1101
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5G41T-M LX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1101:bd06/08/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5G41T-MLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.2-0ubuntu1~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.2-0ubuntu1~18.04.2
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

[Daniel van Vugt (vanvugt)]

> I release the mouse with rigt Ctrl, that shows to pointer and I can move it. But click does not work.

Does clicking not work on just app windows, or on the gnome shell panels too?

[Recep GUCLUER (rgucluer)]

Mouse only moves. Does not click on any open app window, left or top panels, any area on desktop.
In short does not click anywhere.

[Recep GUCLUER (rgucluer)]

I see some notes on bluetooth in the logs. I fully disabled the bluetooth deamon at the moment. I do not use bluetooth on this machine. Will see if it makes any difference.

[Daniel van Vugt (vanvugt)]

> Mouse only moves. Does not click on any open app window, left or top panels, any area on desktop.
In short does not click anywhere.

If everything including the panels doesn't respond to clicking, but the cursor moves, then that means the gnome-shell process has frozen but Xorg is still working (Xorg moves the cursor).

[Daniel van Vugt (vanvugt)]

If you have added any gnome-shell extensions, please try uninstalling them, reboot and see if the problem goes away.

[Recep GUCLUER (rgucluer)]

Uninstalled: GNOME 3.26 runtime (snap)

GNOME 3.28 runtime (snap) still exists
(I do not know if it is normal to have both of them at the same time. Maybe it is OK, becouse they are snaps.)

via Gnome tweaks
Ubuntu dock : OFF ( Was also OFF before )
Ubuntu appindicators: ON ( Switched to OFF )

Extensions : ON ( Switched to OFF )

Startup Applications
Reminna Applet: Removed
I did not put it there in the first place.

[Recep GUCLUER (rgucluer)]

Uninstalled mplayer.

[Recep GUCLUER (rgucluer)]

System did not freeze since 2019-03-22.

via Gnome tweaks
Extensions : ON
Ubuntu dock : OFF
Ubuntu appindicators: ON

Run system with these settings for 3-4 days without any problem.

Bluetooth is still disabled.

I enable bluetooth now. ( I don't have a bluetooth device on my system. )

Will report in a few days later.

[Recep GUCLUER (rgucluer)]

No freezes. Can be closed. I can not reproduce the freeze.