Comment 0 for bug 1904337

desktop crashing sometimes with this message (from dmesg)

```
compiz[2768]: segfault at 8 ip 00007f48a463203a sp 00007ffdd41a8d80 error 4 in libunityshell.so[7f48a4536000+345000]
Code: 02 00 00 48 89 93 48 02 00 00 48 85 ff 74 1b e8 9c b6 f5 ff 48 8b 7c 24 28 48 85 ff 74 05 e8 8d b6 f5 ff 48 8b 83 40 02 00 00 <48> 8b 50 08 48 39 50 10 0f 84 1c 01 00 00 4c 8b 32 4d 85 f6 0f 84
```

Seems to be a bug in libunityshell or in some compiz plugin.

Best way to replicate is to install `joystick` and run `ffmvforce test` (or real force feedback device if you have one plugged in), now the desktop crashes. Sometimes other programs (especially if they’re run with Wine) present this behavior. I’ve also tried on liveusb on both Intel and Amd machines with the same result.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: libunity-core-6.0-9 7.5.0+20.04.20200312-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
BootLog: Error: [Errno 13] Permesso negato: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity:Unity7:ubuntu
Date: Sun Nov 15 18:02:24 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo HD Graphics 620 [17aa:5062]
InstallationDate: Installed on 2020-06-02 (166 days ago)
InstallationMedia: Ubuntu Unity 20.04 LTS amd64 "Focal Fossa" (20200528)
MachineType: LENOVO 20HN0013IX
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-53-generic root=UUID=f4fccb8d-474f-4235-bf9d-f2743c46e784 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/28/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: R0IET62W (1.40 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20HN0013IX
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrR0IET62W(1.40):bd06/28/2020:svnLENOVO:pn20HN0013IX:pvrThinkPadX270:rvnLENOVO:rn20HN0013IX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X270
dmi.product.name: 20HN0013IX
dmi.product.sku: LENOVO_MT_20HN_BU_Think_FM_ThinkPad X270
dmi.product.version: ThinkPad X270
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.14.1+20.04.20200211-0ubuntu1
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1