Public bug reported:

When the NFS share goes dead, it takes about 5 minutes (possibly tcp
timeout?) for the login screen to allow password input.

Steps to reproduce

mount nfs share
open file from share
kill the share server
lock the screen
try to unlock the screen


The share is in no way crucial for system operations as no core directories 
including home are not mounted over nfs

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: unity 7.5.0+19.10.20190924-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-42.34-generic 5.3.18
Uname: Linux 5.3.0-42-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.07.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:07:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  435.21  Sun Aug 25 08:17:57 
CDT 2019
 GCC version:  gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2)
.tmp.unity_support_test.0:
 
ApportVersion: 2.20.11-0ubuntu8.8
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr  2 14:40:57 2020
DistUpgraded: 2019-11-01 12:18:51,504 DEBUG running apport_crash()
DistroCodename: eoan
DistroVariant: ubuntu
GraphicsCard:
 NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03] (rev a1) (prog-if 
00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. GP106 [GeForce GTX 1060 6GB] [1043:85ab]
MachineType: Gigabyte Technology Co., Ltd. AB350-Gaming
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-42-generic 
root=UUID=556540f5-c271-4a31-8207-81a7fcaac401 ro nouveau.blacklist=1
SourcePackage: unity
UpgradeStatus: Upgraded to eoan on 2019-11-01 (153 days ago)
dmi.bios.date: 11/27/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F50a
dmi.board.asset.tag: Default string
dmi.board.name: AB350-Gaming-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF50a:bd11/27/2019:svnGigabyteTechnologyCo.,Ltd.:pnAB350-Gaming:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnAB350-Gaming-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: AB350-Gaming
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2016-03-16T23:17:19.931496
version.compiz: compiz 1:0.9.14.0+19.10.20190918-0ubuntu1
version.libdrm2: libdrm2 2.4.99-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~19.10.3
version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.8-0ubuntu0~19.10.3
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
xserver.bootTime: Sat Mar 28 14:08:42 2020
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 
xserver.version: 2:1.20.5+git20191008-0ubuntu1

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug eoan possible-manual-nvidia-install 
third-party-packages ubuntu

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https://bugs.launchpad.net/bugs/1870355

Title:
  dead NFS shares stop ability to unlock the screen

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