Comment 4 for bug 1825663

it also affects the nvidia 390 driver. startup after entering the unlock key takes ~1 minute. Here are all lines containing some nvidia from /var/sys/syslog:

*Aug 15 15:39:21 proxima systemd-udevd[529]: Process '/bin/systemctl start --no-block nvidia-persistenced.service' failed with exit code 1.
*Aug 15 15:39:21 proxima systemd-udevd[531]: Process '/bin/systemctl start --no-block nvidia-persistenced.service' failed with exit code 1.
*Aug 15 15:39:21 proxima kernel: [ 1.473098] nvidia: loading out-of-tree module taints kernel.
*Aug 15 15:39:21 proxima kernel: [ 1.473104] nvidia: module license 'NVIDIA' taints kernel.
*Aug 15 15:39:21 proxima kernel: [ 1.488375] nvidia: module verification failed: signature and/or required key missing - tainting kernel
*Aug 15 15:39:21 proxima kernel: [ 1.492771] nvidia-nvlink: Nvlink Core is being initialized, major device number 239
*Aug 15 15:39:21 proxima kernel: [ 1.493018] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
*Aug 15 15:39:21 proxima kernel: [ 1.493089] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 390.116 Sun Jan 27 07:21:36 PST 2019 (using threaded interrupts)
*Aug 15 15:39:21 proxima kernel: [ 1.499204] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 390.116 Sun Jan 27 06:30:32 PST 2019
*Aug 15 15:39:21 proxima kernel: [ 1.500254] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
*Aug 15 15:39:21 proxima kernel: [ 1.500255] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 0
*Aug 15 15:39:21 proxima kernel: [ 8.323475] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 236
*Aug 15 15:39:21 proxima kernel: [ 8.771481] caller os_map_kernel_space.part.10+0x113/0x140 [nvidia] mapping multiple BARs
*Aug 15 15:39:21 proxima kernel: [ 9.295043] audit: type=1400 audit(1565876361.508:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe" pid=917 comm="apparmor_parser"
*Aug 15 15:39:21 proxima kernel: [ 9.295045] audit: type=1400 audit(1565876361.508:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe//kmod" pid=917 comm="apparmor_parser"
*Aug 15 15:39:21 proxima kernel: [ 9.468531] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input7
*Aug 15 15:39:21 proxima kernel: [ 9.468570] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input8
*Aug 15 15:39:21 proxima kernel: [ 9.468601] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input9
*Aug 15 15:39:21 proxima kernel: [ 9.468631] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input10
*Aug 15 15:40:21 proxima systemd-udevd[529]: Spawned process '/usr/bin/nvidia-smi' [602] is taking longer than 59s to complete
*Aug 15 15:40:21 proxima systemd-udevd[505]: nvidia: Worker [529] processing SEQNUM=2876 is taking a long time
*Aug 15 15:40:21 proxima kernel: [ 69.065286] caller os_map_kernel_space.part.10+0x113/0x140 [nvidia] mapping multiple BARs

as you can see it's also because of nvidia-smi