I am also facing this issue the logs are as follows:
[ 5.325847] Couldn't get size: 0x800000000000000e
[ 5.325850] MODSIGN: Couldn't get UEFI db list
[ 5.325867] Couldn't get size: 0x800000000000000e
[ 5.325868] MODSIGN: Couldn't get UEFI MokListRT
[ 5.327139] zswap: loaded using pool lzo/zbud
My kernel and ubuntu version is:
Linux kk 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux
kk
description: Notebook
product: 20245 (LENOVO_MT_20245)
vendor: LENOVO
version: Lenovo G500s
serial: 3285914003773
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
configuration: boot=normal chassis=notebook family=IDEAPAD
sku=LENOVO_MT_20245 uuid=3FAFF882-37A5-11E3-A363-201A06349678
*-core
description: Motherboard
product: INVALID
vendor: LENOVO
physical id: 0
version: 31900004Std
serial: CB27477093
slot: Type2 - Board Chassis Location
*-firmware
description: BIOS
vendor: LENOVO
physical id: 0
version: 7BCN36WW(V2.02)
date: 08/28/2013
size: 128KiB
capacity: 4544KiB
capabilities: pci upgrade shadowing cdboot bootselect edd
int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720
int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi
*-cpu
description: CPU
product: Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
serial: To Be Filled By O.E.M.
slot: U3E1
size: 2294MHz
capacity: 2400MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce
cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl
xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx
est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt
tsc_deadline_timer xsave avx f16c lahf_lm cpuid_fault epb pti ssbd ibrs ibpb
stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm
arat pln pts flush_l1d cpufreq
configuration: cores=2 enabledcores=2 threads=4
any workaround will help too
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https://bugs.launchpad.net/bugs/1743908
Title:
MODSIGN: Couldn't get UEFI db list
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