Comment 19 for bug 1743908

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