Comment 34 for bug 1870971

After a few restarts, upon successful login (again without the battery charger inserted) the message indicating a problem found on /usr/bin/gdm3 appeared.
These are some data of the report.
I hope it will help resolve the bug soon.

package:
 gdm3.3.34.1-1ubuntu1

problemType:
 crash

title:
 gdm3 crashed with SIGSEGV in g_type_check_instance_cast()

apportversion:
 2.20.11-0ubuntu27.8

amd64

JournalErrors:
 [...]
 hostname kernel: initramfs unpacking failed: decoding failed
 hostname kernel: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter
 hostname kernel: pci 0000:00:00.2: can't derive routing for PCI INT A
 hostname kernel: tmp tmp0: t,p_try_transmit: send(): error -5
 hostname kernel: tmp tmp0: [Firmware Bug]: TPM interrupt not working, polling instead
 hostname kernel: platform eisa.0: EISA: Cannot allocate resource for mainboard

ProcCpuinfoMinimal:
 AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx
 [...]
 power managment: ts ttp tm hwpstate eff_freq_ro [13][14]

ProcStatus:
 name: gdm3
 umask: 0022
 state: S (sleeping)
 Tgid: 828
 Pid: 828
 Speculation_Store_Bypass: thread vulnerable
 voluntary_ctxt_switches: 76
 nonvoluntary_ctxt_switches: 9

ProcVersionSignature:
 Ubuntu 5.4.0-45.49-generic 5.4.55

SegvAnalysis:
 Segfault happened at: ... <g_type_check_instance_cast+26>: mov (%r12),%rax
 PC(...) ok
 source "(%r12) (0x000000001) not located in a known VMA region (needed readable region)!
 destination "%rax" ok

SegvReasin:
 reading NULL VMA

StacktraceTop:
 g_type_check_instance_cast() from /lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? ()
 ?? () from /lib/x86_64-linux-gnu/libffi.so.7
 ?? () from /lib/x86_64-linux-gnu/libffi.so.7
 g_cclosure_marshal_generic () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0