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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870971 Title: [amdgpu] (X)ubuntu 20.04 boots to black screen on Lenovo Ideapad L340-17API when in battery mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1870971/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
