After a new Ubuntu 18.04 installation on a empty drive, when I try to log in the computer freezes. When I log in through tty ( Ctrl+Alt+F2,F3), I can log in normally and perform tasks.
How can I debug what is happening with GNOME?
Also, when I try to shut it down, I get the error:
NMI watchdog: Watchdog detected hard LOCKUP on cpu 4
I have a Dell XPS 15 with NVMe drive.
$ uname -a
Linux kefalonia 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ lshw -C cpu
*-cpu
description: CPU
product: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
vendor: Intel Corp.
physical id: 4c
bus info: cpu@0
version: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
serial: To Be Filled By O.E.M.
slot: U3E1
size: 3709MHz
capacity: 3800MHz
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 pdpe1gb rdtscp constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp cpufreq
configuration: cores=4 enabledcores=4 threads=8
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button and choose from 5 different desktops. The first two Gnome desktops hang when I try them but the bottom option "Unity" desktop works OK.