我的电脑出现随机冻结的问题。多年来，我在 Ubuntu 版本和 Windows 版本中都遇到过这个问题。我目前正在运行 19.04。我在 16.04、Windows 10 和 Windows 7 中都遇到过这个问题。有没有可以用来诊断问题的工具？
Phoronix 输出：
PROCESSOR: Intel Core i7 930 @ 2.79GHz
Core Count: 4
Thread Count: 8
Extensions: SSE 4.2
Cache Size: 8192 KB
Microcode: 0x1d
Scaling Driver: acpi-cpufreq ondemand
GRAPHICS: Gigabyte NVIDIA GeForce GT 610 2GB
Frequency: 810/666MHz
OpenGL: 4.6.0
Display Driver: NVIDIA 390.116
Monitor: SyncMaster
Screen: 1920x1080
MOTHERBOARD: Gigabyte X58A-UD3R
BIOS Version: FA
Chipset: Intel 5520/5500/X58 + ICH10R
Audio: Realtek ALC889
Network: Realtek RTL8111/8168/8411
MEMORY: 6144MB
DISK: 1000GB Western Digital WD10EZEX-08M + 2000GB Western Digital WD20EARX-00P
File-System: ext4
Mount Options: errors=remount-ro relatime rw
Disk Scheduler: MQ-DEADLINE
OPERATING SYSTEM: Ubuntu 19.04
Kernel: 5.0.0-13-generic (x86_64)
Desktop: GNOME Shell 3.32.0
Display Server: X Server 1.20.4
Compiler: GCC 8.3.0
Security: KPTI
+ __user pointer sanitization
+ Full generic retpoline IBPB: conditional IBRS_FW STIBP: conditional RSB filling
+ SSB disabled via prctl and seccomp
+ PTE Inversion; VMX: conditional cache flushes SMT vulnerable
CPU Temperature: 54.00 C CPU Usage (Summary): 12.69 %
GPU Temperature: 49.00 C GPU Usage: 3 %
Memory Usage: 2169 MB System Uptime 26