I wasn't sure what forum to post this in, so I went for Other Topics. I also had no idea what to title the post because I can only describe what happened, and I'm not 100% sure if all of these problems are related or if I stumbled across multiple unrelated issues. Anyway, here goes:
I was working on my laptop all day yesterday, everything was running flawlessly. I left the laptop on overnight, and I went to use it this morning and all of a sudden everything was crashing, software was frozen, etc. So I tried a hard reboot by toggling the power. When the computer rebooted, I got the errors:
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Jul 28 10:31:14 ralien kernel: [ 0.040532] mce: [Hardware Error]: Machine check events logged
Jul 28 10:31:14 ralien kernel: [ 0.040533] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ee0000000040110a
Jul 28 10:31:14 ralien kernel: [ 0.040538] mce: [Hardware Error]: TSC 0 ADDR fef1ff40 MISC 47880018086
Jul 28 10:31:14 ralien kernel: [ 0.040542] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1532795464 SOCKET 0 APIC 0
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fsck /dev/sda2 -y
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dmesg | grep microcode
[ 0.000000] microcode: microcode updated early to revision 0x84, date = 2018-01-21
[ 0.040380] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1532797760 SOCKET 0 APIC 0 microcode 84
[ 0.040386] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1532797760 SOCKET 0 APIC 0 microcode 84
[ 1.186360] microcode: sig=0x806e9, pf=0x80, revision=0x84
[ 1.186474] microcode: Microcode Update Driver: v2.2.
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sudo apt-get install intel-microcode microcode-ctl
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dmesg | grep microcode
[ 0.000000] microcode: microcode updated early to revision 0x84, date = 2018-01-21
[ 0.040380] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1532797760 SOCKET 0 APIC 0 microcode 84
[ 0.040386] mce: [Hardware Error]: PROCESSOR 0:806e9 TIME 1532797760 SOCKET 0 APIC 0 microcode 84
[ 1.186360] microcode: sig=0x806e9, pf=0x80, revision=0x84
[ 1.186474] microcode: Microcode Update Driver: v2.2.
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inxi -Fxz
System: Host: ralien Kernel: 4.15.0-29-generic x86_64 bits: 64 gcc: 7.3.0
Desktop: Cinnamon 3.8.8 (Gtk 3.22.30-1ubuntu1)
Distro: Linux Mint 19 Tara
Machine: Device: laptop System: Dell product: XPS 13 9360 serial: N/A
Mobo: Dell model: 05JK94 v: A00 serial: N/A
UEFI: Dell v: 1.2.3 date: 12/01/2016
Battery BAT0: charge: 47.0 Wh 97.5% condition: 48.2/60.0 Wh (80%)
model: LGC-LGC7.790 DELL RNP726C status: Discharging
CPU: Dual core Intel Core i5-7200U (-MT-MCP-)
arch: Kaby Lake rev.9 cache: 3072 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10848
clock speeds: max: 3100 MHz 1: 700 MHz 2: 700 MHz 3: 700 MHz
4: 700 MHz
Graphics: Card: Intel HD Graphics 620 bus-ID: 00:02.0
Display Server: x11 (X.Org 1.19.6 )
drivers: modesetting (unloaded: fbdev,vesa)
Resolution: 1920x1080@59.93hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 620 (Kaby Lake GT2)
version: 4.5 Mesa 18.0.5 Direct Render: Yes
Audio: Card Intel Sunrise Point-LP HD Audio
driver: snd_hda_intel bus-ID: 00:1f.3
Sound: Advanced Linux Sound Architecture v: k4.15.0-29-generic
Network: Card-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
driver: ath10k_pci bus-ID: 3a:00.0
IF: wlp58s0 state: up mac: <filter>
Card-2: Atheros usb-ID: 001-002
IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A
Drives: HDD Total Size: 128.0GB (48.2% used)
ID-1: /dev/sda model: TOSHIBA_THNSNK12 size: 128.0GB
Partition: ID-1: / size: 117G used: 58G (53%) fs: ext4 dev: /dev/sda2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 34.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 208 Uptime: 12 min Memory: 2970.7/7859.2MB
Init: systemd runlevel: 5 Gcc sys: 7.3.0
Client: Shell (bash 4.4.191) inxi: 2.3.56