Comment 0 for bug 1665911

I recently updated to the 16.04.2 LTS release and installed the new HWE stack which installed kernel 4.8. Ever since, my machine completely freezes when playing video (eg. Youtube). I have to power off or hard reset using physical buttons to recover. Nothing seems to be written to the logs.

Please let me know how to get additional information to help diagnose the issue.

Thanks.

Release: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11

System: Host: rsk4 Kernel: 4.8.0-36-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Unity 7.4.0 (Gtk 2.24.30) Distro: Ubuntu 16.04 xenial
Machine: Mobo: ASUSTeK model: M5A99FX PRO R2.0 v: Rev 1.xx
           Bios: American Megatrends v: 2501 date: 04/07/2014
CPU: Quad core AMD FX-8350 Eight-Core (-HT-MCP-) cache: 8192 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 32107
           clock speeds: max: 4000 MHz 1: 1400 MHz 2: 1400 MHz 3: 1400 MHz
           4: 1400 MHz 5: 1400 MHz 6: 1400 MHz 7: 1400 MHz 8: 1400 MHz
Graphics: Card: NVIDIA GK106 [GeForce GTX 650 Ti] bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 driver: nvidia
           Resolution: 1920x1080@60.00hz, 1920x1080@59.93hz
           GLX Renderer: GeForce GTX 650 Ti/PCIe/SSE2
           GLX Version: 4.5.0 NVIDIA 378.13 Direct Rendering: Yes
Audio: Card-1 NVIDIA GK106 HDMI Audio Controller
           driver: snd_hda_intel bus-ID: 01:00.1
           Card-2 Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA)
           driver: snd_hda_intel bus-ID: 00:14.2
           Sound: Advanced Linux Sound Architecture v: k4.8.0-36-generic
Network: Card-1: Intel 82541PI Gigabit Ethernet Controller
           driver: e1000 v: 7.3.21-k8-NAPI port: d000 bus-ID: 05:05.0
           IF: eth1 state: up speed: 1000 Mbps duplex: full mac: <filter>
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: b000 bus-ID: 09:00.0
           IF: eth0 state: down mac: <filter>
Drives: HDD Total Size: 740.2GB (42.4% used)
           ID-1: /dev/sda model: SPCC_Solid_State size: 240.1GB temp: 30C
           ID-2: /dev/sdb model: ST500DM002 size: 500.1GB temp: 27C
Partition: ID-1: / size: 34G used: 13G (40%) fs: ext4 dev: /dev/sda1
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 28.0C mobo: 19.4C gpu: 0.0:35C
           Fan Speeds (in rpm): cpu: 0 fan-1: 1308 fan-2: 1028 fan-3: 0
Info: Processes: 284 Uptime: 6 min Memory: 1564.9/32075.1MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.461) inxi: 2.2.35