I've been having this problem on my Lenovo ideapad ever since I installed Linux on it. Linux runs very nice and smoothly on this low-spec machine, however, whenever I am watching online video, I can be sure the laptop will freeze at a certain point.
It is rather random; it may happen in a few minutes, hours, or may be the next day, though it will certainly freeze. I was able to reproduce the same problem with Kubuntu 18.04 and 18.10, and with Manjaro Xfce and Manjaro KDE (Currently running Manjaro KDE, though I haven't tested after the last major update that included Plasma 15.6).
When frozen, the system would only work again after a hard-reset, which is rather annoying and leads to data loss at times.
Here is the output of
System: Host: hassan-pc Kernel: 5.1.15-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.1.0 Desktop: KDE Plasma 5.16.2 Distro: Manjaro Linux Machine: Type: Laptop System: LENOVO product: 81D2 v: Lenovo ideapad 330-15ARR serial: <filter> Mobo: LENOVO model: LNVNB161216 v: SDK0J40700 WIN serial: <filter> UEFI: LENOVO v: 7VCN23WW date: 06/08/2018 Battery: ID-1: BAT0 charge: 26.5 Wh condition: 26.5/35.0 Wh (76%) model: LGC L17L2PF0 status: Full CPU: Topology: Quad Core model: AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx bits: 64 type: MT MCP arch: Zen L2 cache: 2048 KiB flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 31952 Speed: 1427 MHz min/max: 1600/2000 MHz Core speeds (MHz): 1: 1369 2: 1457 3: 1367 4: 1366 5: 1367 6: 1366 7: 1368 8: 1366 Graphics: Device-1: AMD Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] vendor: Lenovo driver: amdgpu v: kernel bus ID: 03:00.0 Display: x11 server: X.Org 1.20.5 driver: amdgpu FAILED: ati unloaded: modesetting resolution: 1920x1080~60Hz OpenGL: renderer: AMD RAVEN (DRM 3.30.0 5.1.15-1-MANJARO LLVM 8.0.0) v: 4.5 Mesa 19.1.1 direct render: Yes Audio: Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio vendor: Lenovo driver: snd_hda_intel v: kernel bus ID: 03:00.1 Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: Lenovo driver: snd_hda_intel v: kernel bus ID: 03:00.6 Sound Server: ALSA v: k5.1.15-1-MANJARO Network: Device-1: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter vendor: Lenovo driver: ath10k_pci v: kernel bus ID: 01:00.0 IF: wlp1s0 state: up mac: <filter> Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Lenovo driver: r8168 v: 8.047.01-NAPI port: 2000 bus ID: 02:00.0 IF: enp2s0 state: down mac: <filter> Device-3: Qualcomm Atheros type: USB driver: btusb bus ID: 3-2:3 Drives: Local Storage: total: 931.51 GiB used: 34.55 GiB (3.7%) ID-1: /dev/sda vendor: Seagate model: ST1000LM035-1RK172 size: 931.51 GiB Partition: ID-1: / size: 215.74 GiB used: 34.52 GiB (16.0%) fs: ext4 dev: /dev/sda8 Sensors: System Temperatures: cpu: 42.6 C mobo: N/A gpu: amdgpu temp: 42 C Fan Speeds (RPM): N/A Info: Processes: 235 Uptime: 1d 16h 27m Memory: 3.47 GiB used: 1.86 GiB (53.6%) Init: systemd Compilers: gcc: 9.1.0 Shell: bash v: 5.0.7 inxi: 3.0.34
I am not sure if the problem is related to AMD graphics, or to the Linux kernel or something else (or maybe it can be fixed by some small changes to grub settings?).
Any help is appreciated!
Edit: problem still happens after the latest update with Plasma 15.6