Software render is in use:
OpenGL: renderer: llvmpipe (LLVM 10.0.0 128 bits) v: 3.3 Mesa 20.0.8 direct 
render: Yes

And there isn't a lot free memory:
Info: Processes: 199 Uptime: 41m Memory: 1.85 GiB used: 891.8 MiB (46.9%) 

** Package changed: linux (Ubuntu) => mesa (Ubuntu)

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https://bugs.launchpad.net/bugs/1889992

Title:
  Ubuntu Focal Fossa freezes spontaneously -- must power off when this
  happens

Status in mesa package in Ubuntu:
  Incomplete

Bug description:
  I just did a fresh first-time install of Ubuntu on a Dell Inspirion 14
  with no modifications apart from installing Canon printer drivers and
  no 3rd party peripherals.  The desktop freezes spontaneously.  When it
  freezes, the display freezes including the mouse pointer, and all
  keystrokes are unresponsive (can't even do ctrl-alt-F3 to get a tty).
  Forced power off is the only possible action.

  I think this is irrelevent, but I'll mention that (I think) the lockup
  only happens when I'm using VLC to play MythTV-served videos from the
  LAN.  Nothing else is running.. not even a browser.  I'm simply
  watching a video and out of the blue it hangs.  After rebooting, I
  play the same video I was watching just before the hang, and finish
  watching without a freeze up.  Which means there's no relation to the
  video data.

  $ inxi -Fxz
  System:    Kernel: 5.4.0-42-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
Desktop: Gnome 3.36.3 
             Distro: Ubuntu 20.04.1 LTS (Focal Fossa) 
  Machine:   Type: Portable System: Dell product: Inspiron 14-3452 v: 4.0.7 
serial: <filter> 
             Mobo: Dell model: 0625M8 v: A00 serial: <filter> UEFI: Dell v: 
4.0.7 date: 04/26/2016 
  Battery:   ID-1: BAT0 charge: 33.6 Wh condition: 33.6/41.4 Wh (81%) model: 
Samsung SD DELL 07G075A status: Full 
  CPU:       Topology: Dual Core model: Intel Celeron N3050 bits: 64 type: MCP 
arch: Airmont rev: 3 L2 cache: 1024 KiB 
             flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 
6400 
             Speed: 1377 MHz min/max: 480/2160 MHz Core speeds (MHz): 1: 1034 
2: 1139 
  Graphics:  Device-1: Intel Atom/Celeron/Pentium Processor 
x5-E8000/J3xxx/N3xxx Integrated Graphics vendor: Dell driver: i915 
             v: kernel bus ID: 00:02.0 
             Display: server: X.Org 1.19.2 driver: i915 resolution: 
1280x800~60Hz 
             OpenGL: renderer: llvmpipe (LLVM 10.0.0 128 bits) v: 3.3 Mesa 
20.0.8 direct render: Yes 
  Audio:     Device-1: Intel Atom/Celeron/Pentium Processor 
x5-E8000/J3xxx/N3xxx Series High Definition Audio vendor: Dell 
             driver: snd_hda_intel v: kernel bus ID: 00:1b.0 
             Sound Server: ALSA v: k5.4.0-42-generic 
  Network:   Device-1: Realtek RTL8723BE PCIe Wireless Network Adapter driver: 
rtl8723be v: kernel port: e000 bus ID: 01:00.0 
             IF: wlp1s0 state: up mac: <filter> 
  Drives:    Local Storage: total: 29.12 GiB used: 8.75 GiB (30.0%) 
             ID-1: /dev/mmcblk0 model: HBG4e size: 29.12 GiB 
  Partition: ID-1: / size: 28.05 GiB used: 8.74 GiB (31.2%) fs: ext4 dev: 
/dev/mmcblk0p2 
  Sensors:   System Temperatures: cpu: 52.0 C mobo: 47.0 C 
             Fan Speeds (RPM): cpu: 3181 
  Info:      Processes: 199 Uptime: 41m Memory: 1.85 GiB used: 891.8 MiB 
(46.9%) Init: systemd runlevel: 5 Compilers: gcc: N/A 
             Shell: bash v: 5.0.17 inxi: 3.0.38

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