Ryukyu's questions

Update 01/05/2019 :
Switching to Intel and removing Nvidia caused the computer to not freeze for more than 3 days, but unfortunately it again froze two times today. I used @jackw11111 advice, and managed to take a picture of the memory usage through the Terminal when it froze the second time.

What I find strange is that not all the RAM was used when it froze.

Update 23/04/2019 :
Upgrading to 18.10 did not solve the issue. The freezing happened again several times in both Firefox and Google Chrome, as well as in Opera. The last time it happened, I was on the Google Maps website. Strangely, the freezing seems to occur even more than before. It became so disturbing that I only use Ubuntu for offline work, and OS X for the rest.

Any suggestion would be appreciated.

Update 31/03/2019 :
Unfortunately it happened again yesterday and today, even after I disabled hardware acceleration and installed the Nvidia graphic driver. For now, it happened only in Firefox, but that is maybe because I mostly used Firefox. And I cannot open the terminal through the shortcut (Alt+Ctrl+T) during the freezing, even though it otherwise works.

I made a video showing the problem: https://www.youtube.com/watch?v=YZrK1bsnHCo
Yesterday, the freezing in Firefox even happened while I was not watching a video at all, but simply scrolling through the browser search results.

I installed Ubuntu 18.04.2 LTS on my MacBookPro two weeks ago. From time to time (at least once a day generally), while watching a YouTube video, the entire screen freezes, except the audio which keeps looping the sound being played at the time of the crash (like "shshshshshshshsh" or "stustustu" or "vidvidvidvid" I hope you see what I mean). The only thing I can do is force shut down the computer by pressing and holding down the power button for a few seconds.

I have absolutely no idea where this comes from. It happens both on Firefox and Chrome.

Do you have any idea what it could be, how I could prevent that or if there is at least another way to simply force quit YouTube/ Firefox / Chrome (without shutting down the entire computer by pressing the power button a few seconds) and simply restart the browser even though all shortcuts I tried as well as mouse movements did not respond during the crash?

Thanks for your help !

For Aravind:

$ hwinfo --gfxcard
14: PCI 100.0: 0300 VGA compatible controller (VGA)         
  [Created at pci.378]
  Unique ID: VCu0.9RMFrOT84MB
  Parent ID: vSkL.jPq0IMUQb1A
  SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
  SysFS BusID: 0000:01:00.0
  Hardware Class: graphics card
  Model: "nVidia GK107M [GeForce GT 650M Mac Edition]"
  Vendor: pci 0x10de "nVidia Corporation"
  Device: pci 0x0fd5 "GK107M [GeForce GT 650M Mac Edition]"
  SubVendor: pci 0x106b "Apple Inc."
  SubDevice: pci 0x00fc 
  Revision: 0xa1
  Driver: "nouveau"
  Driver Modules: "nouveau"
  Memory Range: 0xc0000000-0xc0ffffff (rw,non-prefetchable)
  Memory Range: 0x90000000-0x9fffffff (ro,non-prefetchable)
  Memory Range: 0xa0000000-0xa1ffffff (ro,non-prefetchable)
  I/O Ports: 0x2000-0x207f (rw)
  Memory Range: 0xc1000000-0xc107ffff (ro,non-prefetchable,disabled)
  IRQ: 47 (557954 events)
  Module Alias: "pci:v000010DEd00000FD5sv0000106Bsd000000FCbc03sc00i00"
  Driver Info #0:
    Driver Status: nvidiafb is not active
    Driver Activation Cmd: "modprobe nvidiafb"
  Driver Info #1:
    Driver Status: nouveau is active
    Driver Activation Cmd: "modprobe nouveau"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #12 (PCI bridge)

31: PCI 02.0: 0300 VGA compatible controller (VGA)
  [Created at pci.378]
  Unique ID: _Znp.RpDAoKcUWbF
  SysFS ID: /devices/pci0000:00/0000:00:02.0
  SysFS BusID: 0000:00:02.0
  Hardware Class: graphics card
  Model: "Intel 3rd Gen Core processor Graphics Controller"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x0166 "3rd Gen Core processor Graphics Controller"
  SubVendor: pci 0x106b "Apple Inc."
  SubDevice: pci 0x00fb
  Revision: 0x09
  Driver: "i915"
  Driver Modules: "i915"
  Memory Range: 0xc1400000-0xc17fffff (rw,non-prefetchable)
  Memory Range: 0xb0000000-0xbfffffff (ro,non-prefetchable)
  I/O Ports: 0x3000-0x303f (rw)
  IRQ: 46 (243 events)
  Module Alias: "pci:v00008086d00000166sv0000106Bsd000000FBbc03sc00i00"
  Driver Info #0:
    Driver Status: i915 is active
    Driver Activation Cmd: "modprobe i915"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

Primary display adapter: #14

$ sudo journalctl -r -p err
-- Logs begin at Fri 2019-03-15 00:04:59 CET, end at Fri 2019-03-29 15:09:01 CET
Mär 29 13:19:35 frieder-MacBookPro kernel: nouveau 0000:01:00.0: msvld: init fai
Mär 29 13:19:35 frieder-MacBookPro kernel: nouveau 0000:01:00.0: msvld: unable t
Mär 29 13:18:17 frieder-MacBookPro bluetoothd[885]: Failed to set mode: Blocked 
Mär 29 13:18:17 frieder-MacBookPro spice-vdagent[1650]: Cannot access vdagent vi
Mär 29 13:18:16 frieder-MacBookPro pulseaudio[1502]: [pulseaudio] backend-ofono.
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
Mär 29 13:18:10 frieder-MacBookPro kernel: nouveau 0000:01:00.0: gr: DATA_ERROR 
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