F. Addari's questions

I am experiencing weird freeze of Ubuntu 20.04. I cannot move the cursor, audio stops and I have to hard reboot with the power button. I have a Dell Inspiron 15 7501 (+8GB ram installed by myself) since a month or so, and I installed Ubuntu 20.04 with Win10 Home in dual boot as soon as I received the laptop. Everything in Win10 works fine, and also on Ubuntu since yesterday. I have not installed anything in the past few days.

Initially It happened 3 times when having 1 Mozilla tab with Overleaf, some pdfs (2 or 3) and a python3 shell used as a calculator, running nothing. The fourth time I had 3 Mozilla tab and 1 pdf.

I already tried to increase the swap memory from 2Gb to 8Gb as suggested here Ubuntu 20.04 random freeze ups but it didn't work. I post here the link to the system log files retrieved with the command cat /var/log/syslog of the third and fourth freeze:

3rd - https://drive.google.com/file/d/14mukUNN1VoGJjiKXhw29WHauxNjkjspY/view?usp=sharing

4th - https://drive.google.com/file/d/1CBTFliwg8RA96UpeMGsGuuJ3ZBKBdM73/view?usp=sharing

Sorry for the google drive link, I have no idea on how to share this kind of terminal output in a simple way.

Thank you for your help

Francesco

Edit as requested:

free -h
              total        used        free      shared  buff/cache   available
Mem:           15Gi       1,5Gi        12Gi       220Mi       1,4Gi        13Gi
Swap:         8,0Gi          0B       8,0Gi

sysctl vm.swappiness
vm.swappiness = 60

sudo lshw -C memory

PCI (sysfs)  
  *-firmware                
       description: BIOS
       vendor: Dell Inc.
       physical id: 0
       version: 1.3.0
       date: 08/18/2020
       size: 1MiB
       capacity: 24MiB
       capabilities: pci pnp upgrade shadowing cdboot bootselect edd int5printscreen int9keyboard int14serial int17printer acpi usb smartbattery biosbootspecification netboot uefi
  *-cache:0
       description: L1 cache
       physical id: 700
       slot: L1 Cache
       size: 256KiB
       capacity: 256KiB
       capabilities: synchronous internal write-back unified
       configuration: level=1
  *-cache:1
       description: L2 cache
       physical id: 701
       slot: L2 Cache
       size: 1MiB
       capacity: 1MiB
       capabilities: synchronous internal write-back unified
       configuration: level=2
  *-cache:2
       description: L3 cache
       physical id: 702
       slot: L3 Cache
       size: 8MiB
       capacity: 8MiB
       capabilities: synchronous internal write-back unified
       configuration: level=3
  *-memory
       description: System Memory
       physical id: 1000
       slot: System board or motherboard
       size: 16GiB
     *-bank:0
          description: SODIMM DDR4 Synchronous 3200 MHz (0,3 ns)
          vendor: 000000003180
          physical id: 0
          serial: 00000000
          slot: Motherboard
          size: 8GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)
     *-bank:1
          description: SODIMM DDR4 Synchronous 3200 MHz (0,3 ns)
          product: CT8G4SFRA32A.C4FE
          vendor: 859B00000000
          physical id: 1
          serial: E3742A1E
          slot: DIMM B
          size: 8GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)
  *-memory UNCLAIMED
       description: RAM memory
       product: Comet Lake PCH Shared SRAM
       vendor: Intel Corporation
       physical id: 14.2
       bus info: pci@0000:00:14.2
       version: 00
       width: 64 bits
       clock: 33MHz (30.3ns)
       capabilities: pm cap_list
       configuration: latency=0
       resources: iomemory:600-5ff iomemory:600-5ff memory:6023120000-6023121fff memory:6023128000-6023128fff

grep -i swap /etc/fstab
/swapfile                                 none            swap    sw              0       0

ls -al /var/crash
totale 4028
drwxrwsrwt  2 root      whoopsie    4096 nov 24 18:45 .
drwxr-xr-x 14 root      root        4096 lug 31 18:35 ..
-rw-r-----  1 francesco whoopsie 4108506 nov 24 18:45 _usr_bin_seahorse.1000.crash
-rw-r--r--  1 francesco whoopsie       0 nov 24 18:45 _usr_bin_seahorse.1000.upload
-rw-------  1 whoopsie  whoopsie      37 nov 24 18:45 _usr_bin_seahorse.1000.uploaded

sudo dmidecode -s bios-version
1.3.0

I'm quite new to Ubuntu, I've installed 18.04 on my laptop 2 weeks ago. However sometimes, like every couple of days, I get the report "System program problem detected" from apport. I know I can disable it and there are other similar questions, but I'd just like to know if I have to worry about it or not. I post the apport log I got today, but it is always the same log:

ERROR: apport (pid 4610) Sun Mar 1 11:47:38 2020: called for pid 1000, signal 11, core limit 0, dump mode 1

ERROR: apport (pid 4610) Sun Mar 1 11:47:38 2020: executable: /usr/bin/gnome-shell (command line "/usr/bin/gnome-shell")

ERROR: apport (pid 4610) Sun Mar 1 11:47:38 2020: debug: session gdbus call: (true,)

ERROR: apport (pid 4610) Sun Mar 1 11:52:53 2020: wrote report /var/crash/_usr_bin_gnome-shell.121.crash

ERROR: apport (pid 4644) Sun Mar 1 11:52:53 2020: Unhandled exception: Traceback (most recent call last):

File "/usr/share/apport/apport", line 532, in get_pid_info(pid)

File "/usr/share/apport/apport", line 78, in get_pid_info proc_pid_fd = os.open('/proc/%s' % pid, os.O_RDONLY | os.O_PATH | os.O_DIRECTORY)

FileNotFoundError: [Errno 2] No such file or directory: '/proc/1038' ERROR: apport (pid 4644) Sun Mar 1 11:52:53 2020: pid: 4644, uid: 0, gid: 0, euid: 0, egid: 0

ERROR: apport (pid 4644) Sun Mar 1 11:52:53 2020: environment: environ({})

Thank you for your help.

EDIT: As requested by heynnema:

ls -al /var/crash:
total 20516
drwxrwsrwt  2 root whoopsie     4096 mar  2 12:43 .
drwxr-xr-x 14 root root         4096 ago  5  2019 ..
-rw-r-----  1 gdm  whoopsie 20997898 mar  2 12:43 _usr_bin_gnome-shell.121.crash

ls -al ~/.local/share/gnome-shell/extensions:
impossibile accedere a '/home/addari/.local/share/gnome-shell/extensions': File o directory non esistente

Since It is in italian, It means that it cannot access the folder because it does not exist.

free -h
              total        used        free      shared  buff/cache   available
Mem:            11G        1,8G        7,5G        292M        2,2G        9,1G
Swap:          9,3G          0B        9,3G

(Today It happened again, always the same log apart from pid number and date/hour)

EDIT 2:

ls -al /usr/share/gnome-shell/extensions:
total 16
drwxr-xr-x 4 root root 4096 ago  5  2019 .
drwxr-xr-x 6 root root 4096 feb 20 12:09 ..
drwxr-xr-x 3 root root 4096 ago  5  2019 [email protected]
drwxr-xr-x 3 root root 4096 ago  5  2019 [email protected]


ls -al ~/Desktop
drwxr-xr-x  5 addari addari 4096 mar  1 14:56 .
drwxr-xr-x 30 addari addari 4096 mar  2 17:19 ..
drwxr-xr-x  7 addari addari 4096 feb 24 19:05 01tutorial
drwxr-xr-x 10 addari addari 4096 mar  2 12:27 1M_pre_ms_to_wd
-rw-r--r--  1 addari addari  370 mar  1 14:56 note_cartelle
drwxr-xr-x 10 addari addari 4096 mar  2 12:16 V2_1M_pre_ms_to_wd

sudo lshw -C memory: 
*-cache:0                 
   description: L1 cache
   physical id: 2
   slot: L1 Cache
   size: 64KiB
   capacity: 64KiB
   capabilities: synchronous internal write-back data
   configuration: level=1
  *-cache:1
   description: L1 cache
   physical id: 3
   slot: L1 Cache
   size: 64KiB
   capacity: 64KiB
   capabilities: synchronous internal write-back instruction
   configuration: level=1
 *-cache:2
   description: L2 cache
   physical id: 4
   slot: L2 Cache
   size: 512KiB
   capacity: 512KiB
   capabilities: synchronous internal write-back unified
   configuration: level=2
  *-cache:3
   description: L3 cache
   physical id: 5
   slot: L3 Cache
   size: 3MiB
   capacity: 3MiB
   capabilities: synchronous internal write-back unified
   configuration: level=3
  *-memory
   description: System Memory
   physical id: 7
   slot: System board or motherboard
   size: 12GiB
     *-bank:0
      description: SODIMM DDR4 Synchronous 2133 MHz (0,5 ns)
      product: ATF51264HZ-2G3B2   2
      vendor: 4154
      physical id: 0
      serial: 32363448
      slot: ChannelA-DIMM0
      size: 4GiB
      width: 64 bits
      clock: 2133MHz (0.5ns)
     *-bank:1
      description: [empty]
      physical id: 1
      slot: ChannelA-DIMM1
     *-bank:2
      description: SODIMM DDR4 Synchronous 2133 MHz (0,5 ns)
      product: CT8G4SFS824A.C8FDD1
      vendor: 859B
      physical id: 2
      serial: E1238D7A
      slot: ChannelB-DIMM0
      size: 8GiB
      width: 64 bits
      clock: 2133MHz (0.5ns)
     *-bank:3
      description: [empty]
      physical id: 3
      slot: ChannelB-DIMM1
  *-firmware
   description: BIOS
   vendor: LENOVO
   physical id: d
   version: 1KCN28WW
   date: 11/15/2016
   size: 128KiB
   capacity: 6080KiB
   capabilities: pci upgrade shadowing cdboot bootselect edd int5printscreen int9keyboard int14serial int17printer int10video pc98 acpi usb ls120boot zipboot biosbootspecification netboot
  *-memory UNCLAIMED
   description: Memory controller
   product: Sunrise Point-LP PMC
   vendor: Intel Corporation
   physical id: 1f.2
   bus info: pci@0000:00:1f.2
   version: 21
   width: 32 bits
   clock: 33MHz (30.3ns)
   configuration: latency=0
   resources: memory:d1224000-d1227fff

EDIT 3: Something new happened, after leaving the .crash file

ERROR: apport (pid 14161) Mon Mar 2 18:22:06 2020: called for pid 10465, signal 11, core limit 0, dump mode 1

ERROR: apport (pid 14161) Mon Mar 2 18:22:06 2020: executable: /usr/bin/gnome-shell (command line "/usr/bin/gnome-shell")

ERROR: apport (pid 14161) Mon Mar 2 18:22:06 2020: debug: session gdbus call: (true,)

ERROR: apport (pid 14161) Mon Mar 2 18:22:06 2020: apport: report /var/crash/_usr_bin_gnome-shell.121.crash already exists and unseen, doing nothing to avoid disk usage DoS

ERROR: apport (pid 14186) Mon Mar 2 18:22:06 2020: called for pid 10474, signal 6, core limit 18446744073709551615, dump mode 1

ERROR: apport (pid 14186) Mon Mar 2 18:22:06 2020: ignoring implausibly big core limit, treating as unlimited

ERROR: apport (pid 14186) Mon Mar 2 18:22:06 2020: executable: /usr/bin/Xwayland (command line "/usr/bin/Xwayland :1024 -rootless -terminate -accessx -core -listen 4 -listen 5 -displayfd 6")

ERROR: apport (pid 14186) Mon Mar 2 18:22:06 2020: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 14186) Mon Mar 2 18:22:06 2020: debug: session gdbus call:

ERROR: apport (pid 14186) Mon Mar 2 18:22:09 2020: wrote report /var/crash/_usr_bin_Xwayland.121.crash