Hi Danial,

Some more investigation ...

I reverted to Kernel to 5.3.18 ... also installed xserver-xorg-video-intel.
strace for gnome-shell shows no more errors on mouse / touchpad activity
and load remains low ..
rahul@desktophp:~$ sudo strace -c -p 11997
[sudo] password for rahul:
strace: Process 11997 attached
^Cstrace: Process 11997 detached
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 40.36    0.041780           4      8944      7555 recvmsg
 29.46    0.030497           8      3392           poll
 10.36    0.010722           5      2064           write
  9.19    0.009510           8      1091           ioctl
  6.51    0.006742           5      1236           writev
  3.06    0.003163           5       533           getpid
  1.00    0.001038           1       770           read
  0.02    0.000023           2        10           munmap
  0.02    0.000018           0        48        34 stat
  0.01    0.000013           0        66           mprotect
  0.01    0.000013          13         1           restart_syscall
  0.00    0.000000           0         1           close
  0.00    0.000000           0         2           fstat
  0.00    0.000000           0         2           rt_sigprocmask
  0.00    0.000000           0         1           clone
  0.00    0.000000           0         1           fcntl
  0.00    0.000000           0         2           getrusage
  0.00    0.000000           0        31         2 futex
  0.00    0.000000           0         1           openat
------ ----------- ----------- --------- --------- ----------------
100.00    0.103519                 18196      7591 total


top command log is attached ..

it appears that the cause may be in broken Kernel drivers for intel chipset
..

Hope this observation helps !


On Sat, 7 Nov 2020 at 19:49, Rahul Sathe <vu3...@gmail.com> wrote:

> I mean; does 'top' report constant CPU without moving the mouse, or was
> that only with gnome-system-monitor? (bug 1773502)
> -- top reports constant CPU without moving mouse ... and it increases to a
> higher value on Mouse / touchpad activity this is even without Gnome-system
> monitor.
>
> Regards /// Rahul
>
> On Fri, 6 Nov 2020 at 07:40, Daniel van Vugt <1902...@bugs.launchpad.net>
> wrote:
>
>> I mean; does 'top' report constant CPU without moving the mouse, or was
>> that only with gnome-system-monitor? (bug 1773502)
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1902825
>>
>> Title:
>>   High CPU usage just moving the mouse
>>
>> Status in gnome-shell package in Ubuntu:
>>   Incomplete
>>
>> Bug description:
>>   high cpu usage just moving the mouse
>>
>>   removed appindicator extension .. the cpu load is very high.
>>
>>
>>   running strace -c -p  while moving mouse
>>
>>   % time     seconds  usecs/call     calls    errors syscall
>>   ------ ----------- ----------- --------- --------- ----------------
>>    36.74    0.103852         103      1000         8 futex
>>    31.30    0.088469           8     10366      8750 recvmsg
>>    15.53    0.043901          11      3925           poll
>>    10.10    0.028550          10      2776           write
>>     4.33    0.012232           7      1537           writev
>>     1.60    0.004533           4       932           read
>>     0.39    0.001092           3       337           getpid
>>     0.00    0.000001           0         2           getrusage
>>     0.00    0.000001           1         1           restart_syscall
>>     0.00    0.000000           0         4           mprotect
>>   ------ ----------- ----------- --------- --------- ----------------
>>   100.00    0.282631                 20880      8758 total
>>
>>   ProblemType: Bug
>>   DistroRelease: Ubuntu 20.10
>>   Package: gnome-shell 3.38.1-1ubuntu1
>>   ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14
>>   Uname: Linux 5.8.0-26-generic x86_64
>>   ApportVersion: 2.20.11-0ubuntu50
>>   Architecture: amd64
>>   CasperMD5CheckResult: skip
>>   CurrentDesktop: GNOME-Classic:GNOME
>>   Date: Wed Nov  4 10:49:20 2020
>>   DisplayManager: gdm3
>>   RelatedPackageVersions: mutter-common 3.38.1-1ubuntu1
>>   SourcePackage: gnome-shell
>>   UpgradeStatus: No upgrade log present (probably fresh install)
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1902825/+subscriptions
>>
>


** Attachment added: "gnome-shell_5.3.18"
   
https://bugs.launchpad.net/bugs/1902825/+attachment/5432296/+files/gnome-shell_5.3.18

-- 
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1902825

Title:
  High CPU usage just moving the mouse

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1902825/+subscriptions

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