Bug 424784 - System hangs when Dolphin is opened
Summary: System hangs when Dolphin is opened
Status: RESOLVED WORKSFORME
Alias: None
Product: dolphin
Classification: Applications
Component: general (show other bugs)
Version: 20.04.1
Platform: Other Linux
: NOR critical
Target Milestone: ---
Assignee: Dolphin Bug Assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-07-29 08:02 UTC by Ann_Rose
Modified: 2020-09-19 04:33 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
ksysguard (159.11 KB, image/png)
2020-08-18 08:27 UTC, Ann_Rose
Details
ksysguard (159.11 KB, image/png)
2020-08-18 08:32 UTC, Ann_Rose
Details
attachment-738-0.html (1.73 KB, text/html)
2020-08-20 10:09 UTC, Ann_Rose
Details

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Description Ann_Rose 2020-07-29 08:02:35 UTC
SUMMARY
My system hangs and is stuck when I open Dolphin. I have to switch off and on the machine again inorder to make the system usable.

STEPS TO REPRODUCE
1. Simply open Dolphin
2. 
3. 

OBSERVED RESULT
System hangs down and becomes unusable, I am able to use the machine only if it is restarted.Also machine very slow .

EXPECTED RESULT

SOFTWARE/OS VERSIONS

Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-42-generic
OS Type: 64-bit
Processors: 4 × Intel® Core™ i3-2350M CPU @ 2.30GHz
Memory: 2.8 GiB of RAM


ADDITIONAL INFORMATION
Comment 1 Julian Steinmann 2020-08-03 17:21:05 UTC
Hi, I suspect that the thumbnailing feature of Dolphin might take up a lot of RAM (given that you only have 2.8 GiB, that is not surprising) which could lead to an unresponsive system. Could you check in the system monitor (e.g. ksysguard) whether that is true or not? Thanks :)
Comment 2 Bug Janitor Service 2020-08-18 04:33:09 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Ann_Rose 2020-08-18 08:27:33 UTC
Created attachment 130960 [details]
ksysguard

ksysguard
Comment 4 Ann_Rose 2020-08-18 08:32:51 UTC
Created attachment 130961 [details]
ksysguard
Comment 5 Ann_Rose 2020-08-18 08:34:59 UTC

Hello,
Thank you for your response. I am attaching the screenshot pls check. My system has also become very slow after installing Kubuntu.
Comment 6 Ann_Rose 2020-08-18 08:45:41 UTC
needed details updated
Comment 7 Julian Steinmann 2020-08-18 19:57:16 UTC
Thank you for your follow-up. It seems like the problem lies not within Dolphin but Baloo, our file indexer. Please try the following steps:
1. Open System Settings
2. Go to "Search"
3. Untick "Activate file indexing" (might be called slightly differently)
4. Restart your system

This will deactivate Baloo. This means that some features (searching in file content for example) will not work anymore, but for a computer like yours that doesn't have a lot of memory, it makes sense to disable Baloo. Please report back if this helps or if the system still hangs when you open Dolphin.
(Oh, and you don't have to change the status of the bug report - we'll do that for you once you answer.)
Comment 8 Ann_Rose 2020-08-19 01:22:11 UTC
I have disabled the file search option, is that what you meant? It shows : file search enables you to quickly locate all you files based on your content. I cannot see one with the name Activate file Indexing
Comment 9 Ann_Rose 2020-08-19 01:48:42 UTC
Also, I could see the following processes running on my system at startup:
```
   3616    20   0  362536  10076   4448 S   0.3   0.3   0:01.13 /usr/bin/akonadi_akonotes_resource --identifier akonadi_akonotes_resource_0                                             
   3619     20   0  361680   8680   4308 S   0.3   0.3   0:00.62 /usr/bin/akonadi_contacts_resource --identifier akonadi_contacts_resource_0                                             
   3627     20   0  436036  10620   5776 S   0.3   0.4   0:01.01 /usr/bin/akonadi_maildispatcher_agent --identifier akonadi_maildispatcher_agent                                         
   3632     20   0 1037640  23432   3332 S   0.3   0.8   0:01.11 /usr/bin/akonadi_mailfilter_agent --identifier akonadi_mailfilter_agent                                                 
   3637     20   0  521988  12576   6332 S   0.3   0.4   0:01.14 /usr/bin/akonadi_notes_agent --identifier akonadi_notes_agent 
  844 root      20   0  784720  60728  48160 S   2.3   2.1   4:26.87 /usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{4677a426-3914-4763-97f5-92dec7e9e9bb} -background none -noreset + 
   1730     20   0 3135212  34524  26480 S   2.3   1.2   3:31.53 /usr/bin/kwin_x11 -session 1035032e2ac261000159474571400000011810008_1597766823_327575
   1721    20   0  276392   6520   5632 S   0.3   0.2   0:00.99 /usr/bin/ksmserver                                                                                                      
      1745     20   0 2472512 147196  81952 S   1.3   5.0   0:59.15 /usr/bin/plasmashell  
     5186 root      20   0       0      0      0 I   1.0   0.0   0:00.83 [kworker/u16:0-phy0]
      1791    20   0  403400  11148   9652 S   0.3   0.4   0:01.04 /usr/lib/x86_64-linux-gnu/libexec/org_kde_powerdevil   
    1821     20   0    7216   2832   2428 S   0.3   0.1   0:00.13 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3  
                1 root      20   0  167472   5780   3892 S   0.0   0.2   0:01.89 /sbin/init splash                                                                                                                                                                                                                                                                                                                                                                        
```.. 
Can you tell me whether they are mandatory for system functioning ? Can I disable them , if so how, so that I can free up some memory if applicable..?
Comment 10 Julian Steinmann 2020-08-19 09:11:48 UTC
Right, this was only recently changed, in your version it was still called only file search. You haven't said if that helped or not, but I assume it didn't. Is that correct?

Regarding startup: you can uninstall Akonadi, but this will also remove KMail, KOrganizer and a few other PIM applications. If you don't use these, that would be a good option. The other applications are essential and shouldn't be removed unless you really know what you are doing.
Comment 11 Ann_Rose 2020-08-20 10:09:05 UTC
Created attachment 131036 [details]
attachment-738-0.html

Thanks for your reply

On Wed, 19 Aug, 2020, 2:41 pm Julian Schraner, <bugzilla_noreply@kde.org>
wrote:

> https://bugs.kde.org/show_bug.cgi?id=424784
>
> Julian Schraner <mail@xyquadrat.ch> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>          Resolution|---                         |WAITINGFORINFO
>              Status|REOPENED                    |NEEDSINFO
>
> --- Comment #10 from Julian Schraner <mail@xyquadrat.ch> ---
> Right, this was only recently changed, in your version it was still called
> only
> file search. You haven't said if that helped or not, but I assume it
> didn't. Is
> that correct?
>
> Regarding startup: you can uninstall Akonadi, but this will also remove
> KMail,
> KOrganizer and a few other PIM applications. If you don't use these, that
> would
> be a good option. The other applications are essential and shouldn't be
> removed
> unless you really know what you are doing.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
> You reported the bug.
Comment 12 Bug Janitor Service 2020-09-04 04:33:08 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 13 Bug Janitor Service 2020-09-19 04:33:11 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!