This bug was fixed in the package gnome-software - 3.30.2-0ubuntu3
---------------
gnome-software (3.30.2-0ubuntu3) cosmic; urgency=medium
* debian/patches/0024-shell-search-provider-implement-XUbuntuCancel.patch
- implement XUbuntuCancel to request pending search cancellation from
gnome-shell (LP: #1756826)
-- Robert Ancell <robert.anc...@canonical.com> Thu, 11 Oct 2018
12:25:34 +1300
** Changed in: gnome-software (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1756826
Title:
hangs when remote search provider performs expensive operation
Status in gnome-calculator package in Ubuntu:
Fix Released
Status in gnome-shell package in Ubuntu:
Fix Released
Status in gnome-software package in Ubuntu:
Fix Released
Status in nautilus package in Ubuntu:
Fix Released
Status in gnome-calculator source package in Bionic:
In Progress
Status in gnome-shell source package in Bionic:
In Progress
Status in gnome-software source package in Bionic:
Triaged
Status in nautilus source package in Bionic:
In Progress
Bug description:
[ Impact ]
Doing a search in the shell might lead to unresponsive processes that
are not terminated when the search is cancelled or when the gnome-
shell overlay is closed.
[ Test case for GNOME-Shell and Nautilus ]
1. Run ubuntu session with gnome-shell, and open a system monitor (htop, top,
gnome one)
2. Open gnome shell overlay (hit super, or got to activity)
3. Search for a short string (3 chars let's say) that matches many files you
know you have
4. Close the overlay (press super again, hit escape twice)
5. The nautilus process should stop using CPU once the overlay is closed
[ Test case for GNOME-Shell and GNOME-Calculator ]
1. Run ubuntu session with gnome-shell, and open a system monitor (htop, top,
gnome one)
2. Open gnome shell overlay (hit super, or got to activity)
3. Type "10!!!"
4. Close the overlay (press super again, hit escape twice)
5. The gnome-calculator process should stop using CPU once the overlay is
closed
[ Regression Potential ]
Nautilus search results returned are missing elements when
continuously update the search string, gnome-calculator computations
via the shell might not work as expected.
----
I have a maildir for my mail. My computer's name is "nightingale", and this
name is in the filenames in the maildir. I have a lot of email!
When I search for "tilix" to start a terminal after logging in,
Nautilus goes crazy consuming CPU. This is because I have to type "ti"
to type "tilix" and "ti" is a substring of "nightingale". This is
submitted as a search string to the nautilus search provider and
apparently isn't cancelled when I close the entry - I checked the
GError and it's NULL.
A similar thing happens with the ctrl-f search in nautilus itself.
We talked about this on IRC and I provided some traces and stuff.
Linking to the log to avoid having to fetch those out into files. :-)
https://irclogs.ubuntu.com/2018/03/14/%23ubuntu-desktop.html#t15:58
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