Bug 2216932 - Firefox gets into a status where all keystrokes are delayed by 20+ seconds in all windows
Summary: Firefox gets into a status where all keystrokes are delayed by 20+ seconds in...
Keywords:
Status: CLOSED WORKSFORME
Alias: None
Product: Fedora
Classification: Fedora
Component: firefox
Version: 38
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Gecko Maintainer
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-06-23 09:56 UTC by Albert Flügel
Modified: 2023-07-18 08:29 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2023-07-18 08:29:44 UTC
Type: ---
Embargoed:


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Description Albert Flügel 2023-06-23 09:56:26 UTC
When i use firefox, after a while, any key typing (not mouse moving or clicking) gets delayed by 20 seconds or more. No other running program is affected meanwhile (e.g. thunderbird, shell window). The issue can only be fixed by restarting firefox

Reproducible: Always

Steps to Reproduce:
1. start firefox
2. use it for some time, usually longer than 10 minutes

Actual Results:  
For typing, firefox is hardly usable anymore e.g. while reporting a bug in this bugzilla

Expected Results:  
firefox remains usable

firefox-114.0.2-1.fc38.x86_64

Comment 1 Albert Flügel 2023-06-23 09:58:13 UTC
Additional info: firefox' CPU utilization looks normal while the problem is visible. So it should not be busy i guess. Pasting text with the middle mouse button works normally as well. Just typing does not.

Comment 2 Martin Stransky 2023-06-26 08:59:51 UTC
Can you please run on terminal with MOZ_LOG="Widget:5" env variable like:

MOZ_LOG="Widget:5" firefox 2>&1 | grep Key

and check if key events are logged in time or are delayed?
Thanks.

Comment 3 Albert Flügel 2023-07-07 13:41:29 UTC
Cannot reproduce it currently. I have wrapped the firefox program, so i always get key events logged, when firefox is started.
Please feel free to close this issue for now. When it comes back, i'll reopen.

Comment 4 Martin Stransky 2023-07-18 08:29:44 UTC
Okay, Thanks.


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