Public bug reported:
I noticed this bug starting around 14.04 LTS. It has been in every LTS release
since then. I run two Kubuntu machines and they both suffer from this bug.
Both machines use Intel Core technology and have 8Gb of RAM. One machine
(16.04.5 LTS) uses Intel video and the other uses Nvidia (18.04.1 LTS). I have
2 monitors on the Intel machine and three on the Nvidia based. It happens more
often on the Nvidia based system and I have tried various driver versions both
proprietary and open. The problem usually does not show up until the machine
as been running for a couple of days or so. Yes, these machine run 24/7
rebooting only for security updates.
The problem is somewhat hard to describe. An application window will freeze or
stutter. For example Gkrellm, a system monitor, will show a system time of
11:05:22 then bounce back to 11:05:20. It will toggle between these rapidly
until I click on the window or restart the app. Clicking on the window will
unfreeze it for only a few minutes however. I believe the applications are
still running and it's just the display that is effected. Eventually the whole
desktop including Plasma becomes effected and a reboot is necessary.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: bot-comment
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https://bugs.launchpad.net/bugs/1785406
Title:
Random applications window freezes or stutters
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