| Summary: | Screensaver process is still running after the screensaver is gone | ||
|---|---|---|---|
| Product: | [Unmaintained] kscreensaver | Reporter: | Nick Stallman <nick> |
| Component: | screensavers | Assignee: | kscreensaver bugs tracking <kscreensaver-bugs-null> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | ahepas1999, alexalexiv, john.everest, m01brv, martin.weidner, mehaase, sbc_hates_spam, wbauer1 |
| Priority: | NOR | ||
| Version: | 4.10.5 | ||
| Target Milestone: | --- | ||
| Platform: | Ubuntu | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
CPU Load due to Screensavers still running
List of kss porcesses associated with the CPU load in the previous example |
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Description
Nick Stallman
2013-07-31 21:33:29 UTC
I have the same problem since upgrade to Kubuntu 13.10. I tried uninstall/reinstall of kscreensaver, but the issue still exists. Any solutions/workarounds? KDELibs Version 4.11.2 Qt Version 4.8.4 Kernel Version 3.11.0-12-generic 64-bit *** Bug 328785 has been marked as a duplicate of this bug. *** Confirmed here... this has been happening since upgrading to Ubuntu 13.10. /home/mhaase $ ps aux | grep kdeasciiquarium | wc -l 24 (Needless to say, I don't have 24 screens. I have 2.) Changed system from 32 bit Kubuntu 13.10 to 64 bit, the bug still persists. KDELibs Version 4.11.3 Qt Version 4.8.4 Kernel Version 3.11.0-15 generic I am suffering the same issue, and I highlight that the background screensaver processes take significant GPU resources, causing degradation of the graphics performance. The GPU load can be tested with intel_gpu_top for intel cards. Before launching the screensaver it only shows 3 counts that reach 100% load level, while the remaining counts show almost zero usage. After launching the screensaver, and getting out of it, the screensaver process may be left in the background, and then intel_gpu_top shows lots of GPU modules being 100% busy, even if the system is standby. The performance of KWin effects and other OpenGL applications remarkably degrades in this case. However, the issue is not specific to intel cards, NVidia cards are affected in the same manner. My KDE version is 4.11.5, KUbuntu 13.10 (In reply to comment #5) > I am suffering the same issue, and I highlight that the background > screensaver processes take significant GPU resources, causing degradation of > the graphics performance. > > The GPU load can be tested with intel_gpu_top for intel cards. Before > launching the screensaver it only shows 3 counts that reach 100% load level, > while the remaining counts show almost zero usage. After launching the > screensaver, and getting out of it, the screensaver process may be left in > the background, and then intel_gpu_top shows lots of GPU modules being 100% > busy, even if the system is standby. The performance of KWin effects and > other OpenGL applications remarkably degrades in this case. > > However, the issue is not specific to intel cards, NVidia cards are affected > in the same manner. > > My KDE version is 4.11.5, KUbuntu 13.10 same here...It happens on nvidia cards also.KDE 4.12.3 kubuntu 13.10 Created attachment 85840 [details]
CPU Load due to Screensavers still running
I ran my system with KDE 4.12.95 with random selection of screensavers purposely left my system come out of screen saver with keyboard action. I repeated this process multiple times and watched to CPU load steadly increase.
Created attachment 85841 [details]
List of kss porcesses associated with the CPU load in the previous example
This shows the list of .kss processes in memory. As the number increase, multiple screen savers are displayed. For example, I might have three KDE and a Clock flashing in and out while the main screen saver is active.
I really enjoy the list of screen savers that are provided. Unfortunately for some time now I have not been able to use them because of the CPU load taken up after my computer has been left on for some time and it has gone in and out of Screen Saver mode. The attached images illustrate what is happening. When I reboot my computer, all the .kss process are gone. Thank you for fixing the problem which kept them in memory on reboot. I have an ASUS R501VM with Intel Core i7-3610QM CPU at 2.3GHz. I hope this helps to have this problem CONFIRMED I may also add that when just a single screensaver process is left to spin in the background, I often have severe graphics corruptions when watching movies or running other fullscreen applications. The screen begins to crazily blink, as if the graphics driver could not decide whether it should show the movie or the screensaver on the visible screen. Isn't this the same as bug#224200? *** This bug has been marked as a duplicate of bug 224200 *** |