Bug 490744

Summary:	tripled idle power draw when using ICC profile on external monitor
Product:	[Plasma] kwin	Reporter:	Timothy <timothyh>
Component:	colour-management	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nate, xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.2
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Display settings with with idle power draw. Left without ICC, right with ICC profile

Description Timothy 2024-07-24 06:35:45 UTC

Created attachment 171947 [details]
Display settings with with idle power draw. Left without ICC, right with ICC profile

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SUMMARY
When using the color-management feature on external monitors, it seems that this causes the idle power draw to increase substantially, making the entire system run hotter overall. This does not happen when using  the built-in laptop screen only. 

STEPS TO REPRODUCE
1.  Connect external Monitor
2.  Select ICC profile in Display settings

OBSERVED RESULT
Idle power draw triples

EXPECTED RESULT
Power draw stays the same


SOFTWARE/OS VERSIONS
Linux: 6.9.9-1
KDE Plasma Version: 6.1.2  
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
The Laptop is a Tuxedo InfinityBook Pro 14 gen 8 with Nvidia 3050 GPU. The bug occurs when running in dedicated GPU mode and with integrated graphics.

Comment 1 Zamundaaa 2024-07-25 11:17:44 UTC

We're missing damage tracking for the shadow buffer, which could be the cause of this.

Comment 2 Zamundaaa 2024-09-19 22:02:59 UTC


*** This bug has been marked as a duplicate of bug 477223 ***