Bug 505003

Summary:	Falling back to software rendering with Intel HD520 iGPU (always on Wayland, half the time on X11)
Product:	[Plasma] kwin	Reporter:	Noah <conductornoah123>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	minor	CC:	kde, nate
Priority:	NOR
Version First Reported In:	6.3.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Noah 2025-05-30 09:21:00 UTC

SUMMARY
On the lock screen, user avatar is shown as a square image instead of in a circular border when waking up from sleep.

STEPS TO REPRODUCE
1. In the System Settings, set Screen Locking -> Lock Screen Automatically: 'X' minutes, Lock after waking from sleep is checked; Power Management -> When Inactive: 'Sleep' after 'X' minutes (X minutes is the same in both settings).
2. Wait for automatic suspend
3. Wake up the machine

OBSERVED RESULT
User avatar is shown as a square image without a border on the lock screen

EXPECTED RESULT
User avatar is shown with a circular border

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.14.9-arch1-1
KDE Plasma Version: 6.3.91
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0

ADDITIONAL INFORMATION
I first noticed this in Plasma 6.3.5, then updated to the beta (6.3.91) and am still experiencing this issue.

Comment 1 David Edmundson 2025-05-30 09:40:32 UTC

That typically means we've fallen back to software rendering. 

Are you on an nvidia machine?

Comment 2 Noah 2025-05-30 09:49:19 UTC

I'm running on an Intel HD Graphics 520 iGPU - I don't have a dGPU.
I'm certain that the desktop is running hardware accelerated, although I don't know if the screen locker is any different.

Comment 3 Noah 2025-05-30 09:53:01 UTC

Also want to clarify that this behavior appears only after waking up from and auto-idle suspend. If I manually suspend my laptop, the avatar displays properly.

Comment 4 Bug Janitor Service 2025-06-14 03:47:52 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 5 Noah 2025-06-17 07:02:35 UTC

Sorry, I didn't realize that I was supposed to change the status of the bug report (it's my first time).
Updated status to Reported.

Comment 6 Nate Graham 2025-06-17 18:12:03 UTC

Are you using the Plasma X11 session, or the Wayland session?

Does the issue happen consistently on both session types, or just one?

Can you post your full hardware details? Info Center has a "Copy Details" button you can use to collect these quickly.

Comment 7 Noah 2025-06-18 05:21:28 UTC

(In reply to Nate Graham from comment #6)
> Are you using the Plasma X11 session, or the Wayland session?
Wayland

> Does the issue happen consistently on both session types, or just one?
Every time on Wayland. Reproduces ~50% of the time on X11.

> Can you post your full hardware details? Info Center has a "Copy Details"
> button you can use to collect these quickly.
Operating System: Arch Linux 
KDE Plasma Version: 6.3.91
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.2-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6300U CPU @ 2.40GHz
Memory: 16 GiB of RAM (15.3 GiB usable)
Graphics Processor: Intel® HD Graphics 520
Manufacturer: HP
Product Name: HP EliteBook 850 G3

Comment 8 Nate Graham 2025-06-18 16:17:59 UTC

Sounds GPU driver related. This is likely not a KDE issue, but I'm moving it to KWin since the folks there who have more expertise in this area can finish triaging it and point you in the right direction if it's indeed a driver issue.