Bug 1902257

Summary:	System hangs when gnome-settings launched
Product:	Red Hat Enterprise Linux 8	Reporter:	Mark Pearson <mpearson>
Component:	gnome-settings-daemon	Assignee:	Carlos Garnacho <cgarnach>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	8.3	CC:	bberg
Target Milestone:	rc
Target Release:	8.3
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2021-02-04 13:51:05 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:
Bug Depends On:
Bug Blocks:	1881123

Description Mark Pearson 2020-11-27 13:59:17 UTC

Description of problem: gnome-settings window unresponsive when launched

We're having trouble tracking down exactly what are the conditions for this to happen, and it seems to be somewhat HW related as it's reproducible on some platforms but not others.

We're testing with 
Padme-3 SVT machine (P1 Gen3)
BIOS N2VET24W
ECFW N2VHT17W
ME 14.0.36.1158
Preload: Red Hat 8.3GA

When the settings window is launched you can't select any options. The system otherwise seems functional

Please let us know what debug information we can collect to figure out where it is stuck. Afraid I haven't debugged anything in gnome-settings before so wasn't sure where to start.

Version-Release number of selected component (if applicable):


How reproducible: ~50% (note - I haven't been able to reproduce myself on my setup but the PA team have a few units they can reproduce easily)


Steps to Reproduce:
1.Boot to OS, Click settings on top right to launch setting page.
2. After the settings page is opened, click any item of the page.
3.

Actual results: window unresponsive


Expected results: able to click and select items


Additional info:

Comment 1 Benjamin Berg 2020-12-16 15:06:35 UTC

If this happens when going to the "About" page, then this is probably a graphics issue.

The panel will query information about all graphics card, and this tends to (sometimes) trigger e.g. power management issues in the graphics driver.

Could you please provide appropriate logs to check whether there are kernel issues (sosreport or more specifically dmesg output).

Also, if this happens on NVIDIA machine, then please try if nouveau.runpm=0 fixes the problem.

Comment 2 Mark Pearson 2021-02-04 13:51:05 UTC

They weren't able to reproduce this with the updated version so closing the issue. Would have been nice to get to the root cause but I'll live.
(For my tracking - original internal issue was LO-913)