Plasma widget issues after Qt 6.10 upgrade

romeo-72 · October 16, 2025, 10:13am

After the last Qt upgrade to version 6.10 in Arch Linux, I have had an issue with plasma widgets on the desktop, system monitor widget showing kernel version, displayed as ‘text only’ no longer works. Similarly with the same widget showing core temperatures, again it fails to work when set to ‘text only’.

meven · October 16, 2025, 10:14am

Did you reboot or logout after the upgrade ?

You can expect serious bugs in case you don’t do it after most upgrades.

romeo-72 · October 16, 2025, 10:16am

Of course! reboot after important upgrades is done automatically.

romeo-72 · October 16, 2025, 10:21am

Yesterday I did a fresh installation, it’s the same, it’s a bug in Qt 6.10

saobento · October 16, 2025, 11:20am

It’s also broken in openSUSE Tumbleweed after the update to Qt 6.10

meven · October 16, 2025, 11:39am

Please report a bug to bugs.kde.org

saobento · October 16, 2025, 4:29pm

Krovikan · October 18, 2025, 4:33pm

Fixed in 6.5.

Regards

saobento · October 24, 2025, 1:35pm

No, it is not fixed.

Krovikan · October 24, 2025, 2:02pm

Yes, seems that was reopened. I have Plasma 6.4.5 yet. Yesterday goes out Plasma 6.5 in openSUSE TW but I do my updates in Monday.

Regards

saobento · October 24, 2025, 2:18pm

I installed the update and it still doesn’t work, this is also on TW. If you use an older AMD/ATI card and use wayland the update to plasma 6.5 might break your cursor.

M.Karrde · October 24, 2025, 3:34pm

Just tested after update and reboot.

Color me not surprised as 6.5.0 (on Arch) is still Qt 6.10 based.

One of my wallpapers changed into “dark mode” have to look into that new settings.
At least my custom Mouse cursor still works as I’m not on an older AMD card.

Krovikan · October 24, 2025, 3:50pm

I have Qt 6.10 with Plasma 6.4.5 on my openSUSE TW and the plasmoid System Monitor as text is shown:

I see text or the issue is other thing? (I am confused now)

Regards

M.Karrde · October 24, 2025, 4:42pm

Not sure, maybe something else is the root cause.
As I explained in my few days older thread, about basically the same issue (or so I thought) , I can manage to get them shown as well but they do not survive a reboot.

Krovikan · October 24, 2025, 4:45pm

Ok. Tomorrow I’ll see if change or not.

EDIT: I have Nvidia card. GTX 1070.

Regards

EDIT after reboot: Yes, is affected.

Krovikan · October 25, 2025, 6:17pm

2h ago, openSUSE TW rolled out a new snapshot with Qt updates (but don’t seems for the bug of system monitor plasmoid). Fixes for:

and

The issue with plasmoid is in Plasma side or in Qt side? (issue appears with the change to 6.10)

Regards