Bug 24490

Summary:	Taskbar in Plasma 5.15.1 has become fuzzy after recent updates
Product:	Mageia	Reporter:	Sébastien Morin <sebsweb>
Component:	RPM Packages	Assignee:	Mageia Bug Squad <bugsquad>
Status:	RESOLVED FIXED	QA Contact:
Severity:	critical
Priority:	High	CC:	kernel, marja11, thierry.vignaud, tmb
Version:	Cauldron	Keywords:	NEEDINFO
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:	x11-driver-video-ati-19.0.0-1.mga7	CVE:
Status comment:
Attachments:	Screenshot showing the fuzzy taskbar List of yesterday's installed RPMs Plasma after the install of Mga7b2 Live Plasma Plasma after the updates

Description Sébastien Morin 2019-03-10 18:55:26 CET

Description of problem:
Until yesterday's updates, my HP Pavilion laptop was running Mga7-beta2 without any problems. Then, suddenly, the taskbar in Plasma became very strange (see attachment).

You will find in another attached file the list of the updates that caused the taskbar in Plasma to stop being displayed correctly. One of these RPMs is responsible for the bug.
This is probably related to my hardware, since that bug can't be reproduced in Virtualbox (I've got the same 7b2 running and yesterday's updates didn't have the same effect.) Please, don't hesitate to ask for the output of any command you consider useful.

How reproducible: It is easily reproducible on my hardware.
This laptop is dedicated to testing, so I did another fresh install of 7b2


Steps to Reproduce:
1. Install 7-b2 from Classical installer. I made a minimal installation with Plasma, most of the packages from "Workstation" (Documentation, etc) and "Server" were unticked. The online media were not downloaded at this stage.
2. Reboot after the install. Plasma worked well. The taskbar had no problem. I used the MCC to install online media, then I ran "urpmi --auto-update" in Konsole.
3. After the update was finised, I rebooted and the taskbar was the one you can see in the screenshot attached.

To conclude: I got this result twice in a row: after yesterday's updates, and after a newly installed (with all partitions formatted) 7b2 + updates.

Comment 1 Sébastien Morin 2019-03-10 18:56:12 CET

Created attachment 10858 [details]
Screenshot showing the fuzzy taskbar

Comment 2 Sébastien Morin 2019-03-10 18:57:52 CET

Created attachment 10859 [details]
List of yesterday's installed RPMs

This list certainly contains the RPM that is responsible for the bug.

Comment 3 Sébastien Morin 2019-03-12 06:01:27 CET

I would like to add a few things:
- at first I thought this bug was related to packages recently pushed to core_update_testing, but when I reinstalled 7b2 I didn't activate testing repositories and the bug still appeared, so I suppose they are not related.
- when I bring the width of the taskbar up to 64 the icons are displayed correctly. If I go below 64 they become fuzzy. 64 seems to be the magic number here.
- I also tried with other sets of icons (Adwaita, Brise, Dark Brise, High Contrast and Oxygen) and they all show the same bug.

Hope this can help.

Comment 4 Sébastien Morin 2019-03-12 09:53:34 CET

New test today with a fresh install from Mga7-b2 Live Plasma.
See screenshot after installation.
An then the screenshot after updates.

I'm afraid this is not a CTKI error :-/

Comment 5 Sébastien Morin 2019-03-12 09:54:58 CET

Created attachment 10863 [details]
Plasma after the install of Mga7b2 Live Plasma

Comment 6 Sébastien Morin 2019-03-12 09:55:50 CET

Created attachment 10864 [details]
Plasma after the updates

Comment 7 Marja Van Waes 2019-03-12 12:26:44 CET

(In reply to Sébastien Morin from comment #2)
> Created attachment 10859 [details]
> List of yesterday's installed RPMs
> 
> This list certainly contains the RPM that is responsible for the bug.

Thanks for all the information in this and the other comments :-)

The updates contain a kernel, x11-server*, x11-driver-video-amdgpu and maybe more possible culprits. However, I don't see KDE updates in the list.

Can you try to downgrade x11-driver-video-amdgpu to the version on the iso, to see whether that solves the problem (after restarting X)

If it doesn't, downgrade the x11-server packages.

Or, install Mga7b2 Live Plasma again, and then do the updates in steps, rebooting for updates that require a reboot, and just restarting your DM (probably SDDM) for those that don't.

Keywords: (none) => NEEDINFO
CC: (none) => kernel, marja11, thierry.vignaud

Comment 8 Sébastien Morin 2019-03-13 09:20:47 CET

Thank you Marja,

I installed Mga7b2 again (from classical installer) and I did the updates in steps.

Now I know the RPM responsible for this bug is:
x11-driver-video-ati           19.0.0       1.mga7        x86_64

Also, thank you to david_david on IRC for the assistance :-)

Source RPM: (none) => x11-driver-video-ati-19.0.0-1.mga7
Priority: Normal => High
Severity: major => critical

Comment 9 Thomas Backlund 2019-03-13 09:32:44 CET

Thanks for the report.

Fix coming in  x11-driver-video-ati-19.0.0-2.mga7 currently building

CC: (none) => tmb

Comment 10 Sébastien Morin 2019-03-13 10:03:02 CET

Thank you very much Thomas,

Just installed it and rebooted... and everything is fine with my taskbar!
Closing as fixed.

Resolution: (none) => FIXED
Status: NEW => RESOLVED