Bug 18904

Created attachment 8150 [details]
Screenshot start icons text

Created attachment 8151 [details]
The text fields are sometimes also dithered

Still same at current versions: plasma 5.7.0, KDE Applications 16.04.3, kernel 4.7.0-desktop-0.rc7.1.mga6, x11 1.18.3-15.mga6, nvidia340.96-37.mga6

Tests now only performed on the laptop

* Problem is not seen on MATE nor LXDE on the same system *

All while using SDDM login manager.

Summary: Nvidia: After resume, Plasma desktop icons text fields are unreadable: completely white, black or white text on black => Plasma+Nvidia: After resume, Plasma desktop icons text fields are mostly unreadable (OK in other DE, i.e MATE)

still valid.

I don't see that problem now :)

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

Created attachment 8353 [details]
Screenshot (compressed) with icon texts and MCC blurred

Reopening. As seen in attachment the problem still persists and now i saw that also the open window MCC is concerned: blurred until resized.

This is really terribly looking - we cant let put mga6 like this!

I had a drak dialog up, put the laptop to sleep using Fn+F4, wake it up and after entering password i see the dialog completely blurred, and all texts on desktop icons too.

Have tested four setups with three different Nvidia, fresh installs and upgrades from mga5, and they all show this bad looking bug.

Qt5.6.1, kf5.27.0, Plasma5.8.0

Seen on two different Lenovo T61 with different Nvidia chips, one fresh install last week, one fresh install a couple months ago.
Seen on my workstation upgraded from mga5.
And on my sons "gaming machine" fresh install a few months ago.

I wonder if the blurring of just soem apps like the drak tools is hint on what the problem is?

Strange it also is the plasma desktop program launch icons

Severity: normal => major
Priority: Normal => release_blocker

Might be this upstream bug report? https://bugs.kde.org/show_bug.cgi?id=344326

Yes, seems like that upstream bug.
Yes all Nvidia i tried (actually all i have) are different Quadros.

Except from the background, this example is kind of identical to what i see after every suspend: https://bugsfiles.kde.org/attachment.cgi?id=100142

Since about a week, the problem seem gone :)
But i leave bug open a while as i have closed it prematurely before...

Still I have seen  no problem on the larger T61p "Göran", but problem exist on the smaller T61 "Lillen".

Another difference is that on the smaller T61, the sound volume and hibernation buttons etc do not work anymore, so maybe the machine is not correctly recognised so correct settings/drivers are wrong for both these issues?

Same after updates today including kernel 4.8.10-2 : garbled on "Lillen", OK on "Göran". 

-but volume and suspend etc buttons got fixed some time ago :)

can you test with current X.org ? ( 1.19 )

CC: (none) => mageia

Adjusting priority. It is no longer a blocker given the last comments.

Priority: release_blocker => High

Morgan, if the bug is still valid and since it evolved a lot since the original issue, could you either change the summary to match the current state (+ maybe explain in a new comment what the current state is), or alternatively open a new bug report (and close this one as RESOLVED MOVED)?

I will test when there is a nvidia 340 driver...

Created attachment 8758 [details]
Blurred desktop icon texts after resume on my workstation

I now tested on my workstation "Svarten":
It do show this problem too on latest kernel, xorg, and Nvidia driver.
Screenshot attached after waking from hibernation.

GPU: Nvidia GK104 [GeForce GTX 760]
Machine: Intel i7, SSD
System: Current Cauldron 64 bit; 
 x11-driver-video-nvidia-current 375.20-2.mga6
 x11-server-xorg 1.19.0-8.mga6
 kernel-desktop-4.8.14-1.mga6

PS it hibernates and resumes nicely in other aspects, nice as /, /home and swap is on an encrypted LVM, /boot a separate ext4  :)  DS

Adjusted summary because i can no longer reproduce that some apps are blurred, only desktop icons.  (i.e before, MCC window was blurred after suspend-resume)


I wonder if the problem comes from services and whatever are started/initialised asyncronously, and depending on number of cores, speed of disk, installed services and configuration, the problem express itself on some systems but not on other, and earlier i have also seen it come and go between updates on same system (on both "Lillen" and "Goran").

- Is there some way to force some constraints on initialisation ( maybe single threaded / maybe even force whole system to execute on one core only)  - just to test if it makes a difference?

Summary: Plasma+Nvidia: After resume, Plasma desktop icons text fields and some app is unreadable (OK in other DE, i.e MATE) => Plasma+Nvidia: After resume, Plasma desktop icons text fields is unreadable on some systems

nvidia340-101 came so I updated my laptops "Göran" & "Lillen" mentionned above.
Also with x11-server-xorg 1.19.0, kernel-desktop-4.8.14, KF5 5.29

Problem still on "Lillen" problem is *back* on "Göran"

To summarise: Now 100% of my three Nvidia systems show this bug!

(workaround: it works OK with nouveau, except for applications requiring Nvidia drivers)

Created attachment 8800 [details]
Photo of garbled sddm breeze login personality icons

Now i saw that also sddm breeze login personality icons can become garbled.

Still valid.

Case is moving forward!
Possible fix posted (requires running OpenGL 3.1)
https://bugs.kde.org/show_bug.cgi?id=344326#c152

Please test next kwin

if it compiles of course :)

Heh, yes.  Please post again when it is syncing :)

Darn... my relevant laptop died - but if you have something to test i can test with caution on my daughters T61 14" thinkpad which also show the problem (now running MATE because of that)

Darn... my relevant laptop died - but if you have something to test i can test with caution on my daughters T61 14" thinkpad which also show the problem (now running MATE because of that)

Upstream seem to have a solution! :)
https://bugs.kde.org/show_bug.cgi?id=344326

iirc, i tested and this does not apply nor compile with kwin 5.8.x :/

I rediffed the latest version from https://phabricator.kde.org/D6344 and pushed it to core/updates_testing (kwin-5.8.7-2.mga6), let's see how it fares.

I can now reproduce the issue on my Optimus laptop thanks to mageia-prime, so I should be able to check it.

FYI, the patch I tested in comment 31 did not work for me.

Actually in https://bugs.kde.org/show_bug.cgi?id=382115 there is a reference to the upstream Qt bug report: https://bugreports.qt.io/browse/QTBUG-56610

It looks like this needs a fix from Qt, but they don't work to work on it because they think it's NVIDIA being buggy... KDE worked it around in KWin, but not in other Qt applications so that fix is only partial.

So... wait and see.

Keywords: (none) => FOR_ERRATA6
URL: https://bugs.kde.org/show_bug.cgi?id=344326 => https://bugreports.qt.io/browse/QTBUG-56610
Status comment: Needs someone knowing plasma or nvidia to help with debugging => (none)
Source RPM: kwin => kwin, qt, nvidia-current

Also see, patch, https://bugs.kde.org/show_bug.cgi?id=364766

> Also see, patch, https://bugs.kde.org/show_bug.cgi?id=364766

This patch works flawless with the qtbase5-5.6.2-11.mga6.src.rpm package.

CC: (none) => viscount_vauxhall

Created attachment 9912 [details]
QtBase NV Reset.patch

patch from KDE bugzilla

Hi, thanks for reporting this bug.
We are sorry, but we no longer maintains this version of Mageia. Please upgrade to the latest version and reopen this bug against that version if this bug exists there.
As a result we are setting this bug to CLOSED:OLD

CC: (none) => ouaurelien
Resolution: (none) => OLD
Status: REOPENED => RESOLVED