[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #113 from Nick  ---
I'll be a happy camper when this bug gets fixed, I can tell you.

I've just realised the plasma panel clock has froze at 17:13 and it's now
18:26, I should have left work 45 minutes ago !

Again no full screen games just chrome, dolphin and kmail and libreoffice. I've
got nothing to prove this but it feels like it's whenever I'm using Dolphin or
kmail this thing kicks off. Certainly if I leave the computer running without
those programs running I've never seen the panel freeze.

The more I'm playing with kmail & Dolphin the more this is likely to happen.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Joe]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #112 from Joe  ---
Yeah, I have seen it now on my desktop atleast twice recently where it happened
outside of full screen games.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Luca Mastromatteo]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #111 from Luca Mastromatteo  ---
Today happened again, with no game opened, just DaVinci resolve and chromium
browser.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[beniu]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #110 from beniu  ---
Created attachment 112596
  --> https://bugs.kde.org/attachment.cgi?id=112596=edit
sleep mode to ram busting ingame opengl aswell

sleep mode to ram busting ingame opengl aswell

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Mark]

https://bugs.kde.org/show_bug.cgi?id=353983

Mark  changed:

   What|Removed |Added

 CC|mark...@gmail.com   |

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Luca Mastromatteo]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #109 from Luca Mastromatteo  ---
Having the same issue on an NVIDIA + Ryzen Desktop build... Sometimes I
workaround this by killing plasmashell and kwin_x11, glad to see I'm not alone.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

Christoph Feck  changed:

   What|Removed |Added

 CC||lukycroci...@gmail.com

--- Comment #108 from Christoph Feck  ---
*** Bug 394146 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #107 from Nick  ---
Speak of the devil, just glanced at the clock and the seconds (along with
hours/minutes and the rest of the desktop is frozen. Froze an hour and ten
minutes ago (uptime 2:18) and all I've been using is kmail, Dolphin & Chrome
with 8 tabs open. And of course CNTRL-ALT-F1 followed by CNTRL-ALT-F7 starts it
working again.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #106 from Nick  ---
(In reply to Joe from comment #105)
> Something I noticed last night: when the panel gets stuck like this even
> after exiting the OpenGL/Vulkan application/game, switching to a virtual
> terminal and then back to X restores the panel to working again.

That's the trick I use too. :-)

Interestingly that trick does not work when plasma hangs when you move (cut &
paste) a large number of files using Dolphin. Plasma stays frozen until the
freeze ends, the time period of the froze being depending on the number of
files moved. Try moving 1000 files and see how long plasma freezes for..

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Joe]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #105 from Joe  ---
Something I noticed last night: when the panel gets stuck like this even after
exiting the OpenGL/Vulkan application/game, switching to a virtual terminal and
then back to X restores the panel to working again.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

Christoph Feck  changed:

   What|Removed |Added

 CC||rafonix_twi...@go2.pl

--- Comment #104 from Christoph Feck  ---
*** Bug 393175 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Hicks1gb]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #103 from Hicks1gb  ---
It's the same with me.
Once the problem starts, the desktop effects are lost, the time is frozen, the
taskbar icons are ghosts and many times I can't shut down the system from the
"start" button, as another process breaks down, having to shut down the system
from the terminal. But the problem does not end there now the computer does
not shut down because there is a process that does not close -A start job is
running... -. I have to wait 90 seconds for it to finish closing, and when the
PC is finally turned off, it starts again automatically.
When that happens, the computer turns on correctly, but whenever I turn it off,
it starts automatically. It reminds me a lot of a problem I had with the wake
on lan, that whenever I activated it, the computer would only turn on when I
turned it off.
The only way to get it to shut down again is to force the button to shut it
down.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #102 from Nick  ---
Thanks, I've killed plasmashell & restarted using the command
gammaray plasmashell

but I can't see any view ? Am I starting it correctly ? I've had a quick look
online but can't find any info on starting a view. I've seen some of the
gammaray docs that show more options in the left hand column like quick scenes,
state machines which I seem to be missing. Are there KDE docs that describe
using gammaray, or am I going to have to read the manual & figure it out.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #101 from David Edmundson  ---
> is this bad?.

No.

It shows an krunner thread is sittling idling.

Plasma isn't frozen, if you run with gammaray attached whilst the panel is
froze the panel in gammaray's view is updated fine.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #100 from Nick  ---
Just out of curiosity, if anybody has a working knowledge of ThreadWeaver
what's going on here and is this bad?. It looks bad to me but then I know
diddly squat about thread programming. This is one of the plasmashell backtrace
threads captured during a plasma panel freeze. For all the other associated
threads see the attachment.

Thread 34 (Thread 0x7ff24a7fc700 (LWP 6695)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x7ff3908ac65b in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x7ff2b754d80f in
ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*,
bool, bool, bool) () from /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#3  0x7ff2b75518e8 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#21 0x7ff2b7551942 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#22 0x7ff2b754c9ed in
ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#23 0x7ff2b754f460 in ThreadWeaver::Thread::run() () from
/usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#24 0x7ff3908ab709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x7ff38fe9d6ba in start_thread (arg=0x7ff24a7fc700) at
pthread_create.c:333
#26 0x7ff3901ba41d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #99 from Nick  ---
Created attachment 112396
  --> https://bugs.kde.org/attachment.cgi?id=112396=edit
Backtrace of plasmashell

Attached plasmashell backtrace, captured while the panel was frozen, the only
programs I was running at the time were kmail, dolphin, filezilla, chrome,
kate, okular and system activity monitor. Is there any other processes I should
be getting a backtrace or other data on ?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

g...@protonmail.com changed:

   What|Removed |Added

 CC||g...@protonmail.com

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #98 from Nick  ---
I've just added the following bug https://bugs.kde.org/show_bug.cgi?id=393748
which also is a plasma shell freeze but caused by Dolphin and is 100%
reproducible. Thought if your following this thread you may want to take a look
as maybe it's all related.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Hicks1gb]

https://bugs.kde.org/show_bug.cgi?id=353983

Hicks1gb  changed:

   What|Removed |Added

 CC||hicks...@gmail.com

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Dr . Chapatin]

https://bugs.kde.org/show_bug.cgi?id=353983

Dr. Chapatin  changed:

   What|Removed |Added

 CC||chrno-sphe...@hotmail.com

--- Comment #97 from Dr. Chapatin  ---
*** Bug 362955 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Lukas Schneiderbauer]

https://bugs.kde.org/show_bug.cgi?id=353983

Lukas Schneiderbauer  changed:

   What|Removed |Added

 CC||lukas.schneiderbauer@gmail.
   ||com

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #96 from Nick  ---
(In reply to David Edmundson from comment #92)
> >Speculation that fit all the facts. :)
> 
> Not really. Kwin doesn't allocate memory for plasma to render into. We're on
> GLX here.
> 
> Can someone paste the error they have in pastebin that mentions  XID error
> 31.

So here's the error.
https://pastebin.com/HDtNJn5t

As mentioned in an earlier post this occurred 2 seconds before the panel froze.
I would have had the following programs open, Filezilla, Dolphin, kdevelop,
Chrome, Discover, kmail.

KDE Neon, Plasma 5.12.3, GTX570M, Nvidia driver 384.111, I7 2670QM CPU.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #95 from tesfab...@gmail.com ---
My desktop effects just reset and the compositing has switched to XRender
instead of returning to OpenGL 3.1. I don't know if it is a separate bug or is
still related to this. Anyway the plasma panel doesn't update anymore (either
by enabling or disabling compositing with the shortcut).

NVIDIA GTX 970 (driver 390.48)
Plasma 5.12.3
ArchLinux with linux 4.15.13-1

Compositing
===
Compositing is active
Compositing Type: XRender

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Daniel]

https://bugs.kde.org/show_bug.cgi?id=353983

Daniel  changed:

   What|Removed |Added

 CC||vild...@tutanota.com

--- Comment #94 from Daniel  ---
I think XID error 31 is unrelated to this bug. I get xid error only when
launching steam, then kwin restarts with "Desktop effects were restarted due to
a graphics reset" notification.

I made a video with panel bug where I didn't get any xid errors:
https://streamable.com/3czun
Also, someone stated that this bug occur with intel gpu, so it has to be
problem either with kwin or plasmashell.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #93 from Nick  ---
Sure I'm travelling at the moment but I'll send it in about 4 hours

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #92 from David Edmundson  ---
>Speculation that fit all the facts. :)

Not really. Kwin doesn't allocate memory for plasma to render into. We're on
GLX here.

Can someone paste the error they have in pastebin that mentions  XID error 31.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

tesfab...@gmail.com changed:

   What|Removed |Added

 CC||tesfab...@gmail.com

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[evea]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #91 from evea  ---
Just wanted to clarify that the problem is not random an easy to reproduce, it
happens every day to me if I have steam running and launch CS:GO.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Allan]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #90 from Allan  ---
The complete process goes:

Steam (or others) triggers KWin to reset graphics subsystem -> Plasma is now
rendering to a bad address -> NVidia throw Xid 31.

Speculation that fit all the facts. :)

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #89 from David Edmundson  ---
>KWin forgot to inform Plasma about new render memory location, Plasma renders 
>to a bad location and NVidia MMU says Xid 31.

That doesn't sound right at all.
What makes you say it's that?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Allan]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #88 from Allan  ---
KWin forgot to inform Plasma about new render memory location, Plasma renders
to a bad location and NVidia MMU says Xid 31.

Triggered easily with Steam.

Restarting plasma causes correct rendering again: kquitapp5 plasmashell &&
kstart plasmashell

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #87 from Nick  ---
(In reply to Steven Gilberd from comment #85)
> Apologies for the typo - I don't really own a laptop from the future.
> Although if I did, I imagine sourcing drivers for it might be a little
> tricky ;-).
> 
> 
> 'Late 3013' in my previous message should actually read 'late 2013'.

I sure hope this bug has been fixed by 3013 :-D, not to mention Wayland working
with Nvidia hardware !

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #86 from Nick  ---
(In reply to Steven Gilberd from comment #84)
> I don't think this is just an NVIDIA issue. The log messages from their
> driver are useful, but I've been experiencing this exact bug with Intel
> graphics for years.
> 
> The system I've encountered it on is a late 3013 MacBook Pro (the 13" one
> with Intel-only graphics).

I agree, I'm hoping that somebody that knows this code could work on it if we
can find a 100% reliable way of triggering the bug so at least it's easier to
track it down. Although I code mainly in C and a tiny amount in C++ I'm tempted
to start delving into this. KDE & Plasma is a great platform but it needs to be
stable. My windows colleagues would laugh if I told them I had to CNTRL-F1 &
CNTRL-F7 periodically because the panel & desktop rendering had frozen !

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Steven Gilberd]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #85 from Steven Gilberd  ---
Apologies for the typo - I don't really own a laptop from the future. Although
if I did, I imagine sourcing drivers for it might be a little tricky ;-).


'Late 3013' in my previous message should actually read 'late 2013'.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Steven Gilberd]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #84 from Steven Gilberd  ---
I don't think this is just an NVIDIA issue. The log messages from their driver
are useful, but I've been experiencing this exact bug with Intel graphics for
years.

The system I've encountered it on is a late 3013 MacBook Pro (the 13" one with
Intel-only graphics).

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #83 from Nick  ---
I can't post the actual error bugs.kde.org keeps telling me its spam !

Anyway ...
Just had the panel rendering freeze again, was using with kmail at the time, so
did a bit of detective work. As I had enabled seconds on the panel clock it
gives me a time to look for in the logs. So the panel froze at 00:13:35.

Looking at /var/log/syslog, the following entry exists at 00:13:33 that's
relevant to the GPU. There was nothing else around that time that was unusual.

This URL explains the error I'm getting
http://docs.nvidia.com/deploy/xid-errors/index.html#topic_5_2

This error is inserted into /var/log/syslog by the Nvidia driver and indicates
an error. If I've understood this correctly, this is XID error 31.

So I looked up the NVidia documentation which states: 

XID 31: Fifo: MMU Error
This event is logged when a fault is reported by the MMU, such as when an
illegal address access is made by an applicable unit on the chip Typically
these are application-level bugs, but can also be driver bugs or hardware bugs.

When this event is logged, NVIDIA recommends the following:

Run the application in cuda-gdb or cuda-memcheck , or
Run the application with CUDA_DEVICE_WAITS_ON_EXCEPTION=1 and then attach later
with cuda-gdb, or
File a bug if the previous two come back inconclusive to eliminate potential
NVIDIA driver or hardware bug.

Note: The cuda-memcheck tool instruments the running application and reports
which line of code performed the illegal read.

The cuda-memcheck tool sounds like it might be very useful for tracking down
this bug.

Has anybody tried running cuda-memcheck with plasma ? Is it even possible ?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #82 from Nick  ---
Just had the panel rendering freeze again, was using with kmail at the time, so
did a bit of detective work. As I had enabled seconds on the panel clock it
gives me a time to look for in the logs. So the panel froze at 00:13:35.

Looking at /var/log/syslog, the following entry exists at 00:13:33 that's
relevant to the GPU. There was nothing else around that time that was unusual.

Sorry post this in sections as bugs.kde.org seems to think my post contains
spam ! ;-/

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #81 from Nick  ---
Test

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #80 from Nick  ---
Panel rendering freeze still happens in Plasma 5.12.3 (KDE Neon). I'd been
running KDE Neon for probably 6 hours (laptop), I was only using Chrome, Gimp,
Kmail, Dolphin, no games or apps that require compositing as far as I'm aware.
On the desktop I'm using the 'simple monitor widget'. I noticed the seconds on
the clock on the panel had froze, panel was still clickable ie you could close
apps but the rendering then no longer matches what actaully running. The simple
monitor also freezes. To restart rendering I switch panel to autohide or
alternatively CNTRL_ALT-F1 followed by CNTRL-ALT-F7 restarts the panel & widget
rendering.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Joe]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #79 from Joe  ---
I don't have any third party apps (or widgets even), and I get this issue on
both my Laptop and Desktop, so I would doubt they are the issue. And, yes, the
panel stops rendering but remains "clickable", although the text/position of
things gets pretty far off as its not repainting.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nick]

https://bugs.kde.org/show_bug.cgi?id=353983

Nick  changed:

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 CC||nick.craig@gmail.com

--- Comment #78 from Nick  ---
Just to add my tuppence worth. I also had this problem where the panel stops
rendering ie appears frozen, but remains clickable along with widgets such as
the simple monitor also not rendering.

In my case I was also using the Docky launchpad application. Interestingly
Docky remained working after the panel had frozen. However after removing Docky
the panel is now working reliably which is great because I don't really need
Docky.

It does sound like any 3rd part app that requires compositing causes an issue
in Plasma rendering.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Ryein Goddard]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #77 from Ryein Goddard  ---
I managed to fix my issue.  I have an Nvidia 1070 and the latest Nvidia
drivers.

If you run into this issue follow these steps and report back.

Scale Method : Smooth
Rendering backend : OpenGL 3.1
Tearing prevention("vsync") : Full screen repaints
Keep window thumbnails : Only for Shown Windows
Experimental : 
   Enable color correction : false(unchecked)
   Allow applications to block compositing : false(unchecked)

The key is really not allowing applications to block compositing for me.  After
I stop letting applications to disable it, after it reverting when the
application was closed never gave me any issues.  I think compositing isn't
re-starting properly after an application disables it.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Mark]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #76 from Mark  ---
(In reply to evea from comment #75)
> (In reply to Mark from comment #73)
> > Where are we now? Which GPU is recommended?
> > As i get from the comments that nvidia is apparently not recommended 
> > anymore.
> > I wouldn't be surprised if "AMD" would be the answer now. As they have
> > become really good (in terms of open source drivers).
> 
> Oh absolutely, if I get get asked which ditro someone should try, my first
> question is what GPU they use because I just cant recommend Plasma in
> combination with an NVIDIA GPU.
> 
> Not just the panel breaking, but also the generally poor desktop
> performance. If I resize a windows quickly I can get the desktop FPS down to
> 20FPS with a 970 GTX, where an old iGPU runs smoothly at 60fps.

:(

I still have a GPU from the times when they seemed to recommend either nvidia
or intel. Mine still is a GTX 670.

But is that perormance issue really an issue of KWin or just Qt (QML more
specifically)?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[evea]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #75 from evea  ---
(In reply to Mark from comment #73)
> Where are we now? Which GPU is recommended?
> As i get from the comments that nvidia is apparently not recommended anymore.
> I wouldn't be surprised if "AMD" would be the answer now. As they have
> become really good (in terms of open source drivers).

Oh absolutely, if I get get asked which ditro someone should try, my first
question is what GPU they use because I just cant recommend Plasma in
combination with an NVIDIA GPU.

Not just the panel breaking, but also the generally poor desktop performance.
If I resize a windows quickly I can get the desktop FPS down to 20FPS with a
970 GTX, where an old iGPU runs smoothly at 60fps.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

David Edmundson  changed:

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--- Comment #74 from David Edmundson  ---
*** Bug 354492 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Mark]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #73 from Mark  ---
So this is a corner case with nvidia i suppose?
I haven't head this issue in a while even though i still have the same hardware
as when i reported this issue (under a different bug). I have to admit though,
that was at a time when i played a steam game almost daily, something that
hasn't happened since.

But i'm curious. Nvidia was once the card you should have for linux. Any
desktop would work best on that.
Then it was Intel which was - till a few years ago - putting out driver updates
fairly regularly.
AMD was always a big no-go due to it's massive unstable behavior and always
lacking behind in kernel support.

Where are we now? Which GPU is recommended?
As i get from the comments that nvidia is apparently not recommended anymore.
I wouldn't be surprised if "AMD" would be the answer now. As they have become
really good (in terms of open source drivers).

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[evea]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #72 from evea  ---
Since this bug breaks basic desktop functionality, many hours daily for some
users and there is not solution in sight. Is there a way to add a dirty fix for
NVIDIA users?

Instead of just disabling compositor run:

disable compositor
kwin_x11 --replace
disable compositor

How could we add this our self so it is automated?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Allan]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #71 from Allan  ---
More often than not, using Steam cause kwin to perform a "graphics reset".
Plasma doesn't get that and tries to render to the old addresses.

You can monitor the kwin output and react to the reset, with a: kquitapp5
plasmashell && kstart plasmashell

/Allan

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Maxime Willer]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #70 from Maxime Willer  ---
I believe I have enabled "export __GL_YIELD=USLEEP" and I still get it.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Mahendra Tallur]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #69 from Mahendra Tallur  ---
BTW, as you people all seem to encounter it when using NVIDIA proprietary
drivers + some openGL apps that suspend compositing automatically, can you tell
what specific tweak you applied ? Here I force the composition pipeline
(otherwise my desktop animations are too jerky) but I'm pretty sure it also
occurred when using "export __GL_YIELD=USLEEP"

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Mahendra Tallur]

https://bugs.kde.org/show_bug.cgi?id=353983

Mahendra Tallur  changed:

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 CC||ma...@free.fr

--- Comment #68 from Mahendra Tallur  ---
Hi ! I get a random issue that seems related. 

Sometimes, (it occurs quite regularly, like once every few days) the panel
"freezes". Well, not really, as it remains clickable, but it is not updated
"visually" anymore. I can still raise / lower windows, switch desktops... but
the panel doesn't reflect what I do.

Disabling / re-enabling desktop effects makes no difference. I didn't think of
restarting KWin. I will, next time.

I remember that several minutes earlier, I started Steam and got a notification
according to which desktop effects had to be reinitialized. It didn't seem to
have any consequence, but that might be related. Then I pinned some apps to my
panel, and this is when it occurred. Apps running : Thunderbird, Firefox,
Steam.

Also, I'm using NVIDIA drivers 390.x (but it occurred before) and Plasma 5.12.1
(KDE Neon).

I don't know how to make it reproducible. But it's quite frequent.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Max]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Maxime Willer]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #67 from Maxime Willer  ---
Yes indeed sorry it has since some back...

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Ryein Goddard]

https://bugs.kde.org/show_bug.cgi?id=353983

Ryein Goddard  changed:

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 CC||ryein.godd...@gmail.com

--- Comment #66 from Ryein Goddard  ---
This problem isn't solved by using the "Allow applications to block
compositing" for me.

For me the panel will freeze when launching Unity 3D "games", or other games. 
Also after closing the game the font turns blurry.  For my work this is
debilitating.  I cannot restart every single time I want to run this software
which I need for work.

The only thing that works for me is using XRender instead of OpenGL.

I am using the Nvidia driver 390.

This really sucks because it also disables all the nice visual effects.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Maxime Willer]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #65 from Maxime Willer  ---
Not sure if I have done anything but it seems to be gone for me with plasma
5.12 on the 384 latest drivers and a 1060. Will let you know if it comes back.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Joe]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #64 from Joe  ---
Just wanted to add that it seems to be still present in 5.12.0. Let me know if
there is anything else needed to help debug.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Joe]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[John Miller]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Antonio Orefice]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #63 from Antonio Orefice  ---
Well, i just noticed that panels/plasma keeps updating again by just restarting
kwin, even with compositing disabled.
I mean, kwin restarts without compositing.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Jason Curtiss]

https://bugs.kde.org/show_bug.cgi?id=353983

Jason Curtiss  changed:

   What|Removed |Added

 CC||jason.r.curt...@gmail.com

--- Comment #62 from Jason Curtiss  ---
I recently stopped using kwin for my window manager in favor of i3wm and
compton for compositing.  I am no longer able to reproduce this bug, even if
compton is not running.

Since the nvidia driver and plasmashell remain the same, this lends some
support to the problem being kwin related.

> cat ~/.config/plasma-workspace/env/wm.sh 
export KDEWM=/usr/bin/i3
compton --daemon --config ~/.config/compton.conf

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #61 from Christoph Feck  ---
No, we didn't find a developer yet who understands the cause for this issue and
is able to propse a patch. It is not clear if the bug is in kwin, the
plasmashell, or anywhere in graphics subsystem.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Daniel Eckl]

https://bugs.kde.org/show_bug.cgi?id=353983

Daniel Eckl  changed:

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 CC||daniel.e...@gmx.de

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Maxime Willer]

https://bugs.kde.org/show_bug.cgi?id=353983

Maxime Willer  changed:

   What|Removed |Added

 CC||thesilentl...@gmail.com

--- Comment #60 from Maxime Willer  ---
Same issue on 5.11.5 with nvidia drivers. Is a fix in the works?

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

David Edmundson  changed:

   What|Removed |Added

 CC||gaj...@gmail.com

--- Comment #59 from David Edmundson  ---
*** Bug 363647 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Sebastian Kuźlak]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #58 from Sebastian Kuźlak  ---
(In reply to David Edmundson from comment #57)
> From some guy on Reddit:
> 
> 
> Make sure Systemsettings > Display & Monitor > Compositor > "Allow
> Applications to block compositing" is checked. (This is not absolutely
> necessary but it makes the bug appear faster on my system.)
> 
> Make sure compositing is actually active (You have shadows under your
> plasma panel)
> 
> Download this game: https://12amstatic.itch.io/wishcraft > ""Download
> Now" > Enter 0$ > Download "Wishcraft PC version". (90MB)
> 
> Extract the game and change into the folder
> 
> Start the game with "Wishcraft.sh" (Now this is the tricky part. It does
> not happen all the time, but if you start the game multiple times, sooner or
> later my panel freezes in "non compositing" mode. I have to restart kwin
> then to get it back to work until it freezes again)
> 
> 
> 
> 
> 
> -
> 
> Also apparently my NV robustness support patch doesn't make a difference to
> this.
For this bug to occur you can use any opengl app. Blender will be enough to
trigger it. Turn off composigint (via ctrl+alt+f12 or using "Allow Applications
to block compositing" option ) and after few minutes panel stop redrawing.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

David Edmundson  changed:

   What|Removed |Added

 CC||k...@davidedmundson.co.uk

--- Comment #57 from David Edmundson  ---
>From some guy on Reddit:


Make sure Systemsettings > Display & Monitor > Compositor > "Allow
Applications to block compositing" is checked. (This is not absolutely
necessary but it makes the bug appear faster on my system.)

Make sure compositing is actually active (You have shadows under your
plasma panel)

Download this game: https://12amstatic.itch.io/wishcraft > ""Download Now"
> Enter 0$ > Download "Wishcraft PC version". (90MB)

Extract the game and change into the folder

Start the game with "Wishcraft.sh" (Now this is the tricky part. It does
not happen all the time, but if you start the game multiple times, sooner or
later my panel freezes in "non compositing" mode. I have to restart kwin then
to get it back to work until it freezes again)





-

Also apparently my NV robustness support patch doesn't make a difference to
this.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[evea]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #56 from evea  ---
Same bug still present in 5.11. 

What can we do to get the fixed? Is there more information needed? This has
been open for 2 years, it is a bug which people experience every day breaking
one of the main functions of Plasma. It affects latte dock the same as the
default panel. Please let us know how we can help or give us an update. Thank
you.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Antonio Orefice]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #55 from Antonio Orefice  ---
If it can be useful for debugging, i just noticed that even switching from
opengl to xrender compositing triggers the bug (panel stops to update while
compositing is switched to xrender from opengl, and starts updating again as
soon as compositing is switchet to opengl again)

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Fabio Coatti]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

Christoph Feck  changed:

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 CC||yanp.b...@gmail.com

--- Comment #54 from Christoph Feck  ---
*** Bug 386327 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

Christoph Feck  changed:

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 CC||tamius@gmail.com

--- Comment #53 from Christoph Feck  ---
*** Bug 361692 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Simon Andric]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[evea]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=353983

David Edmundson  changed:

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   ||br

--- Comment #52 from David Edmundson  ---
*** Bug 386717 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #51 from hitori...@gmail.com ---
Created attachment 108776
  --> https://bugs.kde.org/attachment.cgi?id=108776=edit
qdbus org.kde.KWin /KWin supportInformation

Same issue here on Fedora 26 KDE Spin with NVIDIA GeForce GTX 650 (proprietary
driver v387.22)

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Harald Hvaal]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=353983

Christoph Feck  changed:

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--- Comment #50 from Christoph Feck  ---
*** Bug 371219 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Harm]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[kafei]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Arthur Țițeică]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Dr . Chapatin]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=353983

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--- Comment #49 from Kai Uwe Broulik  ---
*** Bug 383810 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Stefano Forli]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #48 from Stefano Forli  ---
Beside the panel itself, I've seen the same with any other windows.

Plasma Framework 5.28.0/Qt 5.7.1 (Debian 9.1 Stretch) with Nvidia Quadro K2200
proprietary drivers 375.66.

This workstation runs OpenGL code for visualizing data, and after a while I see
this bug kicking in. What's most annoying is that it can show up even a few
hours after a fresh reboot. One thing that I've noticed is that it seems to be
loosely correlated with the use of the X11vnc server.

Another possible suspect could be the VirtualBox driver, but, again, loose
correlation here.

I've checked the .xsession-errors log, but there isn't anything related to the
issue (just the usual 220Mb of Kmix errors)

Given the two years anniversary around the corner, it would be nice to see some
good news.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

alex.brrsc...@gmail.com changed:

   What|Removed |Added

 CC||alex.brrsc...@gmail.com

--- Comment #47 from alex.brrsc...@gmail.com ---
Still affected in Plasma 5.8.7 (Frameworks 5.35.0 / Qt 5.6.1), using Nvidia GTX
970 with propietary drivers 381.22

When I start a game, compositing get off automatically, and if I alt+tab to the
desktop, the task manager doesn't update anymore, although I change between
virtual desktops, the same apps are shown.

After I close the game, and compositing auto enables again, if I alt+shift+f12
to disable, the same apps appear in the panel, confirming the past freeze state
of other comments.

qdbus Kwin information
https://goo.gl/VoMD8n

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=353983

Kai Uwe Broulik  changed:

   What|Removed |Added

 CC||danni@gmail.com

--- Comment #46 from Kai Uwe Broulik  ---
*** Bug 375742 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Ruman Gerst]

https://bugs.kde.org/show_bug.cgi?id=353983

Ruman Gerst  changed:

   What|Removed |Added

 CC||mrbo...@live.de

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Antonio Orefice]

https://bugs.kde.org/show_bug.cgi?id=353983

--- Comment #45 from Antonio Orefice  ---
Eheh, I've been late enough times to learn to not trust the plasma panel clock
while i'm playing games :)

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Alexander]

https://bugs.kde.org/show_bug.cgi?id=353983

Alexander  changed:

   What|Removed |Added

 CC||ashad...@gmail.com

--- Comment #44 from Alexander  ---
Same here with Plasma 5.10, nvidia proprietary driver.

I disable compositing automatically for Mplayer, so when I'm watching videos,
my clock displays a time in the past (the first time the compositer went off, I
think), the system tray icons don't correspond to the actual icons (you click
one and trigger the other), the taskbar is wrong, etc...

Resizing the panel "fixes" it temporarily.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=353983

Kai Uwe Broulik  changed:

   What|Removed |Added

 CC||mark...@gmail.com

--- Comment #43 from Kai Uwe Broulik  ---
*** Bug 378043 has been marked as a duplicate of this bug. ***

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Steven Gilberd]

https://bugs.kde.org/show_bug.cgi?id=353983

Steven Gilberd  changed:

   What|Removed |Added

 CC||st...@erayd.net

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Kenneth Perry]

https://bugs.kde.org/show_bug.cgi?id=353983

Kenneth Perry  changed:

   What|Removed |Added

 CC||thothone...@gmail.com

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[Tony]

https://bugs.kde.org/show_bug.cgi?id=353983

Tony  changed:

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 CC||jodr...@live.com

--- Comment #42 from Tony  ---
(In reply to Moritz Moeller-Herrmann from comment #41)
> Confirm that the bug is still present in 5.8. You can prevent it by turning
> off compositing completely, so the bug title is actually wrong. I also
> noticed that the bug goes away temporarily if I switch composting from GL
> 2.0 to 3.1 and vice versa.

"kwin --replace" also works.

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[plasmashell] [Bug 353983] Turning off compositing breaks Plasma panel rendering

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=353983

martc...@gmx.net changed:

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 CC||martc...@gmx.net

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