https://bugs.kde.org/show_bug.cgi?id=439978
Bug ID: 439978
Summary: 5.22.2 and 5.22.3 Consistently Locks Up
Product: neon
Version: unspecified
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: neon-b...@kde.org
Reporter: cjd...@brokensolstice.com
CC: j...@jriddell.org, neon-b...@kde.org, sit...@kde.org
Target Milestone: ---
SUMMARY
Updating from 5.22.1 to 5.22.2 has caused my system to be completely unstable.
A subsequent upgrade to 5.22.3 did not help matters.
At first, I thought it was my network, because none of my network shares were
accessible, and network monitor was complaining. After trying to figure this
out by poking around the system, I found it would lock up after about 2-3
minutes. During this 2-3 minute grace period, I would be subjected to all
manner of weirdness on the KDE interface... stacatto mouse movements...
artifacts on the screens, failure to paint windows properly, etc. After some
trouble-shooting I found that the network was not my problem. Very
mysteriously, during my trouble-shooting of this issue, the network stopped
complaining... but instead, I was getting CPU stalling behaviours that would
continuously complain... and nvidia card errors on my VTs... it was very
difficutl to see these things and trouble-shoot them because my grace period
before lockup seemed to be getting shorter and shorter. Eventually, I removed
all the nvidia elements from the system... no more stalling CPUs... but the
system was still exhibiting all the same bizarre behaviors that would always
wind up with lockups... but now within a couple seconds of login.
During the week, I'd apply any updates that came my way, in hopes that it would
fix this issue. It didn't. I reinstalled the Nvidia drivers. It didn't seem to
either help or hinder the situation... I disabled compositing on the desktop...
this bought a few minutes again before lockup -- but all the same really weird
behaviors were still occurring in the interface (mentioned above), with the new
addition that the keyboard would stop sending input (mouse still worked, but I
couldn't type anything into a field on the screen). I also lost the ability to
view my VTs somewhere along the way.
Now, before people start suggesting this is hardware -- I've already ruled that
out by booting to alternate USB/DVD media and by booting to the previous KDE
Neon/Ubuntu kernel. Using the previous kernel, I cannot get a good resolution,
because it isn't loading the nvidia driver -- but the system is stable, with no
complaints of any kind. This problem seems to relate to the kernel itself, or
the nvidia driver's goodness of fit with the 5.8 kernel. I've tried logging in
using the wayland option, just to see if this helped. Of course, it didn't. I
imagine there are some other hoops I have to jump through for that to work
right... but I'm not interested in that right now.
Using the kde neon installation media current as of 7/17/2021, the problem
persists -- even when operating in live mode. Booting to safe graphics mode is
stable, but of course the resolution is terrible. I also downloaded a bootable
copy of Manjaro with KDE -- it works flawlessly, even with the proprietary
drivers. I noticed its stock kernel is 5.10.42 (unlike neon which is currently
5.8). Manjaro is also using nvidia drivers 465.31-6.
I have plenty of empty hard disk space, and plenty of memory. My video card is
an nvidia GTX 970, using the 460 branch proprietary driver in the stable branch
of the package manager. I had been using the PPA driver for a long time now,
but currently I'm on the mainstream, Ubuntu driver as part of this
trouble-shooting process.
My CPU:
cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 21
model : 48
model name : AMD Athlon(tm) X4 860K Quad Core Processor
stepping : 1
microcode : 0x6003104
cpu MHz : 1696.041
cache size : 2048 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 16
initial apicid : 0
from my syslog:
Jul 3 14:03:36 HTPC plasmashell[1382]: qt.qpa.xcb: QXcbConnection: XCB error:
9 (BadDrawable), sequence: 1739, resource id: 37748806, major code: 55
(CreateGC), minor code: 0
Jul 3 14:03:36 HTPC plasmashell[1382]: qt.qpa.xcb: QXcbConnection: XCB error:
9 (BadDrawable), sequence: 1740, resource id: 37748806, major code: 72
(PutImage), minor code: 0
I appreciate any help.
STEPS TO REPRODUCE
1. Download installation media current as of today.
2. Boot to AMD system like mine with a GTX 970 Card
3. Try to use Firefox.
OBSERVED RESULT
System locks up, windows are created, but never paint (still look like the
portion of the desktop they cover). You cannot close the window, and it will
never load, but the mouse still moves. Opening a Konsole window does the same.
VTs are inaccessible, and the system cannot be soft-booted. The system will
eventually hard lock. A hard reset is the only thing it will respond to.
EXPECTED RESULT
Expect it to work normally
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Current
(available in About System)
KDE Plasma Version: 5.22.3
KDE Frameworks Version: Current
Qt Version: Current
ADDITIONAL INFORMATION
Same hardware works fine under Manjaro (with KDE), Gentoo, and the current
system under the 5.4 kernel.
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