SOLVED Plasma 6 crashes

Message

tranquilcool · Post by **tranquilcool** » Tue Sep 03, 2024 7:00 pm

I tried again yesterday after plasma6 got into the main tree.
Same results. I just can't get it to work. I can't even start in on the command line with startplasma-x11
because it can't connect to the server, and with Wayland same segfaults as before
Unfortunately I have to stick to plasma5 until I can find a solution.

What I am thinking is that maybe it doesn't play well with the following card, which is
what I have.

Code: Select all

03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile] (rev 83)
	Subsystem: ASUSTeK Computer Inc. Device 124e
	Flags: bus master, fast devsel, latency 0, IRQ 44, IOMMU group 2
	Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Memory at fe800000 (64-bit, non-prefetchable) [size=256K]
	I/O ports at d000 [size=256]
	Expansion ROM at fe840000 [disabled] [size=128K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Legacy Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Kernel driver in use: amdgpu
	Kernel modules: amdgpu

[Administrator edit: added [code] tags to preserve output layout. -Hu]

localtoast · Post by **localtoast** » Wed Sep 04, 2024 2:05 am

tranquilcool wrote:I tried again yesterday after plasma6 got into the main tree.
Same results. I just can't get it to work. I can't even start in on the command line with startplasma-x11
because it can't connect to the server, and with Wayland same segfaults as before
Unfortunately I have to stick to plasma5 until I can find a solution.

What I am thinking is that maybe it doesn't play well with the following card, which is
what I have.

03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile] (rev 83)
Subsystem: ASUSTeK Computer Inc. Device 124e
Flags: bus master, fast devsel, latency 0, IRQ 44, IOMMU group 2
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at fe800000 (64-bit, non-prefetchable) [size=256K]
I/O ports at d000
Expansion ROM at fe840000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, IntMsgNum 0
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [270] Secondary PCI Express
Kernel driver in use: amdgpu
Kernel modules: amdgpu

Thanks for this, it's sparked a thought. I have AMD/ATI R7 integrated and R7 M340 discrete graphics, also running amdgpu. This actually gives me two ideas: first of all, I'm thinking about blacklisting amdgpu and forcing the kernel to use VESA instead. The graphics quality will be horrible but it might at least eliminate the amdgpu module as a variable. Secondly, I wonder about using DRI_PRIME to force Plasma to start with either integrated graphics or discrete graphics only. I'm at work now but will give both of these a go sometime in the next 8-12 hours. Will let you know how I get on.

Post by **sam_** » Wed Sep 04, 2024 5:26 am

A new thread with your own backtraces would be welcome so we can be sure. Let's keep tranquilcool's issue in this one.

At this point, tranquilcool, please file a bug upstream with the backtrace.

sokhapkin · Post by **sokhapkin** » Fri Sep 06, 2024 1:32 pm

tranquilcool wrote: What I am thinking is that maybe it doesn't play well with the following card, which is
what I have.

Doesn't look as graphics card related. I have exactly the same crash on amdgpu laptop, but my main PC with Intel built in graphics runs Plasma 6 fine. I did ssh -Y to amdgpu laptop from my main PC and executed "gdb konsole". Here is what I get:

Code: Select all

Reading symbols from konsole...
(No debugging symbols found in konsole)
(gdb) run
Starting program: /usr/bin/konsole 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[New Thread 0x7fffeeee26c0 (LWP 2885)]
[Detaching after fork from child process 2886]
[New Thread 0x7fffee6e16c0 (LWP 2887)]
[New Thread 0x7fffed86f6c0 (LWP 2888)]
[New Thread 0x7fffed06e6c0 (LWP 2889)]
[New Thread 0x7fffec86d6c0 (LWP 2890)]
[New Thread 0x7fffe5dff6c0 (LWP 2891)]
[New Thread 0x7fffe55fe6c0 (LWP 2892)]

Thread 1 "konsole" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ??? ()
#1  0x00007fffedeaab39 in Breeze::Style::toolBarExtensionIcon
    (this=this@entry=0x555555619ea0, standardPixmap=standardPixmap@entry=QStyle::SP_ToolBarHorizontalExtensionButton, option=option@entry=0x0, widget=widget@entry=0x5555557cc490) at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:8122
#2  0x00007fffedead7cc in Breeze::Style::standardIconImplementation
    (this=0x555555619ea0, standardPixmap=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x5555557cc490)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:2076
#3  0x00007fffede61bb1 in Breeze::Style::standardIcon
    (this=<optimized out>, pixmap=<optimized out>, option=<optimized out>, widget=<optimized out>)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4_build/kstyle6/breeze6_autogen/EWIEGA46WW/../../../../breeze-6.1.4/kstyle/breezestyle.h:166
#4  0x00007ffff76b2aed in QProxyStyle::standardIcon(QStyle::StandardPixmap, QStyleOption const*, QWidget const*) const ()
    at /usr/lib64/libQt6Widgets.so.6
#5  0x00007ffff7543fd2 in ??? () at /usr/lib64/libQt6Widgets.so.6
#6  0x00007ffff7586da6 in ??? () at /usr/lib64/libQt6Widgets.so.6
#7  0x00007ffff7589582 in QMainWindow::menuBar() const () at /usr/lib64/libQt6Widgets.so.6
#8  0x00007ffff7f6de2f in Konsole::MainWindow::setupActions() () at /usr/lib64/libkonsoleapp.so.24.05.2
#9  0x00007ffff7f6fc1d in Konsole::MainWindow::MainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#10 0x00007ffff7f62243 in Konsole::Application::newMainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#11 0x00007ffff7f63588 in Konsole::Application::processWindowArgs(bool&) () at /usr/lib64/libkonsoleapp.so.24.05.2
#12 0x00007ffff7f6540a in Konsole::Application::newInstance() () at /usr/lib64/libkonsoleapp.so.24.05.2
#13 0x0000555555559426 in ??? ()
#14 0x00007ffff5e5e320 in ??? () at /usr/lib64/libc.so.6
#15 0x00007ffff5e5e3d9 in __libc_start_main () at /usr/lib64/libc.so.6
#16 0x0000555555559535 in ??? ()
(gdb)

tranquilcool · Post by **tranquilcool** » Fri Sep 06, 2024 1:37 pm

sokhapkin wrote:

tranquilcool wrote: What I am thinking is that maybe it doesn't play well with the following card, which is
what I have.

Doesn't look as graphics card related. I have exactly the same crash on amdgpu laptop, but my main PC with Intel built in graphics runs Plasma 6 fine. I did ssh -Y to amdgpu laptop from my main PC and executed "gdb konsole". Here is what I get:

Code: Select all

Reading symbols from konsole...
(No debugging symbols found in konsole)
(gdb) run
Starting program: /usr/bin/konsole 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[New Thread 0x7fffeeee26c0 (LWP 2885)]
[Detaching after fork from child process 2886]
[New Thread 0x7fffee6e16c0 (LWP 2887)]
[New Thread 0x7fffed86f6c0 (LWP 2888)]
[New Thread 0x7fffed06e6c0 (LWP 2889)]
[New Thread 0x7fffec86d6c0 (LWP 2890)]
[New Thread 0x7fffe5dff6c0 (LWP 2891)]
[New Thread 0x7fffe55fe6c0 (LWP 2892)]

Thread 1 "konsole" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ??? ()
#1  0x00007fffedeaab39 in Breeze::Style::toolBarExtensionIcon
    (this=this@entry=0x555555619ea0, standardPixmap=standardPixmap@entry=QStyle::SP_ToolBarHorizontalExtensionButton, option=option@entry=0x0, widget=widget@entry=0x5555557cc490) at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:8122
#2  0x00007fffedead7cc in Breeze::Style::standardIconImplementation
    (this=0x555555619ea0, standardPixmap=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x5555557cc490)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:2076
#3  0x00007fffede61bb1 in Breeze::Style::standardIcon
    (this=<optimized out>, pixmap=<optimized out>, option=<optimized out>, widget=<optimized out>)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4_build/kstyle6/breeze6_autogen/EWIEGA46WW/../../../../breeze-6.1.4/kstyle/breezestyle.h:166
#4  0x00007ffff76b2aed in QProxyStyle::standardIcon(QStyle::StandardPixmap, QStyleOption const*, QWidget const*) const ()
    at /usr/lib64/libQt6Widgets.so.6
#5  0x00007ffff7543fd2 in ??? () at /usr/lib64/libQt6Widgets.so.6
#6  0x00007ffff7586da6 in ??? () at /usr/lib64/libQt6Widgets.so.6
#7  0x00007ffff7589582 in QMainWindow::menuBar() const () at /usr/lib64/libQt6Widgets.so.6
#8  0x00007ffff7f6de2f in Konsole::MainWindow::setupActions() () at /usr/lib64/libkonsoleapp.so.24.05.2
#9  0x00007ffff7f6fc1d in Konsole::MainWindow::MainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#10 0x00007ffff7f62243 in Konsole::Application::newMainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#11 0x00007ffff7f63588 in Konsole::Application::processWindowArgs(bool&) () at /usr/lib64/libkonsoleapp.so.24.05.2
#12 0x00007ffff7f6540a in Konsole::Application::newInstance() () at /usr/lib64/libkonsoleapp.so.24.05.2
#13 0x0000555555559426 in ??? ()
#14 0x00007ffff5e5e320 in ??? () at /usr/lib64/libc.so.6
#15 0x00007ffff5e5e3d9 in __libc_start_main () at /usr/lib64/libc.so.6
#16 0x0000555555559535 in ??? ()
(gdb)

What would you infer from this?

sokhapkin · Post by **sokhapkin** » Fri Sep 06, 2024 4:11 pm

tranquilcool wrote:
What would you infer from this?

Nothing

I rebuild qtbase with debug info and now see more details. Looks like the crash is inside QT library.

Code: Select all

Thread 1 "konsole" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ??? ()
#1  0x00007ffff6134fc9 in qt_memfill<unsigned int> (dest=0x555556c5cf40, color=0, count=64)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/painting/qdrawhelper_p.h:916
#2  0x00007ffff613184b in qt_rectfill<unsigned int> (dest=0x555556c5cf40, value=0, x=0, y=0, width=8, height=8, stride=32)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/painting/qdrawhelper_p.h:940
#3  0x00007ffff6125be7 in QImage::fill (this=0x555556c67960, pixel=0)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/image/qimage.cpp:1829
#4  0x00007ffff6125d81 in QImage::fill (this=0x555556c67960, color=...)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/image/qimage.cpp:1885
#5  0x00007ffff6176213 in QRasterPlatformPixmap::fill (this=0x555556c67930, color=...)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/image/qpixmap_raster.cpp:164
#6  0x00007ffff6172382 in QPixmap::fill (this=0x7fffffffd360, color=...)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/gui/image/qpixmap.cpp:878
#7  0x00007fffecee635d in Breeze::Style::toolBarExtensionIcon
    (this=0x555555619e10, standardPixmap=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x555557276390)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:8122
#8  0x00007fffecec77a4 in Breeze::Style::standardIconImplementation
    (this=0x555555619e10, standardPixmap=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x555557276390)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4/kstyle/breezestyle.cpp:2076
#9  0x00007fffece6c51c in Breeze::Style::standardIcon
    (this=0x555555619e10, pixmap=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x555557276390)
    at /var/tmp/portage/kde-plasma/breeze-6.1.4/work/breeze-6.1.4_build/kstyle6/breeze6_autogen/EWIEGA46WW/../../../../breeze-6.1.4/kstyle/breezestyle.h:166
#10 0x00007ffff7509a1b in QProxyStyle::standardIcon
    (this=0x5555555fde30, standardIcon=QStyle::SP_ToolBarHorizontalExtensionButton, option=0x0, widget=0x555557276390)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/widgets/styles/qproxystyle.cpp:380
#11 0x00007ffff72c6a2a in QMenuBarExtension::QMenuBarExtension (this=0x555555eeeee0, parent=0x555557276390)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/widgets/widgets/qmenubar.cpp:57
#12 0x00007ffff72c9692 in QMenuBarPrivate::init (this=0x55555725a870)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/widgets/widgets/qmenubar.cpp:678
#13 0x00007ffff72c98e6 in QMenuBar::QMenuBar (this=0x555557276390, parent=0x555556975eb0)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/widgets/widgets/qmenubar.cpp:711
#14 0x00007ffff728e7c6 in QMainWindow::menuBar (this=0x555556975eb0)
    at /var/tmp/portage/dev-qt/qtbase-6.7.2-r4/work/qtbase-everywhere-src-6.7.2/src/widgets/widgets/qmainwindow.cpp:470
#15 0x00007ffff7f6de2f in Konsole::MainWindow::setupActions() () at /usr/lib64/libkonsoleapp.so.24.05.2
#16 0x00007ffff7f6fc1d in Konsole::MainWindow::MainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#17 0x00007ffff7f62243 in Konsole::Application::newMainWindow() () at /usr/lib64/libkonsoleapp.so.24.05.2
#18 0x00007ffff7f63588 in Konsole::Application::processWindowArgs(bool&) () at /usr/lib64/libkonsoleapp.so.24.05.2
#19 0x00007ffff7f6540a in Konsole::Application::newInstance() () at /usr/lib64/libkonsoleapp.so.24.05.2
#20 0x0000555555559426 in ??? ()
#21 0x00007ffff505e320 in ??? () at /usr/lib64/libc.so.6
#22 0x00007ffff505e3d9 in __libc_start_main () at /usr/lib64/libc.so.6
#23 0x0000555555559535 in ??? ()
(gdb)

Post by **sam_** » Fri Sep 06, 2024 5:14 pm

Oh, you are both indeed hitting the same issue. Please file a bug first with KDE for ksvg and link it here. Describe the symptoms and include that backtrace.

sokhapkin · Post by **sokhapkin** » Fri Sep 06, 2024 8:00 pm

sam_ wrote:Oh, you are both indeed hitting the same issue. Please file a bug first with KDE for ksvg and link it here. Describe the symptoms and include that backtrace.

The problem is NOT related to ksvg. It is hardware related. I copied the root partition from my small amdgpu laptop (where plasma6 crashes) to an SD card (using "cp -avx / /mnt/sda1), copied default /dev files to /mnt/sda1/dev, inserted the card to my main PC and... It worked fine! I triple checked that I really booted from the SD card, not from main PC drive. The small laptop system was compiled on binhost machine with CFLAGS "-march=x86-64-v3", it runs on

Code: Select all

# cat /proc/cpuinfo 
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 112
model name      : AMD A9-9420e RADEON R5, 5 COMPUTE CORES 2C+3G
stepping        : 0
microcode       : 0x6006705
cpu MHz         : 1195.385
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 16
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm perfctr_core perfctr_nb bpext ptsc mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov
bugs            : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass retbleed
bogomips        : 3594.21
TLB size        : 1536 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro acc_power [13]

The main PC is an laptop too running on

Code: Select all

$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 140
model name      : 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
stepping        : 1
microcode       : 0xb6
cpu MHz         : 400.000
cache size      : 12288 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 27
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l2 cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves split_lock_detect user_shstk dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req vnmi avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq rdpid movdiri movdir64b fsrm avx512_vp2intersect md_clear ibt flush_l1d arch_capabilities
vmx flags       : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple pml ept_mode_based_exec tsc_scaling
bugs            : spectre_v1 spectre_v2 spec_store_bypass swapgs eibrs_pbrsb gds bhi
bogomips        : 5608.00
clflush size    : 64
cache_alignment : 64
address sizes   : 39 bits physical, 48 bits virtual
power management:

Post by **sam_** » Fri Sep 06, 2024 8:05 pm

That doesn't mean that ksvg (or qt) isn't to blame, though. Especially given two of you had a crash in the same function with a similar looking backtrace. But alright.

sokhapkin · Post by **sokhapkin** » Fri Sep 06, 2024 8:17 pm

sam_ wrote:That doesn't mean that ksvg (or qt) isn't to blame, though. Especially given two of you had a crash in the same function with a similar looking backtrace. But alright.

Well, to be honest, I don't want to open an account with KDE to report a bug. I already installed xfce on the small laptop and it works to me. KDE is a "nice to have" desktop environment, but not a "must have" to me.

tranquilcool · Post by **tranquilcool** » Sat Sep 07, 2024 6:30 am

I don’t understand why a hardware problem, not qt/ksvg, or video card/driver combo of this specific mobo.

localtoast · Post by **localtoast** » Mon Sep 09, 2024 2:06 pm

Bug report filed with KDE: https://bugs.kde.org/show_bug.cgi?id=492886

Please feel free to add details I've missed - I was trying to summarise what we all have as concisely as possible.

tranquilcool · Post by **tranquilcool** » Sun Sep 15, 2024 9:36 am

I compiled dev-qt/qtbase without -march in the CFLAGS (neither -march nor -mtune)

checkout this thread:

viewtopic-t-1170690.html

Thanks a lot @Ionen
Thanks everybody.

tranquilcool · Post by **tranquilcool** » Sun Sep 15, 2024 11:54 am

Special thanks to at @sam_
who demonstrated empathy, interest, help and encouragement
from the very fisrt day I brought up this problem.

Thanks to @ArsenArsen who chimed in.

Thanks to localtoast for his resilience and mutual encouragement.

Thanks to the gentoo community.

Post by **sam_** » Thu Sep 19, 2024 4:54 am

tranquilcool wrote:Special thanks to at @sam_
who demonstrated empathy, interest, help and encouragement
from the very fisrt day I brought up this problem.

Thanks to @ArsenArsen who chimed in.

Thanks to localtoast for his resilience and mutual encouragement.

Thanks to the gentoo community.

You're most welcome. Working with polite folks on interesting bugs is why I do this.