doertel

[doertel]

Hi,
here is the output:


root@sepia:/home/detlef# for DEVNAME in /dev/dri/* ; do LIBVA_DRIVER_NAME=nvidia vainfo --display drm --device $DEVNAME ; done
Failed to open the given device!
libva info: VA-API version 1.20.0
libva info: User environment variable requested driver 'nvidia'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_1_0
Speicherzugriffsfehler (Speicherabzug geschrieben)
libva info: VA-API version 1.20.0
libva info: User environment variable requested driver 'nvidia'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_1_0
Speicherzugriffsfehler (Speicherabzug geschrieben)


“Speicherzugriffsfehler (Speicherabzug geschrieben)” means: “Access Violation – crash dump written”

Can I do any thing else for you ?
detlef

[doertel]

Hi,
here is the gdb output:

Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x0000000000000000 in ?? ()
[Current thread is 1 (Thread 0x7785554006c0 (LWP 185065))]
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x0000778529c02357 in vaDisplayIsValid () from /lib/x86_64-linux-gnu/libva.so.1
#2 0x0000778529c03839 in vaInitialize () from /lib/x86_64-linux-gnu/libva.so.1
#3 0x000077857244a0b9 in VADecoder::openDisplayDRM() () from /usr/NX/lib/libnxcim.so
#4 0x000077857244a289 in VADecoder::openDisplay() () from /usr/NX/lib/libnxcim.so
#5 0x000077857244a8b3 in VADecoder::initialize() () from /usr/NX/lib/libnxcim.so
#6 0x000077857244a9ad in VADecoder::preinitialize(_NXVideoContext*, VALibrary*) () from /usr/NX/lib/libnxcim.so
#7 0x000077857244f1f7 in VAUnpackInit(_NXVideoContext*) () from /usr/NX/lib/libnxcim.so
#8 0x000077857244f559 in VATestDecode() () from /usr/NX/lib/libnxcim.so
#9 0x000077857244f5fd in VALoadLibrary() () from /usr/NX/lib/libnxcim.so
#10 0x0000778572452083 in AVCCodecFunctions::AVCLoadVA() () from /usr/NX/lib/libnxcim.so
#11 0x00007785724584aa in AVCCodecFunctions::AVCSupportedMethods(int, int) () from /usr/NX/lib/libnxcim.so
#12 0x0000778571ee2ab1 in ServerChannel::handleEncode(ChannelEncoder*, unsigned char const*, unsigned int) () from /usr/NX/lib/libnxc.so
#13 0x0000778571e9af19 in ChannelBase::dataMessage(char*, int) () from /usr/NX/lib/libnxc.so
#14 0x00007785718c2708 in Reader::consumeMessage(int&) () from /usr/NX/lib/libnx.so
#15 0x00007785718c2f46 in Reader::readMessage() () from /usr/NX/lib/libnx.so
#16 0x00007785718888fe in DispatchFdList::callRunnables(IoRecord const*) () from /usr/NX/lib/libnx.so
#17 0x000077857189ff51 in Dispatcher::innerDispatch() () from /usr/NX/lib/libnx.so
#18 0x00007785718a0e88 in Dispatcher::innerLoop() () from /usr/NX/lib/libnx.so
#19 0x00007785718a10d0 in Dispatcher::dispatch(int) () from /usr/NX/lib/libnx.so
#20 0x00007785718f1a5c in Threadable::loop(void*) () from /usr/NX/lib/libnx.so
#21 0x000077856c49ca94 in start_thread (arg=) at ./nptl/pthread_create.c:447
#22 0x000077856c529c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
(gdb)

Yes – I missed to close the player completely.
With:

"Enable hardware accelerated decoding" value="disabled"

there is no more crash. So the core dump above was made with:

"Enable hardware accelerated decoding" value="true"

Thanks.
Can I do any thing else for you ?
detlef

[doertel]

Hi,

I hope this is what you mean with backtrace :

root@sepia:/var/log# gdb /usr/NX/bin/nxplayer.bin /var/lib/apport/coredump/core._usr_NX_bin_nxplayer_bin.1000.d8a09b5a-40cf-43fe-9a56-7b5e1c51c2d0.461137.2941256
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Reading symbols from /usr/NX/bin/nxplayer.bin…
(No debugging symbols found in /usr/NX/bin/nxplayer.bin)

warning: Can’t open file /memfd:/.glXXXXXX (deleted) during file-backed mapping note processing

warning: Can’t open file /memfd:/.nvidia_drv.XXXXXX (deleted) during file-backed mapping note processing
[New LWP 461301]
[New LWP 461150]
[New LWP 461142]
[New LWP 461161]
[New LWP 461160]
[New LWP 461156]
[New LWP 461295]
[New LWP 461137]
[New LWP 461313]
[New LWP 461298]
[New LWP 461297]
[New LWP 461170]
[New LWP 461320]
[New LWP 461296]
[New LWP 461316]
[New LWP 461299]
[New LWP 461321]
[New LWP 461164]
[New LWP 461312]
[New LWP 461181]
[New LWP 461318]
–Type for more, q to quit, c to continue without paging–
[New LWP 461162]
[New LWP 461319]
[New LWP 461322]
[New LWP 461300]
[New LWP 461317]
[New LWP 461315]
[New LWP 461314]
[New LWP 461324]
[New LWP 461323]
[New LWP 461325]
[New LWP 461326]
[New LWP 461327]

warning: could not find ‘.gnu_debugaltlink’ file for /lib/x86_64-linux-gnu/libpulse.so.0

warning: could not find ‘.gnu_debugaltlink’ file for /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-16.1.so

warning: could not find ‘.gnu_debugaltlink’ file for /lib/x86_64-linux-gnu/libcap.so.2
[Thread debugging using libthread_db enabled]
Using host libthread_db library “/lib/x86_64-linux-gnu/libthread_db.so.1”.
Core was generated by `/usr/NX/bin/nxplayer.bin –session /home/detlef/.nx/cache/d8f21156-8652-4186-a6′.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000000000000000 in ?? ()
[Current thread is 1 (Thread 0x78f22be006c0 (LWP 461301))]
(gdb)

By the way:
The problem occurs not only when I connect to a KDE machine. It is the same while connecting to macOS box or a Windows. I
So I think it is completely a client side problem which is related to the nvidia graphic driver

Can I do anything else ?
Thanks

detlef

[doertel]

After

sudo /usr/NX/bin/nxserver –eglcapture yes
[sudo] Passwort für detlef:
NX> 900 EnableEGLCapture key set to: 1.
NX> 900 Enabled EGL screen capture in ‘/usr/lib/x86_64-linux-gnu/libexec/plasma-dbus-run-session-if-needed’.

I still have the same behavior.
syslog:
2024-10-04T12:35:41.285050+02:00 sepia kernel: nxplayer.bin[200815]: segfault at 0 ip 0000000000000000 sp 000071d0fcdff5f8 error 14 in nxplayer.bin[400000+63d000] likely on CPU 8 (core 2, s
ocket 0)
2024-10-04T12:35:41.285062+02:00 sepia kernel: Code: Unable to access opcode bytes at 0xffffffffffffffd6.
2024-10-04T12:37:03.178268+02:00 sepia systemd[7080]: app-NoMachine\x2dbase-c4e1f44c4565493bb1a9405231314ceb.scope: Consumed 4.224s CPU time.

any further idea ?

[Author]

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