Hi all,

I have also been struggling with BOINC 7.18.1 from the repos on Mint 21 and Kubuntu 22.04.1 on my Core2Duo PC with Nvidia-340 binary drivers (9500 GT), always throwing "illegal instruction" when running it from terminal. I've spent quite some time for troubleshooting, documented in this thread:

https://forums.linuxmint.com/viewtopic.php?p=2252274#p2252274

Bottom line seems to be that this version of BOINC has been compiled to use GNUTLS rather than OpenSSL, if I'm not mistaken, and GNUTLS is not configured on the system.

I will try the PPA build mentioned earlier in this thread. I'll report back if it works.

By the way, I'm running a dual boot Win 8.1 with BOINC perfectly, but this OS' support will end in a week.

It works!

I followed the instructions for installing Gianfranco's PPA mentioned in this post: https://boinc.berkeley.edu/forum_thread.php?id=14792&postid=109888. I can now start the Boinc client and manager in Kubuntu 22.04.1, although no autostart yet. Will check this soon.

user@rkld:~$ boinc
08-Jan-2023 17:29:31 [---] cc_config.xml not found - using defaults
08-Jan-2023 17:29:31 [---] Starting BOINC client version 7.20.5 for x86_64-pc-linux-gnu
08-Jan-2023 17:29:31 [---] This a development version of BOINC and may not function properly
08-Jan-2023 17:29:31 [---] log flags: file_xfer, sched_ops, task
08-Jan-2023 17:29:31 [---] Libraries: libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2) libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.13
08-Jan-2023 17:29:31 [---] Data directory: /home/user
08-Jan-2023 17:29:31 [---] CUDA: NVIDIA GPU 0: GeForce 9500 GT (driver version 340.99, CUDA version 6.5, compute capability 1.1, 512MB, 512MB available, 130 GFLOPS peak)
08-Jan-2023 17:29:31 [---] OpenCL: NVIDIA GPU 0: GeForce 9500 GT (driver version 340.108, device version OpenCL 1.0 CUDA, 512MB, 512MB available, 130 GFLOPS peak)
08-Jan-2023 17:29:31 [---] libc:  version 2.35
08-Jan-2023 17:29:31 [---] Host name: rkld
08-Jan-2023 17:29:31 [---] Processor: 2 GenuineIntel Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz [Family 6 Model 23 Stepping 10]
08-Jan-2023 17:29:31 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm pti tpr_shadow vnmi flexpriority vpid dtherm
08-Jan-2023 17:29:31 [---] OS: Linux Ubuntu: Ubuntu 22.04.1 LTS [5.15.0-57-generic|libc 2.35]
08-Jan-2023 17:29:31 [---] Memory: 3.83 GB physical, 7.45 GB virtual
08-Jan-2023 17:29:31 [---] Disk: 27.30 GB total, 25.29 GB free
08-Jan-2023 17:29:31 [---] Local time is UTC +1 hours
08-Jan-2023 17:29:31 [---] No general preferences found - using defaults
08-Jan-2023 17:29:31 [---] Preferences:
08-Jan-2023 17:29:31 [---]    max memory usage when active: 1961.25 MB
08-Jan-2023 17:29:31 [---]    max memory usage when idle: 3530.25 MB
08-Jan-2023 17:29:31 [---]    max disk usage: 24.57 GB
08-Jan-2023 17:29:31 [---]    don't use GPU while active
08-Jan-2023 17:29:31 [---]    suspend work if non-BOINC CPU load exceeds 25%
08-Jan-2023 17:29:31 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
08-Jan-2023 17:29:31 [---] Setting up project and slot directories
dir_open: Could not open directory 'slots' from '/home/user'.
08-Jan-2023 17:29:31 [---] Checking active tasks
08-Jan-2023 17:29:31 [---] Setting up GUI RPC socket
08-Jan-2023 17:29:31 [---] Checking presence of 0 project files
08-Jan-2023 17:29:31 [---] This computer is not attached to any projects

Autostart fixed as well, incl. the gui_rpc_auth.cfg issue. I had to:

sudo systemctl enable boinc-client
sudo usermod -a -G boinc user
sudo chmod 664 /etc/boinc-client/gui_rpc_auth.cfg
sudo systemctl restart boinc-client

That was it! Client and Manager running fine, so this is solved for me. And the venerable Win8.1 may rest in peace.

Thanks!