For some reasons I had to remove my Berkeley installation of BOINC and reinstall as a distribution with:

sudo apt-get install boinc-nvidia-cuda

Now, I run boinc and the previous configuration is messing things up, because the client looks for the data files in my home folder (/home/yacob), maybe because before they where in /home/yacob/BOINC.

30-Sep-2015 17:17:24 [---] cc_config.xml not found - using defaults
30-Sep-2015 17:17:24 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
30-Sep-2015 17:17:24 [---] log flags: file_xfer, sched_ops, task
30-Sep-2015 17:17:24 [---] Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
30-Sep-2015 17:17:24 [---] Data directory: /home/yacob
execv: No such file or directory
30-Sep-2015 17:17:24 [---] GPU detection failed. error code 512
30-Sep-2015 17:17:24 [---] No usable GPUs found
30-Sep-2015 17:17:24 [---] Creating new client state file
30-Sep-2015 17:17:24 [---] Host name: saturn
30-Sep-2015 17:17:24 [---] Processor: 12 GenuineIntel Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz [Family 6 Model 63 Stepping 2]
30-Sep-2015 17:17:24 [---] 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 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
30-Sep-2015 17:17:24 [---] OS: Linux: 3.13.0-65-generic
30-Sep-2015 17:17:24 [---] Memory: 31.35 GB physical, 32.23 GB virtual
30-Sep-2015 17:17:24 [---] Disk: 1.33 TB total, 361.62 GB free
30-Sep-2015 17:17:24 [---] Local time is UTC -4 hours
30-Sep-2015 17:17:24 [---] VirtualBox version: WARNING: The vboxdrv kernel module is not loaded. Either there is no module
30-Sep-2015 17:17:24 [---] No general preferences found - using defaults
30-Sep-2015 17:17:24 [---] Preferences:
30-Sep-2015 17:17:24 [---]    max memory usage when active: 16050.54MB
30-Sep-2015 17:17:24 [---]    max memory usage when idle: 28890.97MB
30-Sep-2015 17:17:24 [---]    max disk usage: 361.52GB
30-Sep-2015 17:17:24 [---]    don't use GPU while active
30-Sep-2015 17:17:24 [---]    suspend work if non-BOINC CPU load exceeds 25%
30-Sep-2015 17:17:24 [---]    (to change preferences, visit a project web site or select Preferences in the Manager)
dir_open: Could not open directory 'slots' from '/home/yacob'.

To reinstall, first I tried to remove all traces of boinc with:

sudo apt-get remove boinc-nvidia-cuda
sudo apt-get purge boinc-nvidia-cuda
sudo apt-get autoremove
sudo rm -r /etc/boinc-client /var/lib/boinc-client /etc/init.d/boinc-client /etc/default/boinc-client /usr/bin/boinc*

And removing any folder or file in my home that was generated.
But after reinstall I am still getting the same error.
Does anybody know where the information about where BOINC is going to be installed is stored?
Am I missing any file to delete during the removal?
How could I fix this?

Thanks!

Yacob

Installing BOINC as a package uses different directories than installing BOINC with the Berkeley installer.

To see all the differences, check http://boinc.berkeley.edu/wiki/Installing_BOINC#Linux.

---

The admin customizable path is in /etc/default/boinc-client and fall-back default in /etc/init.d/boinc-client. The default path in both files is /var/lib/boinc-client. Also, the client should be starting automatically when the OS starts up.

So, how do you start BOINC and/or Manager?

I turns out I only had to reboot the computer after removing all these files to remove teh old specs from memory, I guess...
I haven't done it, funny :)

Thanks to all.