xdarma, se vuoi ricomiciare da zero.....
i driver in uso sono nvidia 352.63
ho provato i consigli di rattorosso digitando
xhost si:localuser:boinc e poi sudo service boinc-client restart ma niente, sempre no usable gpu found come dice il Log eventi che riporto nuovamente
mar 27 set 2016 16:21:15 CEST | | Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
mar 27 set 2016 16:21:15 CEST | | log flags: file_xfer, sched_ops, task
mar 27 set 2016 16:21:15 CEST | | Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
mar 27 set 2016 16:21:15 CEST | | Data directory: /var/lib/boinc-client
mar 27 set 2016 16:21:15 CEST | | No usable GPUs found
mar 27 set 2016 16:21:15 CEST | | Host name: marco-desktop
mar 27 set 2016 16:21:15 CEST | | Processor: 8 AuthenticAMD AMD FX(tm)-8350 Eight-Core Processor [Family 21 Model 2 Stepping 0]
mar 27 set 2016 16:21:15 CEST | | Processor features: 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 nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 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 topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold vmmcall bmi1
mar 27 set 2016 16:21:15 CEST | | OS: Linux: 3.19.0-32-generic
mar 27 set 2016 16:21:15 CEST | | Memory: 7.70 GB physical, 976.00 MB virtual
mar 27 set 2016 16:21:15 CEST | | Disk: 27.57 GB total, 11.27 GB free
mar 27 set 2016 16:21:15 CEST | | Local time is UTC +2 hours
mar 27 set 2016 16:21:15 CEST | | VirtualBox version: 5.0.2r102096
mar 27 set 2016 16:21:15 CEST | | Config: GUI RPCs allowed from:
mar 27 set 2016 16:21:15 CEST | ATLAS@home | URL
atlasathome.cern.ch/; Computer ID 56800; resource share 100
mar 27 set 2016 16:21:15 CEST | LHC@home 1.0 | URL
lhcathomeclassic.cern.ch/sixtrack/; Computer ID 10401935; resource share 100
mar 27 set 2016 16:21:15 CEST | VirtualLHC@home | URL
lhcathome2.cern.ch/vLHCathome/; Computer ID 98606; resource share 100
mar 27 set 2016 16:21:15 CEST | SETI@home | URL
setiathome.berkeley.edu/; Computer ID 8088526; resource share 100
mar 27 set 2016 16:21:15 CEST | Einstein@Home | URL
einstein.phys.uwm.edu/; Computer ID 12409840; resource share 100
mar 27 set 2016 16:21:15 CEST | SETI@home | General prefs: from SETI@home (last modified 11-Mar-2015 09:34:31)
mar 27 set 2016 16:21:15 CEST | SETI@home | Host location: none
mar 27 set 2016 16:21:15 CEST | SETI@home | General prefs: using your defaults
mar 27 set 2016 16:21:15 CEST | | Reading preferences override file
mar 27 set 2016 16:21:15 CEST | | Preferences:
mar 27 set 2016 16:21:15 CEST | | max memory usage when active: 3942.23MB
mar 27 set 2016 16:21:15 CEST | | max memory usage when idle: 7096.02MB
mar 27 set 2016 16:21:15 CEST | | max disk usage: 19.24GB
mar 27 set 2016 16:21:15 CEST | | (to change preferences, visit a project web site or select Preferences in the Manager)
mar 27 set 2016 16:21:15 CEST | | gui_rpc_auth.cfg is empty - no GUI RPC password protection
mar 27 set 2016 16:21:15 CEST | | Not using a proxy
mar 27 set 2016 16:25:09 CEST | Einstein@Home | work fetch resumed by user
mar 27 set 2016 16:25:21 CEST | Einstein@Home | update requested by user
mar 27 set 2016 16:25:26 CEST | Einstein@Home | Sending scheduler request: Requested by user.
mar 27 set 2016 16:25:26 CEST | Einstein@Home | Not requesting tasks: don't need
mar 27 set 2016 16:25:28 CEST | Einstein@Home | Scheduler request completed
mar 27 set 2016 16:25:28 CEST | Einstein@Home | Generated new computer cross-project ID: 8f98dc9f7aae7e69b6c1e49b9e63ba0c
mar 27 set 2016 16:29:36 CEST | ATLAS@home | work fetch resumed by user
mar 27 set 2016 16:30:00 CEST | SETI@home | work fetch resumed by user
mar 27 set 2016 16:30:15 CEST | VirtualLHC@home | work fetch resumed by user