I cannot get the gpu to work in linux. I have an amd 6450.
I have linux mint 17.1 64 bit with the fglrx-updates and fglrx-amdcccl-udates drivers installed (as per packet managers suggestions). In synaptic package manager I have installed everything that pertains to opencl as well.
help!

Fri 26 Dec 2014 06:35:57 AM CST | | Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
Fri 26 Dec 2014 06:35:57 AM CST | | log flags: file_xfer, sched_ops, task
Fri 26 Dec 2014 06:35:57 AM CST | | Libraries: libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
Fri 26 Dec 2014 06:35:57 AM CST | | Data directory: /var/lib/boinc-client
Fri 26 Dec 2014 06:35:57 AM CST | | GPU detection failed. error code 65280
Fri 26 Dec 2014 06:35:57 AM CST | | No usable GPUs found
Fri 26 Dec 2014 06:35:57 AM CST | SETI@home | Found app_info.xml; using anonymous platform
Fri 26 Dec 2014 06:35:57 AM CST | | Host name: AMD8150
Fri 26 Dec 2014 06:35:57 AM CST | | Processor: 8 AuthenticAMD AMD FX(tm)-8150 Eight-Core Processor [Family 21 Model 1 Stepping 2]
Fri 26 Dec 2014 06:35:57 AM CST | | 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 cx16 sse4_1 sse4_2 popcnt aes xsave avx lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 nodeid_msr topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
Fri 26 Dec 2014 06:35:57 AM CST | | OS: Linux: 3.16.0-25-generic
Fri 26 Dec 2014 06:35:57 AM CST | | Memory: 7.69 GB physical, 10.92 GB virtual
Fri 26 Dec 2014 06:35:57 AM CST | | Disk: 29.48 GB total, 20.02 GB free
Fri 26 Dec 2014 06:35:57 AM CST | | Local time is UTC -6 hours
Fri 26 Dec 2014 06:35:57 AM CST | | VirtualBox version: WARNING: The vboxdrv kernel module is not loaded. Either there is no module
Fri 26 Dec 2014 06:35:57 AM CST | | Config: GUI RPCs allowed from:
Fri 26 Dec 2014 06:35:57 AM CST | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 7372114; resource share 100
Fri 26 Dec 2014 06:35:57 AM CST | | No general preferences found - using defaults
Fri 26 Dec 2014 06:35:57 AM CST | | Reading preferences override file
Fri 26 Dec 2014 06:35:57 AM CST | | Preferences:
Fri 26 Dec 2014 06:35:57 AM CST | | max memory usage when active: 3937.29MB
Fri 26 Dec 2014 06:35:57 AM CST | | max memory usage when idle: 7087.13MB
Fri 26 Dec 2014 06:35:57 AM CST | | max disk usage: 19.93GB
Fri 26 Dec 2014 06:35:57 AM CST | | suspend work if non-BOINC CPU load exceeds 100%
Fri 26 Dec 2014 06:35:57 AM CST | | (to change preferences, visit a project web site or select Preferences in the Manager)
Fri 26 Dec 2014 06:35:57 AM CST | | gui_rpc_auth.cfg is empty - no GUI RPC password protection
Fri 26 Dec 2014 06:35:57 AM CST | | Not using a proxy

PS in windows 7 this works flawlessly.

Found this post by Ageless from 3 days ago over on the BOINC forums showing the same GPU detection error 65280. Looks like you are missing the OpenCL component of your drivers required for crunching.