Hi.
I'm getting this error:

Your app_info.xml file doesn't have a usable version of SETI@home v8.

This is the event log:

Fri 14 Feb 2020 12:25:30 AM CST |  | Starting BOINC client version 7.9.3 for x86_64-pc-linux-gnu
Fri 14 Feb 2020 12:25:30 AM CST |  | log flags: file_xfer, sched_ops, task
Fri 14 Feb 2020 12:25:30 AM CST |  | Libraries: libcurl/7.58.0 OpenSSL/1.1.1 zlib/1.2.11 libidn2/2.0.4 libpsl/0.19.1 (+libidn2/2.0.4) nghttp2/1.30.0 librtmp/2.3
Fri 14 Feb 2020 12:25:30 AM CST |  | Data directory: /var/lib/boinc-client
Fri 14 Feb 2020 12:25:30 AM CST |  | OpenCL: AMD/ATI GPU 0: Radeon RX 580 Series (driver version 3004.6, device version OpenCL 1.2 AMD-APP (3004.6), 6207MB, 6207MB available, 6502 GFLOPS peak)
Fri 14 Feb 2020 12:25:30 AM CST | SETI@home | Found app_info.xml; using anonymous platform
Fri 14 Feb 2020 12:25:30 AM CST |  | [libc detection] gathered: 2.27, Ubuntu GLIBC 2.27-3ubuntu1
Fri 14 Feb 2020 12:25:30 AM CST |  | Host name: ubuntu18
Fri 14 Feb 2020 12:25:30 AM CST |  | Processor: 16 AuthenticAMD AMD Ryzen 7 2700X Eight-Core Processor [Family 23 Model 8 Stepping 2]
Fri 14 Feb 2020 12:25:30 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 cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca
Fri 14 Feb 2020 12:25:30 AM CST |  | OS: Linux Ubuntu: Ubuntu 18.04.4 LTS [5.0.0-23-generic|libc 2.27 (Ubuntu GLIBC 2.27-3ubuntu1)]
Fri 14 Feb 2020 12:25:30 AM CST |  | Memory: 15.67 GB physical, 2.00 GB virtual
Fri 14 Feb 2020 12:25:30 AM CST |  | Disk: 123.36 GB total, 102.83 GB free
Fri 14 Feb 2020 12:25:30 AM CST |  | Local time is UTC -6 hours
Fri 14 Feb 2020 12:25:30 AM CST |  | Config: GUI RPCs allowed from:
Fri 14 Feb 2020 12:25:30 AM CST | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 8897750; resource share 100
Fri 14 Feb 2020 12:25:30 AM CST |  | No general preferences found - using defaults
Fri 14 Feb 2020 12:25:30 AM CST |  | Reading preferences override file
Fri 14 Feb 2020 12:25:30 AM CST |  | Preferences:
Fri 14 Feb 2020 12:25:30 AM CST |  | max memory usage when active: 8024.26 MB
Fri 14 Feb 2020 12:25:30 AM CST |  | max memory usage when idle: 14443.66 MB
Fri 14 Feb 2020 12:25:30 AM CST |  | max disk usage: 102.73 GB
Fri 14 Feb 2020 12:25:30 AM CST |  | don't use GPU while active
Fri 14 Feb 2020 12:25:30 AM CST |  | suspend work if non-BOINC CPU load exceeds 25%
Fri 14 Feb 2020 12:25:30 AM CST |  | (to change preferences, visit a project web site or select Preferences in the Manager)
Fri 14 Feb 2020 12:25:30 AM CST |  | Setting up project and slot directories
Fri 14 Feb 2020 12:25:30 AM CST |  | Checking active tasks
Fri 14 Feb 2020 12:25:30 AM CST |  | Setting up GUI RPC socket
Fri 14 Feb 2020 12:25:30 AM CST |  | gui_rpc_auth.cfg is empty - no GUI RPC password protection
Fri 14 Feb 2020 12:25:30 AM CST |  | Checking presence of 6 project files
Fri 14 Feb 2020 12:25:30 AM CST |  | Suspending GPU computation - computer is in use
Fri 14 Feb 2020 12:25:30 AM CST | SETI@home | Sending scheduler request: To fetch work.
Fri 14 Feb 2020 12:25:30 AM CST | SETI@home | Requesting new tasks for CPU
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | Scheduler request completed: got 0 new tasks
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | No tasks sent
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | No tasks are available for AstroPulse v7
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | No tasks are available for SETI@home v8
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | Message from server: Your app_info.xml file doesn't have a usable version of SETI@home v8.
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | Tasks for NVIDIA GPU are available, but your preferences are set to not accept them
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | Tasks for Intel GPU are available, but your preferences are set to not accept them
Fri 14 Feb 2020 12:25:33 AM CST | SETI@home | This computer has finished a daily quota of 1 tasks

This is a freshly installed Ubuntu 18.04.3 with it's Kernel downgraded in order for the AMDGPU-PRO drivers to compile. No I don't have any enhanced client installed. BOINC Manager v. 7.9.3, boinc-app-seti-graphics v. 8.00 SVN 3701-1. Everything was installed from my package manager, except for the AMDGPU-PRO package.

It's been ages since I installed SETI@home (my first work unit is from 1999) so I have no idea what changed or why do I need that xml to exist (which exists, btw).

Thank you for your input.

It's been ages since I installed SETI@home (my first work unit is from 1999) so I have no idea what changed or why do I need that xml to exist (which exists, btw).

Delete the app_info.xml file, and your system will then download the stock applications and start using them (although it will take a while as you've trashed quite a few WUs and are presently limited to just 1 WU per day). As you process & return work, and it is Validated, the daily limit will increase quickly.

App_info.xml is only needed when running Anonymous Platform, and any package you download that makes use of it should state explicitly that is the case, and have a readme file with instructions on editing the app_info.xml file to use the applications your hardware configuration requires.

---

Grant
Darwin NT

I seem to remember just deleting app_info.xml doesn't cut it as the information is then still inherent in client_state.xml

So after removing it, and a BOINC client restart, reset the project. That should get things moving.

I seem to remember just deleting app_info.xml doesn't cut it as the information is then still inherent in client_state.xml

So after removing it, and a BOINC client restart, reset the project. That should get things moving.

Yeah, my instructions were somewhat incomplete. Sorry.
Delete app_info.xml, exit BOINC & then restart BOINC (or exit, delete, restart). That should get it to start using the stock applications (as newly processed work validates and you can get more each 24hrs). If not, then the Reset as Jord suggested should take care of any other blocks to getting new work (other than the present 24hr limit).

---

Grant
Darwin NT

I was about to delete the xml, (I cold booted today, shutdown the computer yesterday) and I opened the manager out of curiosity and the error was gone, however now all my tasks have computational error.
I decided to start fresh and reinstalled everything piece by piece.
After installing Boinc Manager and nothing else, SETI started running!
But just installing boinc-app-seti-graphics, the computational errors started popping up again!

So I think the problem is that the package manager has conflicting BOINC programs:

boinc- manager 7.9.3 which installs boinc-client and can process data, it even hooks with the opencl client and uses my AMD GPU, but fails to show any graphics.
boinc-app-seti and boinc-app-seti-graphics 8.0.0 SVN in which the former is the CLI version and the latter is, supposedly the GUI version. Upon installing this one, there aren't any launchers generated and running boinc on a CLI tries to open the RPC GUI but fails because of a permissions error using port 31416.