My bitcoin core client on my ubuntu 16.04 (on a virtual machine) keep crashing..)

When started, it download some hundred of blocks and then crash.. always.

I try to delete all the data in the config directory, to redownload all the blockchain, but no-way.. it still crash.

Here the log messages about the crash

2016-04-30 14:24:52 *** System error while flushing: CDB: Error -30974, can't open database
2016-04-30 14:24:53 ERROR: ProcessNewBlock: ActivateBestChain failed
2016-04-30 14:24:53 receive version message: /Satoshi:0.11.2/: version 70002, blocks=409580, us=80.181.135.118:51467, peer=9
2016-04-30 14:24:53 tor: Thread interrupt
2016-04-30 14:24:53 addcon thread interrupt
2016-04-30 14:24:53 opencon thread interrupt
2016-04-30 14:24:53 scheduler thread interrupt
2016-04-30 14:24:53 msghand thread interrupt
2016-04-30 14:24:53 torcontrol thread exit
2016-04-30 14:24:53 net thread interrupt
2016-04-30 14:24:53 Shutdown: In progress...
2016-04-30 14:24:53 StopNode()
2016-04-30 14:24:53 *** System error while flushing: CDB: Error -30974, can't open database
2016-04-30 14:24:55 CDBEnv::EnvShutdown: Error -30974 shutting down database environment: DB_RUNRECOVERY: Fatal error, run database recovery
2016-04-30 14:24:55 Shutdown: done

Any idea?
Thanks =)

Hi all,
I'm here with my 280x toxic undervolted around 1100 mV and it's running very well: low temperature and consumption.

But I get a very annoying thing: if the board ceases temporarily to mine, either for the network or for the pool, automatic (I think) card's bios lowers the voltage for obvious reasons..
The recovery (not always, but sometimes) happens the "drama": the voltage is reset to factory default (1225 mV) and not to the one I set afterburner to say the least... stuff very annoying  ..

Do you have any suggestions on how to avoid or any workaround?
Thanks and good mining =)

Salve a tutti,
sono con la mia 280x toxic undervoltata intorno a 1100 mV e direi che va una meraviglia: consumi minori e temperatura molto più bassa.

Però mi capita una cosa molto fastidiosa: se la scheda smette temporaneamente di minare, vuoi per la rete vuoi per la pool, in automatico (credo) il bios della scheda abbassa il voltaggio per ovvi motivi..
Alla ripresa (non sempre, alle volte) accade il "dramma": il voltaggio viene rimesso al valore di fabbrica (1225 mV) e non a quello da me impostato su afterburner.. cosa a dir poco fastidiosa..

Avete qualche suggerimento su come evitare o arginare il problema?
Grazie e buon mining =)

In ufficio siamo riuscito ad fare l'overclock hardware di questo dispositivo USB: stiamo ancora facendo test, ma per ora stiamo stabilmente a 2.6 Gh/s con 0 errori.
Serve ovviamente ultieriore dissipazione.

Visto il costo base credo possa essere un aumento interessante visto anche il basso costo di realizzo.

Mi chiedo, a qualcuno che possiede tale dispositivo, potrebbe interessare questo overclock?

All know, many new alt coins are coming and more will come.
To mine them in the first minutes/hours in most cases it mean to have a great gain in term of coins..

So I create a software that mail me when new a coin (or its pre-annunce) pop up on the forum.

If anyone is interted PM me =)

If I will see many will be interested I will post more informations.

Good mining!