Fails to install 8.1, though no error messages

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I've tried 3 time now to install 8.1 to my server (1and1 hosted) and each time it has resulted in the same thing:- the installation appears to be going OK (all tests get ticked) and it spends a bit of time saying 'Installing Blocks' and then the screen goes blank and the browser Tab says 'connecting'. When I eventually get bored waiting (after several hours) and go back to the site, it tries to start the install again, except the database is not now empty.

After each failed attempt I drop all tables from the database, which seems to have been populated OK.

The first attempt was asking for sample data, with file permissions set at 755
The second time was for just a clean install, with file permissions set at 755
The third attempt was asking for sample data, with file permissions set at 777

By default the file permissions were set at 705 which the installation process seemed happy about, though I changed them anyway, though not recursively.

Linux server, PHP 5.6, MySQL 5.1

Any ideas?

[later] A little bit more on this, I just went throungh exacvtly the same process to install 5.7.5.13 (with sample data) and no problems.

 
Gondwana replied on at Permalink Reply
Gondwana
Ensure php max_execution_time is long.
Doki replied on at Permalink Reply
Doki
It may also be worth checking the Apache error logs. You can (usually) find them on /var/log/httpd/error_log in Red Hat or ask your host to show you where they are/provide them.