Drupal 7.22 doesnt work with php 5.4.3 and mysql 5.5.24!
Error: SQLSTATE <2054> The server requested authentication method umknown to the client.

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caw67’s picture

caw67 CreditAttribution: caw67 commented

Warning: PDO::__construct(): The server requested authentication method unknown to the client [mysql_old_password] in /public_html/includes/database/database.inc on line 304

ufku’s picture

ufku CreditAttribution: ufku commented
Title: 5.4.3 » Mysql error 2054: Authentication method unknown to the client
Version: 7.22 » 7.x-dev
Assigned: caw67 » Unassigned

Recently faced a similar issue which only occurs for PDO. Not sure this is specific to Drupal.