'Check for Updates...' does not work via proxy. System output: Status: 'Checking for an update failed.'. Description: 'Error reading data from the Internet. Server error message: Could not create SSL connection through proxy server: 200 Connection established.' HTTP 200 Connection established sounds good but functionality is not working. Expected behavior: use system proxy and update. Proxy is basic install of Squid, nothing fancy, not auth required.
Looks like a duplicate of bug 33697. If not, please explain and Unconfirmed. *** This bug has been marked as a duplicate of bug 33697 ***
It's not the same bug as 33697. That one is about not being able to select / use proxy setting. Setting the proxy works fine. The issue: the update process is using the proxy, THEN things go wrong: 200 Connection established && SSL connection through proxy server.
*** This bug has been marked as a duplicate of bug 127649 ***