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White Screen?

  1. 11 years ago

    gspence

    30 Nov 2012

    Hello!
    We installed FOP2 on a new install of FreePBX distro 1.1818.210.62 last week and I have to say, I'm absolutely loving it! Install was a breeze, and the GUI is awesome. Thanks for a great product.

    The problem that we're running into is that intermittently the page will stop working for a few minutes and only display a blank white screen. Refreshing the page shows the GUI for half a second, then it disappears and goes back to a blank page. This lasts for a few minutes, then it goes back to normal. As far as I can tell this is totally random, but I don't know if there's something going on in the background that I might not be aware of. We've got about a dozen people using FOP2 and as you can imagine, it's very annoying when it disappears like this.

    Any thoughts on where to start with this? Are there logs somewhere that I might look at? Is this a known issue?

    Thanks,
    Gord

  2. admin

    30 Nov 2012 Administrator

    Hi,

    Its the first time someone reports that behavior. It would be nice to check if fop2_server is running when you see the blank screen, on the server command line you can type

    pgrep fop2

    if it returns a number, then it is indeed running. Also, what browser are you using? Does this happen with any browser?

  3. gspence

    3 Dec 2012

    I think almost everyone is using Firefox - whatever the most recent version is (16/17?).
    The service does not appear to stop, however when I restart ("service fop2 restart") it that seems to fix the issue for a while.

    I'll try watching for it in Chrome to see if it happens there too.

  4. gspence

    3 Dec 2012

    Just confirmed with the staff here - IE is seeing the same thing as well.

  5. gspence

    3 Dec 2012

    Finally caught it happening just now. It doesn't just get stuck at a white screen - it actually shows the FOP2 panel every 10 seconds exactly (watched it against a clock) for just a moment (maybe a quarter of a second).

  6. admin

    13 Dec 2012 Administrator

    If you add or remove an extension into asterisk and then apply changes in freepbx, fop2 will be refreshed, the screen will go white for a while until it loads the application and new button layout again.

    Are you adding/removing extensions or working on the freepbx gui all the time?

  7. gspence

    20 Dec 2012

    No, I don't even have the GUI open most of the time.

    I'm wondering if it might be a problem with using the latest version of the FOP2 manager from this website versus FreePBX's repo version?

  8. Syntax42

    13 May 2013

    I think I was I having the same issue, but not quite as bad as gspence. The browser window would go white for a few seconds every ten seconds or so.

    It started after I installed a firewall with a transparent proxy. Apparently, proxy servers are not always friendly to WebSocket connections. The solution for me was to disable websockets in /var/www/html/fop2/js/presence.js then reload the page.

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