The Sound and Display settings screens in B2G builds that are built against mozilla-central are broken (blank) and render the phone unusable until rebooted if the user tries to view them. The console contains this error: JavaScript error: app://settings.gaiamobile.org/js/settings.js, line 294: ranges[i].refresh is not a function The issue is that the polyfill code for <input type=range> adds a refresh() method to the element that replaces the <input>, and some code calls that without checking if the element is a native implementation or the polyfill. The pref to enable native <input type=range> was flipped on in bug 841948.

I'm making the code work in the case where the native <input type=range> is both enabled and disabled (rather than removing the polyfill) since the gaia code has to work with both older and newer gecko trees for now.

Comment on attachment 728661 [details] [diff] [review] patch Forwarding review to someone who might know the code.

Pull request is here: https://github.com/mozilla-b2g/gaia/pull/8784

Comment on attachment 728661 [details] [diff] [review] patch Review of attachment 728661 [details] [diff] [review]: ----------------------------------------------------------------- https://github.com/mozilla-b2g/gaia/commit/1eb7430d65e7ae1c355b758fbc18ec3f00c5e57e

Need this one for v1.1.0hd (related to https://bugzilla.mozilla.org/show_bug.cgi?id=854469)

Please, see comment 6 ^^ : https://bugzilla.mozilla.org/show_bug.cgi?id=854138#c6

Landed in v1.1.0hd: https://github.com/mozilla-b2g/gaia/commit/40a1cf0e29c633a879513b261af0340b69231f7b