Bug 1254461 - Wi-Fi band-locking doesn't work
Summary: Wi-Fi band-locking doesn't work
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: NetworkManager
Version: 7.2
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Jirka Klimes
QA Contact: Desktop QE
Depends On:
TreeView+ depends on / blocked
Reported: 2015-08-18 08:10 UTC by Jirka Klimes
Modified: 2016-01-04 06:05 UTC (History)
6 users (show)

Fixed In Version: NetworkManager-1.0.4-10.el7
Doc Type: Bug Fix
Doc Text:
Due to a bug in NetworkManager, it was not previously possible to set the Wi-Fi band to the "a" or "bg" values to lock to a specific frequency band. NetworkManager has been fixed, and it now sets the wpa_supplicant's "freq_list" option correctly, which enables proper Wi-Fi band locking.
Clone Of:
Last Closed: 2015-11-19 11:03:11 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:2315 normal SHIPPED_LIVE Moderate: NetworkManager security, bug fix, and enhancement update 2015-11-19 10:06:58 UTC

Description Jirka Klimes 2015-08-18 08:10:54 UTC
NetworkManager can only use Wi-Fi band "a" or "bg" if the 802-11-wireless.band property is set. It is done via specifying allowed frequences to wpa_supplicant.

It does not work as expected though. NetworkManager sets wpa_supplicant's 'freq_list' option as comma-separated frequences, but wpa_supplicant expects space-separated list.

Comment 1 Jirka Klimes 2015-08-18 08:14:03 UTC
See upstream bug https://bugzilla.gnome.org/show_bug.cgi?id=627571#c11
and branch jk/freq-list-bgo627571 for a fix.

Comment 2 Jirka Klimes 2015-08-21 09:02:37 UTC
Let's put the following commit to RHEL 7.2
c8b5b5e supplicant: wpa_supplicant wants space-separated list in freq_list (bgo #627571)
It fixes the bug. The rest of the upstream branch will get into RHEL when we rebase to NM 1.0.6.

Comment 4 Vitezslav Humpa 2015-10-04 16:07:21 UTC
Verified band locking works by a series of automated test on several different wireless HW devices available.

Comment 5 errata-xmlrpc 2015-11-19 11:03:11 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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