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Description of problem: as shown on attached picture, there are no signal levels of non-connected networks in nm-applet after switch to wifi-wext-only=true in NetworkManager.conf I can see them back again. Version-Release number of selected component (if applicable): NetworkManager-0.8.1-15.el6.x86_64 kernel-2.6.32-216.el6.bz750350.4.x86_64 wpa_supplicant-0.7.3-2.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.plug in ZyDas Zyxel AG-220 USB wireless dongle 2.open nm-applet Actual results: no signal levels Expected results: correct signal levels as before when using wext driver Additional info:
Created attachment 532272 [details] no signal in nm-applet screenshot
rt2500usb looks fine will try another drivers to see if this is somehow generic issue
This will be an issue with adm8211, at76, rtl818x, and zd1211rw drivers. They don't report signal strength in dBm, but instead in "unspecified" units that are somewhat ambiguous. NM's report is due to a bug in wpa_supplicant (still present upstream in git master): } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); r->flags |= WPA_SCAN_LEVEL_INVALID; that should be "r->flags |= WPA_SCAN_QUAL_INVALID;" instead of LEVEL_INVALID. A very low-risk change; we can do a zstream or something if people want that.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Moving to wpa_supplicant since that's where the bug is (see comment 8)
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. http://rhn.redhat.com/errata/RHBA-2012-0978.html