Having the same issue here as well (although I'm on Arch with 3.16 kernel). Interestingly, on the same computer running Mint (3.13 kernel), there is no issue. With 3.16 kernel, RT61PCI works for some minutes, then disconnects, and unable to reconnect again.
Note: both distro's use version 2.3.0 of RT61PCI. dmesg on 3.16 kernel: ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1393744 Title: 1814:0301 RT2x00/rt61pci disconnects since update to 15.04 Status in network-manager package in Ubuntu: Triaged Bug description: lsb_release -rd :Description: Ubuntu Vivid Vervet (development branch) Release: 15.04 wi-fi disconnects and unable to reconnect since updates on 13-11-2014. Also affects Lubuntu 15.04 on same machine. Ubuntu 12.04.1 on same machine does not disconnect. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: network-manager 0.9.8.8-0ubuntu34 ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 Uname: Linux 3.16.0-24-generic i686 ApportVersion: 2.14.7-0ubuntu10 Architecture: i386 CurrentDesktop: XFCE Date: Tue Nov 18 11:12:23 2014 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2014-01-14 (307 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140114) IpRoute: RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH Petersberg d473a136-74dc-4695-aac3-1fffc9cc8095 802-11-wireless 1416308390 Tue 18 Nov 2014 10:59:50 GMT yes no /org/freedesktop/NetworkManager/Settings/2 BTWifi-with-FON a2b63b98-159a-49f4-9247-d46a0d67ed41 802-11-wireless 0 never yes no /org/freedesktop/NetworkManager/Settings/1 Petersberg 1 4fc01379-d340-479e-a016-9af1ab717c83 802-11-wireless 1416303120 Tue 18 Nov 2014 09:32:00 GMT yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH wlan0 802-11-wireless disconnected /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.8.8 disconnected enabled enabled enabled enabled disabled --- ApportVersion: 2.14.7-0ubuntu10 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: peter 1938 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=ffe4c76c-645c-4847-ba8c-b2323517a10f InstallationDate: Installed on 2014-01-14 (318 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140114) MachineType: VIA Technologies, Inc. VT8363 Package: linux (not installed) ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic root=UUID=ed3144cc-8873-40a1-9670-bb2bfc9190a5 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7 RelatedPackageVersions: linux-restricted-modules-3.16.0-25-generic N/A linux-backports-modules-3.16.0-25-generic N/A linux-firmware 1.138 Tags: vivid Uname: Linux 3.16.0-25-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/01/2000 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: 6.00 PG dmi.board.name: 8363-686A dmi.chassis.type: 3 dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvr6.00PG:bd08/01/2000:svnVIATechnologies,Inc.:pnVT8363:pvr:rvn:rn8363-686A:rvr:cvn:ct3:cvr: dmi.product.name: VT8363 dmi.sys.vendor: VIA Technologies, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1393744/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp