After installation of i386 version (32-bit), wifi disconnects after the system has been running for five or more minutes. Tried upgrading from version 14.10 and could not when selecting wifi and connecting. Upgrade would hang. Also happens in KDE 15.04.
The wifi has been working perfectly with previous versions. System is an HP Pavilion with 2 GB of memory. Also have 15.04 running on 64-bit laptop with no connection problems to same cable router.
Tried downloading and installing different or newer copies of i386 15.04 with the same results.
*-network:0
description: Ethernet interface
product: RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 2
bus info: pci@0000:03:02.0
logical name: eth0
version: 10
serial: 00:17:31:e0:88:5a
size: 10Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 multicast=yes port=MII speed=10Mbit/s
resources: irq:21 ioport:cc00(size=256) memory:fdeff000-fdeff0ff
*-network:1
description: Wireless interface
product: RT2561/RT61 802.11g PCI
vendor: Ralink corp.
physical id: 3
bus info: pci@0000:03:03.0
logical name: wlan0
version: 00
serial: 00:25:9c:6e:f1:dd
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt61pci driverversion=3.19.0-15-generic firmware=0.8 ip=192.168.0.11 latency=64 link=yes multicast=yes wireless=IEEE 802.11bg
resources: irq:16 memory:fdef0000-fdef7fff
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux david-a1534x-desktop 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:01 UTC 2015 i686 i686 i686 GNU/Linux
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
While obtaining this info, the wifi remained connected and working. If it fails once again, will rerun the info check.
Continues to disconnect on Ubuntu/Kubuntu 15.04. It appears that something was dropped or changed to support for RALINK series of WIFI interfaces. There was never a problem in prior versions. When installing KDE 15.04, have to not enable WIFI or it does not install.
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