Non working kernel:
$ sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 03
serial: 6c:62:6d:09:98:b9
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom
ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd
autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168d-1.fw latency=0
link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:46 ioport:d800(size=256) memory:fbdff000-fbdfffff
memory:f6ffc000-f6ffffff memory:fbdc0000-fbddffff
*-network DISABLED
description: Wireless interface
product: RT3090 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 00
serial: 70:f1:a1:f5:58:b5
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical
wireless
configuration: broadcast=yes driver=rt2800pci
driverversion=3.5.0-22-generic firmware=0.34 latency=0 link=no multicast=yes
wireless=IEEE 802.11bgn
resources: irq:17 memory:fbff0000-fbffffff
$
Working kernel:
$ sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 03
serial: 6c:62:6d:09:98:b9
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom
ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd
autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168d-1.fw latency=0
link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:46 ioport:d800(size=256) memory:fbdff000-fbdfffff
memory:f6ffc000-f6ffffff memory:fbdc0000-fbddffff
*-network
description: Wireless interface
product: RT3090 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 00
serial: 70:f1:a1:f5:58:b5
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical
wireless
configuration: broadcast=yes driver=rt2800pci
driverversion=3.5.0-21-generic firmware=0.34 ip=192.168.0.105 latency=0
link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:fbff0000-fbffffff
$
There is no hardware switch to turn on/off the WiFi radio, it is on all
the time, even when the interface fails in Ubuntu.
Here is what a get when i fails:
$ dmesg | grep phy0
[ 32.273242] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 32.273429] Registered led device: rt2800pci-phy0::radio
[ 32.273441] Registered led device: rt2800pci-phy0::assoc
[ 32.273453] Registered led device: rt2800pci-phy0::quality
[ 33.893963] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 35.491277] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 35.491305] phy0 -> rt2800pci_set_device_state: Error - Device failed to enter
state 4 (-5).
[ 37.108494] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 38.705893] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 38.705899] phy0 -> rt2800pci_set_device_state: Error - Device failed to enter
state 4 (-5).
[ 40.319252] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 41.916519] phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy
[0x00000068].
[ 41.916525] phy0 -> rt2800pci_set_device_state: Error - Device failed to enter
state 4 (-5).
$
Here when it works:
$ dmesg | grep phy0
[ 31.549359] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 31.549545] Registered led device: rt2800pci-phy0::radio
[ 31.549567] Registered led device: rt2800pci-phy0::assoc
[ 31.549585] Registered led device: rt2800pci-phy0::quality
[ 50.243408] cfg80211: Found new beacon on frequency: 2472 MHz (Ch 13) on phy0
$
I'v been trying out some scenarios and concluded that the WiFi interface fails
every time a switch from kernel 3.5.0-22-generic
to 3.5.0-21-generic AND vice versa. The only way I have found, so far, to get
the WiFi working again is to boot into Windows 7 and then reboot into Ubuntu,
this works all the time irrespective of the Linus kernel version.
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https://bugs.launchpad.net/bugs/1129975
Title:
RT3090 Wireless don't get activated when switching kernel version.
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