Same problem: 100% CPU usage by iwlagn
kernel : 2.6.31-14-generic
Ubuntu 9.10 - le Koala Karmique
lspci:
------------------------------------------------------------
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory
Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated
Graphics Controller (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1
(rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2
(rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3
(rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4
(rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5
(rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6
(rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller
(rev 03)
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA IDE
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
02:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN
[Kedron] Network Connection (rev 61)
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI
Express Gigabit Ethernet controller (rev 01)
0c:07.0 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader
Controller
0c:07.1 SD Host controller: ENE Technology Inc ENE PCI SmartMedia / xD Card
Reader Controller
0c:07.3 FLASH memory: ENE Technology Inc ENE PCI Secure Digital / MMC Card
Reader Controller
0c:09.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306 Fire II IEEE 1394
OHCI Link Layer Controller (rev c0)
--------------------------------------
dmesg | grep iwlagn
----------------------------------
5.921172] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27k
[ 5.921175] iwlagn: Copyright(c) 2003-2009 Intel Corporation
[ 5.921254] iwlagn 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 5.921263] iwlagn 0000:02:00.0: setting latency timer to 64
[ 5.921286] iwlagn 0000:02:00.0: Detected Intel Wireless WiFi Link 4965AGN
REV=0x4
[ 5.965405] iwlagn 0000:02:00.0: Tunable channels: 13 802.11bg, 19 802.11a
channels
[ 5.965488] iwlagn 0000:02:00.0: irq 32 for MSI/MSI-X
[ 21.381169] iwlagn 0000:02:00.0: firmware: requesting iwlwifi-4965-2.ucode
[ 21.711947] iwlagn 0000:02:00.0: loaded firmware version 228.61.2.24
[ 594.308484] iwlagn 0000:02:00.0: Microcode SW error detected. Restarting
0x82000000.
[ 833.153986] iwlagn 0000:02:00.0: Microcode SW error detected. Restarting
0x82000000.
[ 833.189362] iwlagn 0000:02:00.0: No space for Tx
[ 833.189367] iwlagn 0000:02:00.0: Error sending SENSITIVITY_CMD: enqueue_hcmd
failed: -28
[ 833.189369] iwlagn 0000:02:00.0: SENSITIVITY_CMD failed
[ 1506.977809] iwlagn 0000:02:00.0: Microcode SW error detected. Restarting
0x82000000.
[ 2481.433517] iwlagn 0000:02:00.0: Microcode SW error detected. Restarting
0x82000000.
[ 2481.456201] iwlagn 0000:02:00.0: No space for Tx
[ 2481.456206] iwlagn 0000:02:00.0: Error sending SENSITIVITY_CMD: enqueue_hcmd
failed: -28
[ 2481.456209] iwlagn 0000:02:00.0: SENSITIVITY_CMD failed
-------------------------------------------------------------------------------------------------------
--
iwlagn creates cpu hog
https://bugs.launchpad.net/bugs/404575
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