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Old 08-04-2005, 06:27 PM   #1
nesor
LQ Newbie
 
Registered: Jul 2005
Location: New York City, USA
Distribution: Ubuntu, Slackware
Posts: 23

Rep: Reputation: 15
inconsistent wireless connection


I am having a strange problem with my wireless connection. I am running Ubuntu on my T42 Thinkpad and for the most part, everything has been great. However, fairly regularly, my wireless connection drops, and I cannot seem to get it back without rebooting. I do not experience this problem when I boot the same machine into Win XP, nor does it happen when I use my other, older laptop (also running Ubuntu). I have not had this problem with my T42 at work, or any other location for that matter.
The signal strength is around 90% when I am connected, and out of nowhere I will suddenly lose my connection. iwconfig tells me that I am not associated with the access point. ifconfig tells me that the interface is still up. Attempts to reconnect to my wlan fail; however when I reboot, all is well.
I am using the built in Intel wireless card and a linksys a/b/g router.
Does anyone out there have any ideas?
 
Old 08-04-2005, 09:52 PM   #2
tricky_linux
Member
 
Registered: Jul 2003
Distribution: Red Hat Linux 9.0; Old and Solid
Posts: 674

Rep: Reputation: 30
can u post dmesg after the connection gives up?
there might be some error messages.
 
Old 08-09-2005, 07:04 PM   #3
nesor
LQ Newbie
 
Registered: Jul 2005
Location: New York City, USA
Distribution: Ubuntu, Slackware
Posts: 23

Original Poster
Rep: Reputation: 15
dmesg

Sorry for the delayed response. Here is the output of dmesg from the last time my connection dropped.

Linux version 2.6.10-5-686 (buildd@vernadsky) (gcc version 3.3.5 (Debian 1:3.3.5-8ubuntu2)) #1 Fri Jun 24 17:33:34 UTC 2005
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved)
BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000004ff60000 (usable)
BIOS-e820: 000000004ff60000 - 000000004ff77000 (ACPI data)
BIOS-e820: 000000004ff77000 - 000000004ff79000 (ACPI NVS)
BIOS-e820: 000000004ff80000 - 0000000050000000 (reserved)
BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
383MB HIGHMEM available.
896MB LOWMEM available.
On node 0 totalpages: 327520
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 225280 pages, LIFO batch:16
HighMem zone: 98144 pages, LIFO batch:16
DMI present.
ACPI: RSDP (v002 IBM ) @ 0x000f6df0
ACPI: XSDT (v001 IBM TP-1R 0x00003140 LTP 0x00000000) @ 0x4ff6a6cd
ACPI: FADT (v003 IBM TP-1R 0x00003140 IBM 0x00000001) @ 0x4ff6a800
ACPI: SSDT (v001 IBM TP-1R 0x00003140 MSFT 0x0100000e) @ 0x4ff6a9b4
ACPI: ECDT (v001 IBM TP-1R 0x00003140 IBM 0x00000001) @ 0x4ff76ebc
ACPI: TCPA (v001 IBM TP-1R 0x00003140 PTL 0x00000001) @ 0x4ff76f0e
ACPI: BOOT (v001 IBM TP-1R 0x00003140 LTP 0x00000001) @ 0x4ff76fd8
ACPI: DSDT (v001 IBM TP-1R 0x00003140 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
Built 1 zonelists
Kernel command line: root=/dev/hda2 ro quiet splash
Local APIC disabled by BIOS -- you can enable it with "lapic"
mapped APIC to ffffd000 (01a0c000)
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 599.636 MHz processor.
Using pmtmr for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1290832k/1310080k available (1587k kernel code, 18364k reserved, 714k data, 164k init, 392576k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay loop... 1187.84 BogoMIPS (lpj=593920)
Security Framework v1.0.0 initialized
SELinux: Disabled at boot.
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: After generic identify, caps: afe9f9bf 00000000 00000000 00000000 00000180 00000000
CPU: After vendor identify, caps: afe9f9bf 00000000 00000000 00000000 00000180 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: After all inits, caps: afe9f9bf 00000000 00000000 00000040 00000180 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel(R) Pentium(R) M processor 1.60GHz stepping 06
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
ACPI: Looking for DSDT in initrd... not found!
ACPI: setting ELCR to 0200 (from 0800)
checking if image is initramfs...it isn't (bad gzip magic numbers); looks like an initrd
Freeing initrd memory: 4524k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xfd8d6, last bus=8
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20050211
ACPI: Found ECDT
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: Embedded Controller [EC] (gpe 28)
ACPI: Power Resource [PUBS] (on)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP_._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 13 devices
PnPBIOS: Disabled by ACPI PNP
PCI: Using ACPI for IRQ routing
** PCI interrupts are no longer routed automatically. If this
** causes a device to stop working, it is probably because the
** driver failed to call pci_enable_device(). As a temporary
** workaround, the "pci=routeirq" argument restores the old
** behavior. If this argument makes the device work again,
** please email the output of "lspci" to bjorn.helgaas@hp.com
** so I can fix the driver.
Simple Boot Flag at 0x35 set to 0x1
audit: initializing netlink socket (disabled)
audit(1123274945.499:0): initialized
highmem bounce pool size: 64 pages
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
Initializing Cryptographic API
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 48 ports, IRQ sharing enabled
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI interrupt 0000:00:1f.6[B] -> GSI 11 (level, low) -> IRQ 11
pnp: Device 00:09 activated.
ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
input: AT Translated Set 2 keyboard on isa0060/serio0
NET: Registered protocol family 2
IP: routing cache hash table of 16384 buckets, 128Kbytes
TCP: Hash tables configured (established 524288 bind 65536)
NET: Registered protocol family 8
NET: Registered protocol family 20
Restarting tasks...<6> Strange, kswapd0 not stopped
Strange, kseriod not stopped
done
ACPI wakeup devices:
LID SLPB PCI0 UART PCI1 USB0 USB1 AC9M
ACPI: (supports S0 S3 S4 S5)
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 4524KiB [1 disk] into ram disk... |/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-done.
VFS: Mounted root (cramfs filesystem) readonly.
Freeing unused kernel memory: 164k freed
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3] C4[C3])
ACPI: Processor [CPU] (supports 8 throttling states)
ACPI: Thermal Zone [THM0] (30 C)
NET: Registered protocol family 1
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH4: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 11 (level, low) -> IRQ 11
ICH4: chipset revision 1
ICH4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x1860-0x1867, BIOS settings: hdaMA, hdbio
ide1: BM-DMA at 0x1868-0x186f, BIOS settings: hdcMA, hddio
Probing IDE interface ide0...
hda: TOSHIBA MK4026GAX, ATA DISK drive
elevator: using anticipatory as default io scheduler
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: max request size: 128KiB
hda: 78140160 sectors (40007 MB), CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
/dev/ide/host0/bus0/target0/lun0: p1 p2 p3 < p5 >
Probing IDE interface ide1...
hdc: HL-DT-STCD-RW/DVD DRIVE GCC-4242N, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
Stopping tasks: ==|
Freeing memory... -\|/-done (464 pages freed)
Restarting tasks... done
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
Adding 666656k swap on /dev/hda5. Priority:-1 extents:1
EXT3 FS on hda2, internal journal
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
parport: PnPBIOS parport detected.
parport0: PC-style at 0x3bc, irq 7 [PCSPP,TRISTATE]
lp0: using parport0 (interrupt-driven).
mice: PS/2 mouse device common for all mice
Synaptics Touchpad, model: 1
Firmware: 5.9
Sensor: 44
new absolute packet format
Touchpad has extended capability bits
-> multifinger detection
-> palm detection
-> pass-through port
input: SynPS/2 Synaptics TouchPad on isa0060/serio1
serio: Synaptics pass-through port at isa0060/serio1/input0
ts: Compaq touchscreen protocol output
input: PS/2 Generic Mouse on synaptics-pt/serio0
Non-volatile memory driver v1.2
Capability LSM initialized
device-mapper: 4.3.0-ioctl (2004-09-30) initialised: dm-devel@redhat.com
md: md driver 0.90.1 MAX_MD_DEVS=256, MD_SB_DISKS=27
cdrom: open failed.
input: PC Speaker
Real Time Clock Driver v1.12
inserting floppy driver for 2.6.10-5-686
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
irda_init()
NET: Registered protocol family 23
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel 855PM Chipset.
agpgart: Maximum main memory to use for agp memory: 1185M
agpgart: AGP aperture is 256M @ 0xd0000000
cpci_hotplug: CompactPCI Hot Plug Core version: 0.2
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
shpchp: acpi_shpchprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
shpchp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
shpchp: acpi_shpchprm: Slot sun(1) at s:b:d:f=0x00:02:00:00
shpchp: acpi_shpchprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
shpchp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
shpchp: acpi_shpchprm: Slot sun(2) at s:b:d:f=0x00:02:00:01
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: shpc_init : shpc_cap_offset == 0
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
Evaluate _OSC Set fails. Status = 0x0005
pciehp: add_host_bridge: status 5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(1) at s:b:d:f=0x00:02:00:00
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(2) at s:b:d:f=0x00:02:00:01
pciehp: Fails to gain control of native hot-plug
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v2.2
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 11 (level, low) -> IRQ 11
uhci_hcd 0000:00:1d.0: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 11, io base 0x1800
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 11 (level, low) -> IRQ 11
uhci_hcd 0000:00:1d.1: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 11, io base 0x1820
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 11 (level, low) -> IRQ 11
uhci_hcd 0000:00:1d.2: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: irq 11, io base 0x1840
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 11
ACPI: PCI interrupt 0000:00:1d.7[D] -> GSI 11 (level, low) -> IRQ 11
ehci_hcd 0000:00:1d.7: Intel Corp. 82801DB/DBM (ICH4/ICH4-M) USB 2.0 EHCI Controller
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: irq 11, pci mem 0xc0000000
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 4
PCI: cache line size of 32 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: USB 2.0 initialized, EHCI 1.00, driver 26 Oct 2004
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 6 ports detected
Evaluate _OSC Set fails. Status = 0x0005
pciehp: add_host_bridge: status 5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(1) at s:b:d:f=0x00:02:00:00
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.PCI0.PCI1 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(2) at s:b:d:f=0x00:02:00:01
pciehp: Fails to gain control of native hot-plug
hw_random hardware driver 1.0.0 loaded
ACPI: PCI interrupt 0000:00:1f.5[B] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:1f.5 to 64
intel8x0_measure_ac97_clock: measured 49352 usecs
intel8x0: clocking to 48000
Linux Kernel Card Services
options: [pci] [cardbus] [pm]
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 11 (level, low) -> IRQ 11
Yenta: CardBus bridge found at 0000:02:00.0 [1014:0552]
Yenta: Using INTVAL to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:02:00.0, mfunc 0x01d21b22, devctl 0x64
Yenta: ISA IRQ mask 0x0438, PCI irq 11
Socket status: 30000086
ACPI: PCI interrupt 0000:02:00.1[B] -> GSI 11 (level, low) -> IRQ 11
Yenta: CardBus bridge found at 0000:02:00.1 [1014:0552]
Yenta: Using INTVAL to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:02:00.1, mfunc 0x01d21b22, devctl 0x64
Yenta: ISA IRQ mask 0x0438, PCI irq 11
Socket status: 30000086
Intel(R) PRO/1000 Network Driver - version 5.5.4-k2
Copyright (c) 1999-2004 Intel Corporation.
ACPI: PCI interrupt 0000:02:01.0[A] -> GSI 11 (level, low) -> IRQ 11
e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
ieee80211_crypt: registered algorithm 'NULL'
ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 0.19
ipw2200: Copyright(c) 2003-2004 Intel Corporation
ACPI: PCI interrupt 0000:02:02.0[A] -> GSI 11 (level, low) -> IRQ 11
ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection
ieee80211_crypt: registered algorithm 'WEP'
NET: Registered protocol family 17
 
  


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