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TopFan
May 14th, 2010, 02:13 PM
I'm using Ubuntu 10.04 on my laptop.

When I've finished a session, I just close the lid and the computer suspends. On opening the lid the computer normally finds my wi-fi network quickly and links up fine.

Sometimes, however, I get a red exclamation mark in the wi-fi icon (see image below) and the laptop doesn't try to search for the network for a couple of minutes. It does search eventually, but it is very slow if the red exclamation mark has cropped up.

Is there any way to stop this happening in the first place? If it does happen is there anything I can do to get the computer to start its search for the network?

Any help, much appreciated.

http://i684.photobucket.com/albums/vv208/MacTop/ubuntu-wifi.png

Kobalt
May 14th, 2010, 02:15 PM
Hello,

Please tell us what model is your wifi card ?

TopFan
May 14th, 2010, 02:16 PM
No idea! It's whatever comes in a Dell Insiprion 1525.

I'll try and find out...

TopFan
May 14th, 2010, 02:46 PM
The only thing I can find is in the BIOS. It has a line:

Wifi Device = Intel Wirless

eltonw
May 14th, 2010, 03:00 PM
No idea! It's whatever comes in a Dell Insiprion 1525.

I'll try and find out...

To find out info on hardware open a terminal and type either:
lspci OR lspci -v

I detect that you may be very new to linux, so here are a couple of links that may be useful to you:
http://www.linuxnewbieguide.org/
and http://www.northernjourney.com/opensource/newbies/

HTH...

TopFan
May 14th, 2010, 03:37 PM
It's all Greek to me! But here's what Terminal spits out:

00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
Subsystem: Dell Device 022f
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: agpgart-intel
Kernel modules: intel-agp

00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
Subsystem: Dell Device 022f
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at fea00000 (64-bit, non-prefetchable) [size=1M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at eff8 [size=8]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915

00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
Subsystem: Dell Device 022f
Flags: bus master, fast devsel, latency 0
Memory at feb00000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>

00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 6f20 [size=32]
Kernel driver in use: uhci_hcd

00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at 6f00 [size=32]
Kernel driver in use: uhci_hcd

00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02) (prog-if 20)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 22
Memory at fed1c400 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, fast devsel, latency 0, IRQ 21
Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=09, subordinate=09, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fe800000-fe8fffff
Prefetchable memory behind bridge: 0000000040000000-00000000401fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=0b, subordinate=0b, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: fe700000-fe7fffff
Prefetchable memory behind bridge: 0000000040200000-00000000403fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 02)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=0c, subordinate=0d, sec-latency=0
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: fe400000-fe6fffff
Prefetchable memory behind bridge: 00000000f0000000-00000000f01fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 6f80 [size=32]
Kernel driver in use: uhci_hcd

00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at 6f60 [size=32]
Kernel driver in use: uhci_hcd

00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 22
I/O ports at 6f40 [size=32]
Kernel driver in use: uhci_hcd

00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02) (prog-if 20)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 20
Memory at fed1c000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2) (prog-if 01)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
Memory behind bridge: fe300000-fe3fffff
Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 02)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel modules: iTCO_wdt

00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 02) (prog-if 8a [Master SecP PriP])
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at 01f0 [size=8]
I/O ports at 03f4 [size=1]
I/O ports at 0170 [size=8]
I/O ports at 0374 [size=1]
I/O ports at 6fa0 [size=16]
Kernel driver in use: ata_piix

00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 02) (prog-if 01)
Subsystem: Dell Device 022f
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 28
I/O ports at 6eb0 [size=8]
I/O ports at 6eb8 [size=4]
I/O ports at 6ec0 [size=8]
I/O ports at 6ec8 [size=4]
I/O ports at 6ee0 [size=32]
Memory at fe9fb800 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
Subsystem: Dell Device 022f
Flags: medium devsel, IRQ 10
Memory at fe9fb700 (32-bit, non-prefetchable) [size=256]
I/O ports at 10c0 [size=32]
Kernel modules: i2c-i801

02:09.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05) (prog-if 10)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 64, IRQ 16
Memory at fe3ff800 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ohci1394
Kernel modules: firewire-ohci, ohci1394

02:09.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) (prog-if 01)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 64, IRQ 18
Memory at fe3ff400 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci
Kernel modules: sdhci-pci

02:09.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
Subsystem: Dell Device 022f
Flags: medium devsel, IRQ 5
[virtual] Memory at fe3ff500 (32-bit, non-prefetchable) [disabled] [size=256]
Capabilities: <access denied>
Kernel driver in use: ricoh-mmc
Kernel modules: ricoh_mmc

02:09.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
Subsystem: Dell Device 022f
Flags: bus master, medium devsel, latency 64, IRQ 5
Memory at fe3ff600 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>

02:09.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff) (prog-if ff)
!!! Unknown header type 7f

09:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller (rev 12)
Subsystem: Dell Device 022f
Flags: bus master, fast devsel, latency 0, IRQ 27
Memory at fe8fc000 (64-bit, non-prefetchable) [size=16K]
I/O ports at de00 [size=256]
Capabilities: <access denied>
Kernel driver in use: sky2
Kernel modules: sky2

0b:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
Subsystem: Intel Corporation Device 1021
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at fe7ff000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: iwl3945
Kernel modules: iwl3945

gdou
May 16th, 2010, 07:45 PM
Just disable 802.11 n mode in your route :)