[SOLVED] Ubuntu 10.04 LTS in laptop Acer Aspire 5750G does not see wired internet

igor1102828 · 09-19-2011, 04:46 PM

Laptop has two-boot system, Windows 7 and Ubuntu 10.04 LTS. I before installing 10.04 I tried Ubuntu 11.04 from CD, it did not work at all (screen was black), so I've installed 10.04. The installation went smoothly. However, internet is NOT achievable under Ubuntu, while works without problem under Windows 7. I'd appreciate suggestions how to force the laptop to discover the internet wire.
The results of

Code:

lshw 
 *-network UNCLAIMED
       description: Ethernet controller
       product: NetLink BCM57785 Gigabit Ethernet PCIe
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 10
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:d1830000-d183ffff(prefetchable) memory:d1840000-d184ffff(prefetchable) memory:d1850000-d18507ff(prefetchable)
  *-network UNCLAIMED
       description: Network controller
       product: Broadcom Corporation
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:d1a00000-d1a03fff

and the result of

Code:

lspci

00:00.0 Host bridge: Intel Corporation Device 0104 (rev 09)
00:01.0 PCI bridge: Intel Corporation Sandy Bridge PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Device 0116 (rev 09)
00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04)
00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b4)
00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b4)
00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Device 1c49 (rev 04)
00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 04)
01:00.0 VGA compatible controller: nVidia Corporation Device 0df4 (rev a1)
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57785 Gigabit Ethernet PCIe (rev 10)
02:00.1 SD Host controller: Broadcom Corporation Device 16bc (rev 10)
02:00.2 System peripheral: Broadcom Corporation Device 16be (rev 10)
02:00.3 System peripheral: Broadcom Corporation Device 16bf (rev 10)
03:00.0 Network controller: Broadcom Corporation Device 4358
05:00.0 USB Controller: NEC Corporation Device 0194 (rev 04)

etech3 · 09-19-2011, 07:02 PM

You do not say if you are using DHCP or not.

What about ifconfig ethX (where X is you number ie 0,1)

Is the card "up"?

Have you checked your networking config file?

Your dns config file?

igor1102828 · 09-20-2011, 04:41 PM

Quote:

Originally Posted by etech3

You do not say if you are using DHCP or not.

What about ifconfig ethX (where X is you number ie 0,1)

Is the card "up"?

Have you checked your networking config file?

Your dns config file?

1) Yes; I use DHCP
2) It looks like the card is not seen,
ifconfig eth0 (eth1) ---> device not found (However, under Win 7 the connection to Internet works perfectly!)
ifconfig:

Code:

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:76 errors:0 dropped:0 overruns:0 frame:0
          TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5840 (5.8 KB)  TX bytes:5840 (5.8 KB)

3) networking config

Code:

# networking - configure virtual network devices
#
# This task causes virtual network devices that do not have an associated
# kernel object to be started on boot.

description	"configure virtual network devices"

start on (local-filesystems
	  and stopped udevtrigger)

task

pre-start exec mkdir -p /var/run/network

exec ifup -a

4) I did not find the dns config file
5) Should I add something into network-interface.conf file?

Code:

# network-interface - configure network device
#
# This service causes network devices to be brought up or down as a result
# of hardware being added or removed, including that which isn't ordinarily
# removable.

description	"configure network device"

start on net-device-added
stop on net-device-removed INTERFACE=$INTERFACE

instance $INTERFACE
export INTERFACE

pre-start script
    if [ "$INTERFACE" = lo ]; then
	# bring this up even if /etc/network/interfaces is broken
	ifconfig lo 127.0.0.1 up || true
	initctl emit -n net-device-up \
	    IFACE=lo LOGICAL=lo ADDRFAM=inet METHOD=loopback || true
    fi
    mkdir -p /var/run/network
    exec ifup --allow auto $INTERFACE
end script

post-stop exec ifdown --allow auto $INTERFACE

I have no idea how to force this Acer Aspire 5750G to see the card...

etech3 · 09-25-2011, 04:59 AM

Just because it worked in M$ does not mean anything.

It appears that you are using a Broadcom Corporation Device. There may be a driver issue as Broadcom devices use proprietary firmware.

try:

Code:

lspci | grep -i wireless

Take a look at:
http://linuxwireless.org/en/users/

igor1102828 · 10-07-2011, 09:45 AM

Quote:

Originally Posted by etech3

Just because it worked in M$ does not mean anything.

It appears that you are using a Broadcom Corporation Device. There may be a driver issue as Broadcom devices use proprietary firmware.

try:

Code:

lspci | grep -i wireless

Take a look at:
http://linuxwireless.org/en/users/

Thanks! The problem for WIRED connection is solved by installation of the driver tg3-3.110g.
Note: in my case this code did not show anything,so, it is more helpful just to go through whole lspci-list and seek for Network controller. In my case it was
Broadcom Corporation device, so, I went to their site.