Ubuntu9.10でインターネットに接続できない
https://forums.ubuntulinux.jp/viewtopic.php?id=7529
の、#2のhmatsueさんの投稿を引用しつつ状況を説明します。
hmatsueさんに失礼かもしれません。ごめんなさい。

1. そちらのPCの型式やM/Bの型式、
HP ProLiant ML 110 Generation 5 serverです。
M/Bの型式はわかりませんでした。

2. 使用しているNICの型式(M/Bにオンボードの場合は1で代用)
わかりませんでした。

3. PPPoE機能付きのルーターを介しての接続か、無しでの接続か
4. 下記コマンドの結果を投稿願います。
4.1
コード:

$ ifconfig

eth0      Link encap:イーサネット  ハードウェアアドレス 00:1f:29:d1:5b:dc 
          inet6アドレス: 2408:85:dfff:f63:21f:29ff:fed1:5bdc/64 範囲:グローバル
          inet6アドレス: fe80::21f:29ff:fed1:5bdc/64 範囲:リンク
          UP BROADCAST RUNNING MULTICAST  MTU:1500  メトリック:1
          RXパケット:103 エラー:0 損失:0 オーバラン:0 フレーム:0
          TXパケット:85 エラー:0 損失:0 オーバラン:0 キャリア:0
          衝突(Collisions):0 TXキュー長:1000
          RXバイト:6956 (6.9 KB)  TXバイト:5606 (5.6 KB)
          割り込み:17

lo        Link encap:ローカルループバック 
          inetアドレス:127.0.0.1  マスク:255.0.0.0
          inet6アドレス: ::1/128 範囲:ホスト
          UP LOOPBACK RUNNING  MTU:16436  メトリック:1
          RXパケット:1126 エラー:0 損失:0 オーバラン:0 フレーム:0
          TXパケット:1126 エラー:0 損失:0 オーバラン:0 キャリア:0
          衝突(Collisions):0 TXキュー長:0
          RXバイト:175562 (175.5 KB)  TXバイト:175562 (175.5 KB)

4.2
コード:

$ lshal

linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0'  (string)
  usb.bus_number = 1  (0x1)  (int)
  usb.can_wake_up = false  (bool)
  usb.configuration_value = 1  (0x1)  (int)
  usb.device_class = 0  (0x0)  (int)
  usb.device_protocol = 0  (0x0)  (int)
  usb.device_revision_bcd = 256  (0x100)  (int)
  usb.device_subclass = 0  (0x0)  (int)
  usb.interface.class = 8  (0x8)  (int)
  usb.interface.number = 0  (0x0)  (int)
  usb.interface.protocol = 80  (0x50)  (int)
  usb.interface.subclass = 6  (0x6)  (int)
  usb.is_self_powered = false  (bool)
  usb.linux.device_number = 2  (0x2)  (int)
  usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0'  (string)
  usb.max_power = 98  (0x62)  (int)
  usb.num_configurations = 1  (0x1)  (int)
  usb.num_interfaces = 1  (0x1)  (int)
  usb.num_ports = 0  (0x0)  (int)
  usb.product = 'USB Mass Storage Interface'  (string)
  usb.product_id = 337  (0x151)  (int)
  usb.serial = 'e9c1d7d2fdb4de'  (string)
  usb.speed = 480.0 (480) (double)
  usb.vendor = 'Silicon Integrated Systems Corp.'  (string)
  usb.vendor_id = 1111  (0x457)  (int)
  usb.version = 2.0 (2) (double)

udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0'
  info.capabilities = {'scsi_host'} (string list)
  info.category = 'scsi_host'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0'  (string)
  info.product = 'SCSI Host Adapter'  (string)
  info.subsystem = 'scsi_host'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'scsi_host'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4'  (string)
  scsi_host.host = 4  (0x4)  (int)

udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0'
  info.linux.driver = 'sd'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0'  (string)
  info.product = 'SCSI Device'  (string)
  info.subsystem = 'scsi'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'scsi'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4/target4:0:0/4:0:0:0'  (string)
  scsi.bus = 0  (0x0)  (int)
  scsi.host = 4  (0x4)  (int)
  scsi.lun = 0  (0x0)  (int)
  scsi.model = 'Flash Disk'  (string)
  scsi.target = 0  (0x0)  (int)
  scsi.type = 'disk'  (string)
  scsi.vendor = 'USB 2.0'  (string)

udi = '/org/freedesktop/Hal/devices/storage_serial_USB_2_0_Flash_Disk_e9c1d7d2fdb4de_0_0'
  block.device = '/dev/sdb'  (string)
  block.is_volume = false  (bool)
  block.major = 8  (0x8)  (int)
  block.minor = 16  (0x10)  (int)
  block.storage_device = '/org/freedesktop/Hal/devices/storage_serial_USB_2_0_Flash_Disk_e9c1d7d2fdb4de_0_0'  (string)
  info.addons = {'hald-addon-storage'} (string list)
  info.capabilities = {'storage', 'block'} (string list)
  info.category = 'storage'  (string)
  info.interfaces = {'org.freedesktop.Hal.Device.Storage.Removable'} (string list)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0'  (string)
  info.product = 'Flash Disk'  (string)
  info.udi = '/org/freedesktop/Hal/devices/storage_serial_USB_2_0_Flash_Disk_e9c1d7d2fdb4de_0_0'  (string)
  info.vendor = 'USB 2.0'  (string)
  linux.hotplug_type = 3  (0x3)  (int)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4/target4:0:0/4:0:0:0/block/sdb'  (string)
  storage.automount_enabled_hint = true  (bool)
  storage.bus = 'usb'  (string)
  storage.drive_type = 'disk'  (string)
  storage.firmware_version = '0.00'  (string)
  storage.hotpluggable = true  (bool)
  storage.lun = 0  (0x0)  (int)
  storage.media_check_enabled = true  (bool)
  storage.model = 'Flash Disk'  (string)
  storage.no_partitions_hint = false  (bool)
  storage.originating_device = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0'  (string)
  storage.partitioning_scheme = 'mbr'  (string)
  storage.removable = true  (bool)
  storage.removable.media_available = true  (bool)
  storage.removable.media_size = 262144000  (0xfa00000)  (uint64)
  storage.removable.support_async_notification = false  (bool)
  storage.requires_eject = false  (bool)
  storage.serial = 'USB_2.0_Flash_Disk_e9c1d7d2fdb4de-0:0'  (string)
  storage.size = 0  (0x0)  (uint64)
  storage.vendor = 'USB 2.0'  (string)

udi = '/org/freedesktop/Hal/devices/volume_uuid_3670_628D'
  block.device = '/dev/sdb1'  (string)
  block.is_volume = true  (bool)
  block.major = 8  (0x8)  (int)
  block.minor = 17  (0x11)  (int)
  block.storage_device = '/org/freedesktop/Hal/devices/storage_serial_USB_2_0_Flash_Disk_e9c1d7d2fdb4de_0_0'  (string)
  info.capabilities = {'volume', 'block'} (string list)
  info.category = 'volume'  (string)
  info.interfaces = {'org.freedesktop.Hal.Device.Volume'} (string list)
  info.parent = '/org/freedesktop/Hal/devices/storage_serial_USB_2_0_Flash_Disk_e9c1d7d2fdb4de_0_0'  (string)
  info.product = 'MY USB DISK'  (string)
  info.udi = '/org/freedesktop/Hal/devices/volume_uuid_3670_628D'  (string)
  linux.hotplug_type = 3  (0x3)  (int)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4/target4:0:0/4:0:0:0/block/sdb/sdb1'  (string)
  org.freedesktop.Hal.Device.Volume.method_argnames = {'mount_point fstype extra_options', 'extra_options', 'extra_options'} (string list)
  org.freedesktop.Hal.Device.Volume.method_execpaths = {'hal-storage-mount', 'hal-storage-unmount', 'hal-storage-eject'} (string list)
  org.freedesktop.Hal.Device.Volume.method_names = {'Mount', 'Unmount', 'Eject'} (string list)
  org.freedesktop.Hal.Device.Volume.method_signatures = {'ssas', 'as', 'as'} (string list)
  volume.block_size = 512  (0x200)  (int)
  volume.fstype = 'vfat'  (string)
  volume.fsusage = 'filesystem'  (string)
  volume.fsversion = 'FAT16'  (string)
  volume.ignore = false  (bool)
  volume.is_disc = false  (bool)
  volume.is_mounted = true  (bool)
  volume.is_mounted_read_only = false  (bool)
  volume.is_partition = true  (bool)
  volume.label = 'MY USB DISK'  (string)
  volume.linux.is_device_mapper = false  (bool)
  volume.mount.valid_options = {'ro', 'sync', 'dirsync', 'noatime', 'nodiratime', 'relatime', 'noexec', 'quiet', 'remount', 'exec', 'utf8', 'shortname=', 'codepage=', 'iocharset=', 'umask=', 'dmask=', 'fmask=', 'uid=', 'flush'} (string list)
  volume.mount_point = '/media/MY USB DISK'  (string)
  volume.num_blocks = 511968  (0x7cfe0)  (uint64)
  volume.partition.media_size = 262144000  (0xfa00000)  (uint64)
  volume.partition.number = 1  (0x1)  (int)
  volume.partition.start = 16384  (0x4000)  (uint64)
  volume.size = 262127616  (0xf9fc000)  (uint64)
  volume.unmount.valid_options = {'lazy'} (string list)
  volume.uuid = '3670-628D'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0_scsi_generic'
  info.capabilities = {'scsi_generic'} (string list)
  info.category = 'scsi_generic'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0'  (string)
  info.product = 'SCSI Generic Interface'  (string)
  info.subsystem = 'scsi_generic'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host_0_scsi_device_lun0_scsi_generic'  (string)
  linux.device_file = '/dev/sg2'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'scsi_generic'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2'  (string)
  scsi_generic.device = '/dev/sg2'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host'
  info.capabilities = {'scsi_host'} (string list)
  info.category = 'scsi_host'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0'  (string)
  info.product = 'SCSI Host Adapter'  (string)
  info.subsystem = 'scsi_host'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_457_151_e9c1d7d2fdb4de_if0_scsi_host'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'scsi_host'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/host4/scsi_host/host4'  (string)
  scsi_host.host = 4  (0x4)  (int)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_2_0000_00_1a_7_if0'
  info.linux.driver = 'hub'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1d6b_2_0000_00_1a_7'  (string)
  info.product = 'USB Hub Interface'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_2_0000_00_1a_7_if0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-0:1.0'  (string)
  usb.bus_number = 1  (0x1)  (int)
  usb.can_wake_up = true  (bool)
  usb.configuration_value = 1  (0x1)  (int)
  usb.device_class = 9  (0x9)  (int)
  usb.device_protocol = 0  (0x0)  (int)
  usb.device_revision_bcd = 518  (0x206)  (int)
  usb.device_subclass = 0  (0x0)  (int)
  usb.interface.class = 9  (0x9)  (int)
  usb.interface.number = 0  (0x0)  (int)
  usb.interface.protocol = 0  (0x0)  (int)
  usb.interface.subclass = 0  (0x0)  (int)
  usb.is_self_powered = true  (bool)
  usb.linux.device_number = 1  (0x1)  (int)
  usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-0:1.0'  (string)
  usb.max_power = 0  (0x0)  (int)
  usb.num_configurations = 1  (0x1)  (int)
  usb.num_interfaces = 1  (0x1)  (int)
  usb.num_ports = 6  (0x6)  (int)
  usb.product = 'USB Hub Interface'  (string)
  usb.product_id = 2  (0x2)  (int)
  usb.serial = '0000:00:1a.7'  (string)
  usb.speed = 480.0 (480) (double)
  usb.vendor = 'Linux Foundation'  (string)
  usb.vendor_id = 7531  (0x1d6b)  (int)
  usb.version = 2.0 (2) (double)

udi = '/org/freedesktop/Hal/devices/pci_8086_2939'
  info.linux.driver = 'uhci_hcd'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = '82801I (ICH9 Family) USB UHCI Controller #6'  (string)
  info.subsystem = 'pci'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_8086_2939'  (string)
  info.vendor = 'Intel Corporation'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'pci'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2'  (string)
  pci.device_class = 12  (0xc)  (int)
  pci.device_protocol = 0  (0x0)  (int)
  pci.device_subclass = 3  (0x3)  (int)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2'  (string)
  pci.product = '82801I (ICH9 Family) USB UHCI Controller #6'  (string)
  pci.product_id = 10553  (0x2939)  (int)
  pci.subsys_product_id = 12788  (0x31f4)  (int)
  pci.subsys_vendor = 'Hewlett-Packard Company'  (string)
  pci.subsys_vendor_id = 4156  (0x103c)  (int)
  pci.vendor = 'Intel Corporation'  (string)
  pci.vendor_id = 32902  (0x8086)  (int)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_2'
  info.linux.driver = 'usb'  (string)
  info.parent = '/org/freedesktop/Hal/devices/pci_8086_2939'  (string)
  info.product = '1.1 root hub'  (string)
  info.subsystem = 'usb_device'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_2'  (string)
  info.vendor = 'Linux Foundation'  (string)
  linux.device_file = '/dev/bus/usb/005/001'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2/usb5'  (string)
  usb_device.bus_number = 5  (0x5)  (int)
  usb_device.can_wake_up = true  (bool)
  usb_device.configuration_value = 1  (0x1)  (int)
  usb_device.device_class = 9  (0x9)  (int)
  usb_device.device_protocol = 0  (0x0)  (int)
  usb_device.device_revision_bcd = 518  (0x206)  (int)
  usb_device.device_subclass = 0  (0x0)  (int)
  usb_device.is_self_powered = true  (bool)
  usb_device.linux.device_number = 1  (0x1)  (int)
  usb_device.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2/usb5'  (string)
  usb_device.max_power = 0  (0x0)  (int)
  usb_device.num_configurations = 1  (0x1)  (int)
  usb_device.num_interfaces = 1  (0x1)  (int)
  usb_device.num_ports = 2  (0x2)  (int)
  usb_device.product = '1.1 root hub'  (string)
  usb_device.product_id = 1  (0x1)  (int)
  usb_device.serial = '0000:00:1a.2'  (string)
  usb_device.speed = 12.0 (12) (double)
  usb_device.vendor = 'Linux Foundation'  (string)
  usb_device.vendor_id = 7531  (0x1d6b)  (int)
  usb_device.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_2_if0'
  info.linux.driver = 'hub'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_2'  (string)
  info.product = 'USB Hub Interface'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_2_if0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2/usb5/5-0:1.0'  (string)
  usb.bus_number = 5  (0x5)  (int)
  usb.can_wake_up = true  (bool)
  usb.configuration_value = 1  (0x1)  (int)
  usb.device_class = 9  (0x9)  (int)
  usb.device_protocol = 0  (0x0)  (int)
  usb.device_revision_bcd = 518  (0x206)  (int)
  usb.device_subclass = 0  (0x0)  (int)
  usb.interface.class = 9  (0x9)  (int)
  usb.interface.number = 0  (0x0)  (int)
  usb.interface.protocol = 0  (0x0)  (int)
  usb.interface.subclass = 0  (0x0)  (int)
  usb.is_self_powered = true  (bool)
  usb.linux.device_number = 1  (0x1)  (int)
  usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.2/usb5/5-0:1.0'  (string)
  usb.max_power = 0  (0x0)  (int)
  usb.num_configurations = 1  (0x1)  (int)
  usb.num_interfaces = 1  (0x1)  (int)
  usb.num_ports = 2  (0x2)  (int)
  usb.product = 'USB Hub Interface'  (string)
  usb.product_id = 1  (0x1)  (int)
  usb.serial = '0000:00:1a.2'  (string)
  usb.speed = 12.0 (12) (double)
  usb.vendor = 'Linux Foundation'  (string)
  usb.vendor_id = 7531  (0x1d6b)  (int)
  usb.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/pci_8086_2938'
  info.linux.driver = 'uhci_hcd'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = '82801I (ICH9 Family) USB UHCI Controller #5'  (string)
  info.subsystem = 'pci'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_8086_2938'  (string)
  info.vendor = 'Intel Corporation'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'pci'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1'  (string)
  pci.device_class = 12  (0xc)  (int)
  pci.device_protocol = 0  (0x0)  (int)
  pci.device_subclass = 3  (0x3)  (int)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1'  (string)
  pci.product = '82801I (ICH9 Family) USB UHCI Controller #5'  (string)
  pci.product_id = 10552  (0x2938)  (int)
  pci.subsys_product_id = 12788  (0x31f4)  (int)
  pci.subsys_vendor = 'Hewlett-Packard Company'  (string)
  pci.subsys_vendor_id = 4156  (0x103c)  (int)
  pci.vendor = 'Intel Corporation'  (string)
  pci.vendor_id = 32902  (0x8086)  (int)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_1'
  info.linux.driver = 'usb'  (string)
  info.parent = '/org/freedesktop/Hal/devices/pci_8086_2938'  (string)
  info.product = '1.1 root hub'  (string)
  info.subsystem = 'usb_device'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_1'  (string)
  info.vendor = 'Linux Foundation'  (string)
  linux.device_file = '/dev/bus/usb/004/001'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1/usb4'  (string)
  usb_device.bus_number = 4  (0x4)  (int)
  usb_device.can_wake_up = true  (bool)
  usb_device.configuration_value = 1  (0x1)  (int)
  usb_device.device_class = 9  (0x9)  (int)
  usb_device.device_protocol = 0  (0x0)  (int)
  usb_device.device_revision_bcd = 518  (0x206)  (int)
  usb_device.device_subclass = 0  (0x0)  (int)
  usb_device.is_self_powered = true  (bool)
  usb_device.linux.device_number = 1  (0x1)  (int)
  usb_device.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1/usb4'  (string)
  usb_device.max_power = 0  (0x0)  (int)
  usb_device.num_configurations = 1  (0x1)  (int)
  usb_device.num_interfaces = 1  (0x1)  (int)
  usb_device.num_ports = 2  (0x2)  (int)
  usb_device.product = '1.1 root hub'  (string)
  usb_device.product_id = 1  (0x1)  (int)
  usb_device.serial = '0000:00:1a.1'  (string)
  usb_device.speed = 12.0 (12) (double)
  usb_device.vendor = 'Linux Foundation'  (string)
  usb_device.vendor_id = 7531  (0x1d6b)  (int)
  usb_device.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_1_if0'
  info.linux.driver = 'hub'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_1'  (string)
  info.product = 'USB Hub Interface'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_1_if0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1/usb4/4-0:1.0'  (string)
  usb.bus_number = 4  (0x4)  (int)
  usb.can_wake_up = true  (bool)
  usb.configuration_value = 1  (0x1)  (int)
  usb.device_class = 9  (0x9)  (int)
  usb.device_protocol = 0  (0x0)  (int)
  usb.device_revision_bcd = 518  (0x206)  (int)
  usb.device_subclass = 0  (0x0)  (int)
  usb.interface.class = 9  (0x9)  (int)
  usb.interface.number = 0  (0x0)  (int)
  usb.interface.protocol = 0  (0x0)  (int)
  usb.interface.subclass = 0  (0x0)  (int)
  usb.is_self_powered = true  (bool)
  usb.linux.device_number = 1  (0x1)  (int)
  usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.1/usb4/4-0:1.0'  (string)
  usb.max_power = 0  (0x0)  (int)
  usb.num_configurations = 1  (0x1)  (int)
  usb.num_interfaces = 1  (0x1)  (int)
  usb.num_ports = 2  (0x2)  (int)
  usb.product = 'USB Hub Interface'  (string)
  usb.product_id = 1  (0x1)  (int)
  usb.serial = '0000:00:1a.1'  (string)
  usb.speed = 12.0 (12) (double)
  usb.vendor = 'Linux Foundation'  (string)
  usb.vendor_id = 7531  (0x1d6b)  (int)
  usb.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/pci_8086_2937'
  info.linux.driver = 'uhci_hcd'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = '82801I (ICH9 Family) USB UHCI Controller #4'  (string)
  info.subsystem = 'pci'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_8086_2937'  (string)
  info.vendor = 'Intel Corporation'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'pci'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0'  (string)
  pci.device_class = 12  (0xc)  (int)
  pci.device_protocol = 0  (0x0)  (int)
  pci.device_subclass = 3  (0x3)  (int)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0'  (string)
  pci.product = '82801I (ICH9 Family) USB UHCI Controller #4'  (string)
  pci.product_id = 10551  (0x2937)  (int)
  pci.subsys_product_id = 12788  (0x31f4)  (int)
  pci.subsys_vendor = 'Hewlett-Packard Company'  (string)
  pci.subsys_vendor_id = 4156  (0x103c)  (int)
  pci.vendor = 'Intel Corporation'  (string)
  pci.vendor_id = 32902  (0x8086)  (int)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_0'
  info.linux.driver = 'usb'  (string)
  info.parent = '/org/freedesktop/Hal/devices/pci_8086_2937'  (string)
  info.product = '1.1 root hub'  (string)
  info.subsystem = 'usb_device'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_0'  (string)
  info.vendor = 'Linux Foundation'  (string)
  linux.device_file = '/dev/bus/usb/003/001'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0/usb3'  (string)
  usb_device.bus_number = 3  (0x3)  (int)
  usb_device.can_wake_up = true  (bool)
  usb_device.configuration_value = 1  (0x1)  (int)
  usb_device.device_class = 9  (0x9)  (int)
  usb_device.device_protocol = 0  (0x0)  (int)
  usb_device.device_revision_bcd = 518  (0x206)  (int)
  usb_device.device_subclass = 0  (0x0)  (int)
  usb_device.is_self_powered = true  (bool)
  usb_device.linux.device_number = 1  (0x1)  (int)
  usb_device.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0/usb3'  (string)
  usb_device.max_power = 0  (0x0)  (int)
  usb_device.num_configurations = 1  (0x1)  (int)
  usb_device.num_interfaces = 1  (0x1)  (int)
  usb_device.num_ports = 2  (0x2)  (int)
  usb_device.product = '1.1 root hub'  (string)
  usb_device.product_id = 1  (0x1)  (int)
  usb_device.serial = '0000:00:1a.0'  (string)
  usb_device.speed = 12.0 (12) (double)
  usb_device.vendor = 'Linux Foundation'  (string)
  usb_device.vendor_id = 7531  (0x1d6b)  (int)
  usb_device.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_0_if0'
  info.linux.driver = 'hub'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_0'  (string)
  info.product = 'USB Hub Interface'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1a_0_if0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-0:1.0'  (string)
  usb.bus_number = 3  (0x3)  (int)
  usb.can_wake_up = true  (bool)
  usb.configuration_value = 1  (0x1)  (int)
  usb.device_class = 9  (0x9)  (int)
  usb.device_protocol = 0  (0x0)  (int)
  usb.device_revision_bcd = 518  (0x206)  (int)
  usb.device_subclass = 0  (0x0)  (int)
  usb.interface.class = 9  (0x9)  (int)
  usb.interface.number = 0  (0x0)  (int)
  usb.interface.protocol = 0  (0x0)  (int)
  usb.interface.subclass = 0  (0x0)  (int)
  usb.is_self_powered = true  (bool)
  usb.linux.device_number = 1  (0x1)  (int)
  usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-0:1.0'  (string)
  usb.max_power = 0  (0x0)  (int)
  usb.num_configurations = 1  (0x1)  (int)
  usb.num_interfaces = 1  (0x1)  (int)
  usb.num_ports = 2  (0x2)  (int)
  usb.product = 'USB Hub Interface'  (string)
  usb.product_id = 1  (0x1)  (int)
  usb.serial = '0000:00:1a.0'  (string)
  usb.speed = 12.0 (12) (double)
  usb.vendor = 'Linux Foundation'  (string)
  usb.vendor_id = 7531  (0x1d6b)  (int)
  usb.version = 1.1 (1.1) (double)

udi = '/org/freedesktop/Hal/devices/pci_8086_29f1'
  info.linux.driver = 'pcieport'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = '3200/3210 Chipset Host-Primary PCI Express Bridge'  (string)
  info.subsystem = 'pci'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_8086_29f1'  (string)
  info.vendor = 'Intel Corporation'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'pci'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:01.0'  (string)
  pci.device_class = 6  (0x6)  (int)
  pci.device_protocol = 0  (0x0)  (int)
  pci.device_subclass = 4  (0x4)  (int)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:01.0'  (string)
  pci.product = '3200/3210 Chipset Host-Primary PCI Express Bridge'  (string)
  pci.product_id = 10737  (0x29f1)  (int)
  pci.subsys_product_id = 0  (0x0)  (int)
  pci.subsys_vendor_id = 0  (0x0)  (int)
  pci.vendor = 'Intel Corporation'  (string)
  pci.vendor_id = 32902  (0x8086)  (int)

udi = '/org/freedesktop/Hal/devices/pci_8086_29f0'
  info.linux.driver = 'i3200_edac'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = '3200/3210 Chipset DRAM Controller'  (string)
  info.subsystem = 'pci'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_8086_29f0'  (string)
  info.vendor = 'Intel Corporation'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'pci'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:00.0'  (string)
  pci.device_class = 6  (0x6)  (int)
  pci.device_protocol = 0  (0x0)  (int)
  pci.device_subclass = 0  (0x0)  (int)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:00.0'  (string)
  pci.product = '3200/3210 Chipset DRAM Controller'  (string)
  pci.product_id = 10736  (0x29f0)  (int)
  pci.subsys_product_id = 12787  (0x31f3)  (int)
  pci.subsys_vendor = 'Hewlett-Packard Company'  (string)
  pci.subsys_vendor_id = 4156  (0x103c)  (int)
  pci.vendor = 'Intel Corporation'  (string)
  pci.vendor_id = 32902  (0x8086)  (int)


Dumped 89 device(s) from the Global Device List.
------------------------------------------------

4.2は最初のほうがどうしても表示されませんでした。

4.3
コード:

$ lspci -v

00:00.0 Host bridge: Intel Corporation 3200/3210 Chipset DRAM Controller (rev 01)
    Subsystem: Hewlett-Packard Company Device 31f3
    Flags: bus master, fast devsel, latency 0
    Capabilities: <access denied>
    Kernel driver in use: i3200_edac
    Kernel modules: i3200_edac

00:01.0 PCI bridge: Intel Corporation 3200/3210 Chipset Host-Primary PCI Express Bridge (rev 01)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 16
    I/O ports at 1820 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 17
    I/O ports at 1840 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 18
    I/O ports at 1860 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) (prog-if 20)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 18
    Memory at ec000000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci_hcd

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
    I/O behind bridge: 00002000-00002fff
    Memory behind bridge: 20000000-201fffff
    Prefetchable memory behind bridge: 0000000020200000-00000000203fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: ec100000-ecffffff
    Prefetchable memory behind bridge: 00000000ee000000-00000000eeffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0
    I/O behind bridge: 00004000-00004fff
    Memory behind bridge: ed000000-ed0fffff
    Prefetchable memory behind bridge: 0000000020400000-00000000205fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 16
    I/O ports at 1880 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 17
    I/O ports at 18a0 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 18
    I/O ports at 18c0 [size=32]
    Capabilities: <access denied>
    Kernel driver in use: uhci_hcd

00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) (prog-if 20)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0, IRQ 16
    Memory at ec000400 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) (prog-if 01)
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=11, subordinate=11, sec-latency=32
    Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, medium devsel, latency 0
    Capabilities: <access denied>
    Kernel modules: iTCO_wdt

00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA IDE Controller (rev 02) (prog-if 8a [Master SecP PriP])
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 17
    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 1c10 [size=16]
    I/O ports at 1c00 [size=16]
    Capabilities: <access denied>
    Kernel driver in use: ata_piix

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: medium devsel, IRQ 10
    Memory at ec000800 (64-bit, non-prefetchable) [disabled] [size=256]
    I/O ports at 18e0 [size=32]
    Kernel modules: i2c-i801

00:1f.5 IDE interface: Intel Corporation 82801I (ICH9 Family) 2 port SATA IDE Controller (rev 02) (prog-if 85 [Master SecO PriO])
    Subsystem: Hewlett-Packard Company Device 31f4
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 18
    I/O ports at 1c68 [size=8]
    I/O ports at 1c5c [size=4]
    I/O ports at 1c60 [size=8]
    I/O ports at 1c58 [size=4]
    I/O ports at 1c30 [size=16]
    I/O ports at 1c20 [size=16]
    Capabilities: <access denied>
    Kernel driver in use: ata_piix

0d:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot] ServerEngines (SEP1) (rev 02)
    Subsystem: Hewlett-Packard Company Device 31fa
    Flags: bus master, fast devsel, latency 0, IRQ 5
    Memory at ee000000 (32-bit, prefetchable) [size=16M]
    Memory at ec100000 (32-bit, non-prefetchable) [size=16K]
    Memory at ec800000 (32-bit, non-prefetchable) [size=8M]
    [virtual] Expansion ROM at ec110000 [disabled] [size=64K]
    Capabilities: <access denied>

0e:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express
    Subsystem: Hewlett-Packard Company Device 7051
    Flags: bus master, fast devsel, latency 0, IRQ 28
    Memory at ed000000 (64-bit, non-prefetchable) [size=64K]
    Expansion ROM at <ignored> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: tg3
    Kernel modules: tg3

2年ほど前にこのマシンを購入し、Ubuntu8.04をインストールしました。
が、当時の環境では接続できず
（そのときに質問に答えてくださったかた、ありがとうございました）、
最近自宅に光を導入したのでLANケーブルを買ってNTT Web Caster V110につないでみました。
けれど結果が芳しくないので10.04LTSを上書きインストールしました。
右上に上下それぞれの方向を向いた2本の矢印が出てeth0接続中というような表示が出たのですが
ウェブブラウザでウェブにまったくアクセスができません。
それが昨日のことでした。
きょう起動してみたら2本の矢印さえ消えていました。そんな状況下にあります。

試したことはpppoeconfです。
それもうまくいきませんでした。

実現したい目標はインターネットに接続すること、
フリーのゲームをダウンロードして遊ぶことです。

支離滅裂ですみません、
どなたかご教授くださればさいわいです。