dei os dois comandos abaixo se ajudar
??
$ lsusb
paulo@ubuntu:~$ lsusb
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 002: ID 03f0:231d Hewlett-Packard
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 16d5:6502 AnyDATA Corporation CDMA/UMTS/GPRS modem
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 064e:f203 Suyin Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
paulo@ubuntu:~$
$dmesg
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 2.6.38-11-generic (buildd@rothera) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4) ) #48-Ubuntu SMP Fri Jul 29 19:05:14 UTC 2011 (Ubuntu 2.6.38-11.48-generic 2.6.38.
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009e000 (usable)
[ 0.000000] BIOS-e820: 000000000009e000 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 00000000bba61000 (usable)
[ 0.000000] BIOS-e820: 00000000bba61000 - 00000000bbabf000 (reserved)
[ 0.000000] BIOS-e820: 00000000bbabf000 - 00000000bbb82000 (usable)
[ 0.000000] BIOS-e820: 00000000bbb82000 - 00000000bbbbf000 (ACPI NVS)
[ 0.000000] BIOS-e820: 00000000bbbbf000 - 00000000bbbe0000 (usable)
[ 0.000000] BIOS-e820: 00000000bbbe0000 - 00000000bbbf7000 (ACPI data)
[ 0.000000] BIOS-e820: 00000000bbbf7000 - 00000000bbc00000 (usable)
[ 0.000000] BIOS-e820: 00000000bbc00000 - 00000000c0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000f8000000 - 00000000fc000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed10000 - 00000000fed14000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed18000 - 00000000fed1a000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed1c000 - 00000000fed20000 (reserved)
[ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[ 0.000000] BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
[ 0.000000] Notice: NX (Execute Disable) protection cannot be enabled in hardware: non-PAE kernel!
[ 0.000000] NX (Execute Disable) protection: approximated by x86 segment limits
[ 0.000000] DMI 2.6 present.
[ 0.000000] DMI: Hewlett-Packard HP G42 Notebook PC /1484, BIOS F.23 08/04/2010
[ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)
[ 0.000000] last_pfn = 0xbbc00 max_arch_pfn = 0x100000
[ 0.000000] MTRR default type: uncachable
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF uncachable
[ 0.000000] C0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 000000000 mask F80000000 write-back
[ 0.000000] 1 base 080000000 mask FC0000000 write-back
[ 0.000000] 2 base 0FFF00000 mask FFFF00000 write-protect
[ 0.000000] 3 base 0BC000000 mask FFC000000 uncachable
[ 0.000000] 4 base 0BBC00000 mask FFFC00000 uncachable
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] initial memory mapped : 0 - 01c00000
[ 0.000000] init_memory_mapping: 0000000000000000-00000000377fe000
[ 0.000000] 0000000000 - 0000400000 page 4k
[ 0.000000] 0000400000 - 0037400000 page 2M
[ 0.000000] 0037400000 - 00377fe000 page 4k
[ 0.000000] kernel direct mapping tables up to 377fe000 @ 1bfb000-1c00000
[ 0.000000] RAMDISK: 36768000 - 373ac000
[ 0.000000] ACPI: RSDP 000fe020 00024 (v02 HPQOEM)
[ 0.000000] ACPI: XSDT bbbf6120 00064 (v01 HPQOEM SLIC-MPC 00000001 01000013)
[ 0.000000] ACPI: FACP bbbf5000 000F4 (v04 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: DSDT bbbe3000 0D934 (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: FACS bbb8f000 00040
[ 0.000000] ACPI: HPET bbbf4000 00038 (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: APIC bbbf3000 0006C (v02 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: MCFG bbbf2000 0003C (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: ASF! bbbf1000 000A5 (v32 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: SLIC bbbe2000 00176 (v01 HPQOEM SLIC-MPC 06040000 LTP 00000001)
[ 0.000000] ACPI: BOOT bbbe1000 00028 (v01 HPQOEM SLIC-MPC 00000001 MSFT 01000013)
[ 0.000000] ACPI: SSDT bbbe0000 00655 (v01 PmRef CpuPm 00003000 INTL 20060317)
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] 2116MB HIGHMEM available.
[ 0.000000] 887MB LOWMEM available.
[ 0.000000] mapped low ram: 0 - 377fe000
[ 0.000000] low ram: 0 - 377fe000
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0x00000010 -> 0x00001000
[ 0.000000] Normal 0x00001000 -> 0x000377fe
[ 0.000000] HighMem 0x000377fe -> 0x000bbc00
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] early_node_map[5] active PFN ranges
[ 0.000000] 0: 0x00000010 -> 0x0000009e
[ 0.000000] 0: 0x00000100 -> 0x000bba61
[ 0.000000] 0: 0x000bbabf -> 0x000bbb82
[ 0.000000] 0: 0x000bbbbf -> 0x000bbbe0
[ 0.000000] 0: 0x000bbbf7 -> 0x000bbc00
[ 0.000000] On node 0 totalpages: 768732
[ 0.000000] free_area_init_node: node 0, pgdat c1784180, node_mem_map f4ff0200
[ 0.000000] DMA zone: 32 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 3950 pages, LIFO batch:0
[ 0.000000] Normal zone: 1744 pages used for memmap
[ 0.000000] Normal zone: 221486 pages, LIFO batch:31
[ 0.000000] HighMem zone: 4233 pages used for memmap
[ 0.000000] HighMem zone: 537287 pages, LIFO batch:31
[ 0.000000] Using APIC driver default
[ 0.000000] ACPI: PM-Timer IO Port: 0x408
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x00] disabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x00] disabled)
[ 0.000000] ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 4, version 32, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] ACPI: IRQ2 used by override.
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] SMP: Allowing 4 CPUs, 2 hotplug CPUs
[ 0.000000] nr_irqs_gsi: 40
[ 0.000000] PM: Registered nosave memory: 000000000009e000 - 00000000000a0000
[ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e0000
[ 0.000000] PM: Registered nosave memory: 00000000000e0000 - 0000000000100000
[ 0.000000] Allocating PCI resources starting at c0000000 (gap: c0000000:38000000)
[ 0.000000] Booting paravirtualized kernel on bare hardware
[ 0.000000] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:4 nr_node_ids:1
[ 0.000000] PERCPU: Embedded 13 pages/cpu @f4800000 s28800 r0 d24448 u1048576
[ 0.000000] pcpu-alloc: s28800 r0 d24448 u1048576 alloc=1*4194304
[ 0.000000] pcpu-alloc:
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 762723
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=9CEEB8DCEEB8AFBE loop=/ubuntu/disks/root.disk ro quiet splash
tive de cortar pois não enviava o assunto.....