Re: [LAU] thinkpad t61 noise

On Fri, Oct 1, 2010 at 1:56 PM, rosea grammostola
<rosea.grammostola@email-addr-hidden> wrote:
> On Fri, Oct 1, 2010 at 1:30 PM, Dave Phillips <dlphillips@email-addr-hidden> wrote:
>> rosea grammostola wrote:
>>>
>>> My thinkpad t61 makes a high frequency sound, pipipipipippi, not very
>>> loud. Funny thing, when I stick in the usb mouse, it's gone... I only
>>> have this issue when on battery. Suggestions for solution?
>>>
>>>
>>
>>
>> Could be an IRQ conflict. What does 'cat /proc/interrupts' report ?
>>
>> What does lsusb report ?
>>
>> Best,
>>
>> dp
>>
>>
>>
>>
>
> When disabling usb 1, the noise is almost totally gone... That looks better.
>
> # cat /proc/interrupts
>           CPU0       CPU1
>  0:     130819     131607   IO-APIC-edge      timer
>  1:        998       1032   IO-APIC-edge      i8042
>  8:          0          1   IO-APIC-edge      rtc0
>  9:       1198       1232   IO-APIC-fasteoi   acpi
>  12:      53032      52926   IO-APIC-edge      i8042
>  14:       5238       4891   IO-APIC-edge      ata_piix
>  15:         64         60   IO-APIC-edge      ata_piix
>  17:        100        112   IO-APIC-fasteoi   firewire_ohci, HDA Intel
>  19:          0          2   IO-APIC-fasteoi   ehci_hcd:usb2
>  20:         79         84   IO-APIC-fasteoi
>  22:       2915       2545   IO-APIC-fasteoi   ehci_hcd:usb1
>  29:        590        599   PCI-MSI-edge      eth0
>  30:       8114       7995   PCI-MSI-edge      i915
>  31:      20779      20776   PCI-MSI-edge      iwlagn
> NMI:          0          0   Non-maskable interrupts
> LOC:     106919      55400   Local timer interrupts
> SPU:          0          0   Spurious interrupts
> PMI:          0          0   Performance monitoring interrupts
> PND:          0          0   Performance pending work
> RES:       2262       1781   Rescheduling interrupts
> CAL:         14         58   Function call interrupts
> TLB:        719        860   TLB shootdowns
> TRM:          0          0   Thermal event interrupts
> THR:          0          0   Threshold APIC interrupts
> MCE:          0          0   Machine check exceptions
> MCP:          9          9   Machine check polls
> ERR:          1
> MIS:          0
>
>
> # lsusb
> 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
>

In the BIOS all pci devices are set to IRQ 11. Other options are
numbers 1 - 11 or auto or disabled (afaik)
Dunno if that setting is right.

\r
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Received on Fri Oct 1 16:15:02 2010